EP1406041B1 - Security device for puncturable cartridge - Google Patents

Security device for puncturable cartridge Download PDF

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Publication number
EP1406041B1
EP1406041B1 EP03292433A EP03292433A EP1406041B1 EP 1406041 B1 EP1406041 B1 EP 1406041B1 EP 03292433 A EP03292433 A EP 03292433A EP 03292433 A EP03292433 A EP 03292433A EP 1406041 B1 EP1406041 B1 EP 1406041B1
Authority
EP
European Patent Office
Prior art keywords
strip
cartridge
disposable
pressurised fluid
cartridge according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP03292433A
Other languages
German (de)
French (fr)
Other versions
EP1406041A2 (en
EP1406041A3 (en
Inventor
Daniel Bouvier
Yves Guillou
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PLEIN AIR INTERNATIONAL
Guilbert Express
Original Assignee
Guilbert Express
Plein Air International
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=31985426&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1406041(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Guilbert Express, Plein Air International filed Critical Guilbert Express
Publication of EP1406041A2 publication Critical patent/EP1406041A2/en
Publication of EP1406041A3 publication Critical patent/EP1406041A3/en
Application granted granted Critical
Publication of EP1406041B1 publication Critical patent/EP1406041B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/12—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C3/00—Vessels not under pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0114—Shape cylindrical with interiorly curved end-piece
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/058—Size portable (<30 l)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0636—Metals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0311—Closure means
    • F17C2205/032—Closure means pierceable
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0335—Check-valves or non-return valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/035—Propane butane, e.g. LPG, GPL
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/03—Dealing with losses
    • F17C2260/035—Dealing with losses of fluid
    • F17C2260/036—Avoiding leaks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/07—Applications for household use
    • F17C2270/0709—Camping gas

Definitions

  • the invention applies to the field of pressurized fluid cartridges, in particular perforable cartridges for pressurized fluid.
  • the applications of these pierceable cartridges are multiple. These cartridges are particularly adapted to be used for stoves, more generally for portable apparatus-type camping devices.
  • the FR 1 433 490 proposes flow limiting devices for pierceable cartridges. These devices are intended to limit the flow that escapes from a perforated cartridge to prevent the formation of dangerous flame due to too much fluid flow, and to keep the fluid under pressure remaining in the cartridge for further use of the cartridge.
  • the invention overcomes this problem.
  • a disposable pressurized fluid cartridge includes a bottom, a peripheral side wall and an upper wall having a pierceable portion, and provided internally with a safety device adapted to oppose the escape of the pressurized fluid after perforation, that is to say, to remove or limit the escape of this fluid.
  • the safety device comprises a resiliently flexible support piece bearing a seal, said support piece having at least two support points spaced apart from each other to bear against at least one inner wall and to exert a restoring force sealingly applying the seal against the upper wall, around said pierceable part, said support piece being able to move apart under the action of a thrust member introduced through said pierceable part to separate the seal from the upper wall.
  • the support piece comprises a blade.
  • the seal is a seal overmolded on the blade, the upper part of the seal, adapted to be applied against the upper wall, revealing a region of the upper face of the blade.
  • the blade comprises a boss on which is placed the overmolded seal, the upper part of the seal revealing the upper face of the blade in the region of the bump.
  • the upper portion of the seal comprises a ring having at least one end in sealing contact with the upper wall.
  • the blade comprises a cup on its own upper face to receive the seal which has a toric configuration.
  • the cup has a seat adapted to receive the O-ring and a concentric central well and of greater depth than the seat.
  • the support piece is made of plastic.
  • the support piece is metal.
  • the blade comprises at each end complementary fastening means of depressions made opposite in the peripheral lateral wall of the cartridge and at a distance from the bottom of the cartridge, these depressions being made without protruding to the outside of the cartridge and these attachment means being adapted to cooperate with these depressions to define said support points.
  • the blade comprises at each end complementary fastening means of depressions made opposite in the peripheral lateral wall of the cartridge and at a distance from the bottom of the cartridge, these depressions being made protruding to the outside of the cartridge and these attachment means being adapted to cooperate with these depressions to define said support points.
  • the distance between the attachment means is greater than the distance between the corresponding depressions so that the blade is bent to exert said restoring force during the cooperation of the means of attachment. hangs with the depressions.
  • the blade comprises at least two symmetrical branches on either side of the seal.
  • Each branch of the blade is bent on both sides of a point of inflection and comprises a raised end adapted to cooperate with a recess formed at least partly in the peripheral side wall of the cartridge and at a distance from the bottom of the the cartridge to define said support points, each depression being made without projecting outwardly of the cartridge.
  • the distance between the raised ends is equal to or greater than the distance between the corresponding depressions so that the blade is bent to exert said restoring force during the cooperation of the raised ends with the depressions.
  • the blade includes a curved generally U-shaped portion springing.
  • the blade comprises two symmetrical branches on either side of the seal, each branch of the blade being folded so as to follow at least partly the internal shape of the cartridge to the bottom, the end of each branch of the blade being adapted to rest on the bottom of the cartridge and forming one of said support points.
  • each blade leg includes a generally U-shaped bent portion springing.
  • each folded portion is followed by a hinge connecting the folded portion to a portion extending toward the bottom of the cartridge.
  • the blade comprises a ring connecting the ends of the branches of the blade.
  • the blade comprises at least one bar of length such that and positioned so that its ends touch the peripheral lateral wall of the cartridge and are fit to slide along this wall under the action of the organ thrust on the blade.
  • the blade comprises a bar of length such that and positioned so that the ends touch the upper wall and are fit to slide along this wall under the action of the thrust member on the blade.
  • the blade comprises two symmetrical branches on either side of the seal, each part of the blade being corrugated folded and terminating at one end, each end being adapted to be screwed in. screw in at least one groove, made by a fold of the upper wall of the cartridge, to form one of said points of support.
  • each branch of the blade is bent dovetail and both ends are adapted to fit into the same annular groove surrounding the pierceable portion.
  • the blade comprises two symmetrical branches on either side of the seal, each limb of the blade being corrugated folded and terminating at one end, each end being adapted to be secured to the upper wall of the cartridge to form one of said support points.
  • each branch of the blade is bent in the general U-shape and both ends of the blade are welded to the top wall of the cartridge.
  • a resiliently flexible blade bearing a seal said blade having at least two support points spaced apart from one another allowing it to exert an elastic restoring force on the seal.
  • the blade comprises three branches starting from the joint in the form of a star.
  • the seal is placed in the vicinity of a first end of the blade.
  • the blade is folded so as to follow the internal shape of the cartridge to the bottom, the blade having a first fold adapted to bear on a first zone of the bottom and forming the first point of support and a second fold proper to rely on a second zone of the bottom and forming the second fulcrum, the first and second zones being opposite to the center of the bottom of the cartridge.
  • the support piece is a support base comprising a holding base forming a clean base to bear against the bottom of the cartridge, at least two branches of a blade extending from the holding base and joining a central boss supporting the seal, each leg being secured to the holding base.
  • At least two flexible blades integral with the holding base extend towards and around the central boss and come into contact around the pierceable portion of the cartridge.
  • the invention also relates to a security device adapted to form part of a previously presented cartridge, comprising a resiliently flexible support piece bearing a seal, said support piece having at least two support points distant from one another. allowing to exert an elastic restoring force on the joint.
  • the figure 1 represents a perforable cartridge 1 known from the state of the art and having a symmetry of revolution about the Y axis.
  • This cartridge comprises a stamped part consisting of a cylindrical side wall 5 and a convex upper wall 3 convex towards the outside of the cartridge.
  • the domed top wall is provided at its top and centrally with a recessed portion 10 convex towards the inside of the cartridge, this recessed portion being shaped spherical cap.
  • This recessed portion 10 is adapted to be pierced at its center so as to form an orifice through which the pressurized fluid of the cartridge can escape.
  • the cylindrical portion 5 of the cartridge is closed at its base by a convex bottom 7 inwardly.
  • This form of perforable cartridge is particularly suitable for containing a fluid under pressure.
  • the pressurized fluid contained in the cartridge is a combustible gas.
  • the central zone of the recessed portion 10, where the perforation is made, is also called perforable part 11.
  • FIGS. 2 to 5 illustrate a safety device according to a first embodiment of the invention, the figure 6 representing the blade of the safety device according to this embodiment.
  • the safety device 12 comprises a blade 15 of elongated rectangular shape with two main faces (an upper face and a lower face) comprising along its length a generally U-shaped folded part, more precisely in the form of a V in the example of the Figures 2 to 6 .
  • the blade 15 is provided symmetrically at each end of attachment means comprising tabs separated from each other by notches opening at the end of the blade. These tabs comprise a central tab 16 bent at least partly perpendicularly to the blade 15 and surrounded on both sides of tabs 19 unfolded.
  • the blade 15 is provided in its middle with a molded seal 14 of generally cylindrical shape which completely surrounds the cross section of the blade so as to be secured to the blade.
  • the seal comprises an upper portion on the side of the upper face of the blade and a lower portion on the side of the underside of the blade.
  • the axis of revolution of the overmolded seal is perpendicular to the upper and lower faces of the blade.
  • the upper portion of the overmolded seal 14 is recessed in its center at 24 so as to reveal a region of the upper face of the blade 15.
  • the upper part of the overmolded seal 14 forms a ring 13 surrounding the recess 24.
  • FIGS. 20 to 24 are in section the recessed portion 10 of the cartridge and the ring 13 of the upper portion of the overmolded seal 14 bears against the upper part of the cartridge.
  • the circular end 17-1 of the ring 13 is sealingly abutting around the perforable portion 11 against the recessed portion 10 of the cartridge.
  • the circular end 17-1 of the ring 13 is sealingly abutting around the pierceable portion 11, against the wall of the cartridge surrounding the recessed portion 10.
  • the ring 13 has at its end a circular shoulder defining two circular ends 17-4 and 17-5, each sealingly against the recessed portion 10 of the cartridge. These two circular ends form a double seal around the perforable part 11.
  • the two ends 17-4 and 17-5 respectively bear against the recessed portion 10 of the cartridge and against the wall of the cartridge surrounding the recessed portion 10.
  • the ring 13 has at its end a circular groove surrounded by two circular ends 17-2 and 17-3, each respectively sealingly against the recessed portion 10 of the cartridge and against the wall of the cartridge surrounding the recessed portion 10. These two ends form a double seal around the perforable part 11.
  • the blade 15 comprises a domed generally cylindrical portion 20 also called bump.
  • This curved portion can be advantageously carried out by embossing or stamping.
  • the seal 14 is overmolded so as to be held fixed in translation on the blade.
  • the seal consists only of an upper portion overmolded on the curved portion 20 of the blade as shown in FIGS. figures 11 and 12 , the upper part being hollowed in its center of to reveal a region of the upper face of the blade.
  • the seal consists only of an overmolded upper portion 74 on a full boss 22 of the blade.
  • Said overmolded upper portion 74 is recessed in its center and thus has a ring so as to reveal the upper surface of the boss (or boss) corresponding to a region of the upper face of the blade.
  • the base of the overmolded upper portion 74 has a certain thickness so as to have a large contact surface with the side faces of the boss and the upper face of the blade.
  • the full hump 22 can be made in a variety of ways including those presented on the Figures 17, 18 and 19 . So, the figure 17 represents a sectional hump whose side faces 23 have a right angle with the upper face of the blade.
  • the figure 18 represents a boss 22 in section whose side faces 23 are inclined relative to the upper face of the blade.
  • the figure 19 represents a boss 22 in section whose side faces 23 have a shoulder.
  • the crown of the seal can be made according to the variants of embodiment of Figures 20 to 23 for example only.
  • the recessed portion 24 of the overmolded seal 14 reveals the upper face of the blade in the region of the convex portion 20.
  • the lower portion of the seal covering the underside of the blade has a substantially constant thickness and therefore has a concave portion 28 next to the concave part of the blade.
  • the blade On the upper face of the blade, the blade carries a cup 30 placed in the middle. This cup can be fixed to the blade by welding or by any other method. This cup 30 is of a depth adequate to receive an O-ring 32.
  • the cup has a seat 33 having a certain depth to receive the O-ring and a concentric central well 35 of greater depth than the seat 33.
  • the blade 15 of the safety device 12 is elastically flexible. It can be made of metal, for example for the realization of Figures 2 to 5 .
  • the blade 15 of the safety device 12 can also be made of plastic.
  • the figure 8 illustrates the security device once set up inside a cartridge.
  • the device is introduced and put in place inside the cartridge before the closure of the cartridge, which is carried out by assembling the bottom with the stamped part of the cartridge.
  • the security device 12 once set up as shown on the figure 8 corresponds to the safety device 12 of the Figures 2 to 5 , the safety device according to the realization of the figure 7 can be placed in the same way on a cartridge before assembly of the bottom with the stamped part.
  • the safety device 12 is placed inside the stamped part so that the blade follows the shape of the convex upper wall 3 of the cartridge 1.
  • the ring 13 of the seal is applied against the convex upper wall and around the perforable portion 11 to provide a seal after removal of a member having perforated the perforable portion.
  • the cartridge comprises, to receive each end of the blade, depressions made preferably opposite in the side wall of the cartridge and at a distance from the bottom of the cartridge, these depressions being advantageously formed without projecting towards the outside of the cartridge. .
  • two recesses 34 form inward protrusions on which the unfolded tabs 19 rest respectively, the projections being spaced apart from each other so as to leave a space between them for the folded tab 16. This folded tab bears against the internal side wall of the cartridge between the two recesses.
  • the pairs of recesses are made symmetrically with respect to the pierceable portion of the cartridge.
  • the pairs of depressions are more particularly diametrically opposed.
  • the attachment means of each end are complementary to the recesses 34 made in the side wall of the cartridge.
  • the attachment means cooperate with the positioning means that are the depressions so that the blade has two points of support against at least one inner wall of the cartridge.
  • the distance between the attachment means is greater than the distance between the corresponding recesses 34, symmetrically positioned in the cartridge.
  • the blade 15 must be bent so as to follow the curvature of the curved upper wall 3 and to exert said restoring force during the cooperation of the attachment means with the depressions.
  • the overmolded seal 24 is then applied against the convex upper wall 3 around the pierceable portion 11.
  • the blade is placed in the cartridge so as to have a point of support at each of its ends and so as to exert a force which tends to press the seal against the convex upper wall 3.
  • the blade is placed in the cartridge so that the region of the upper face of the blade released by the recessed portion 24 of the overmolded seal is opposite the pierceable portion 11 of the cartridge.
  • the cartridge is then filled with fluid under pressure and the bottom is fixed on the stamped part of the cartridge for example by crimping.
  • the tip when the cartridge is perforated by a tip in the zone 11 in the center of the portion 10, the tip is pressed against the region of the upper face of the blade left exposed.
  • the force exerted by the tip being greater than the restoring force of the blade which tends to press the seal against the curved upper wall, the seal is pushed from this wall.
  • the tip must maintain the force exerted on the safety device so as to release the pressurized fluid from the cartridge.
  • the blade pushes the seal against the curved upper wall 3 by means of a restoring force.
  • This safety device serves as a closing means when the perforated cartridge is removed from the device to which it is connected.
  • the figure 9 illustrates a cartridge provided with a safety device according to a third embodiment.
  • This safety device 40 comprises a blade 41 carrying a generally cylindrical seal 44 molded in the vicinity of an end 42 of the blade 41.
  • the upper part of this seal 44 is recessed at its center to form a ring 49 and revealing a region of the upper face of the blade 41.
  • the crown of the seal 44 is applied to the rounded upper wall 3 around the pierceable portion 11 so that the region of the upper face of the blade left exposed is placed in a screw With respect to the perforable portion 11.
  • the blade 41 is folded so as to follow the internal shape of the convex upper wall 3 and then of the lateral wall 5 of the cartridge to the convex bottom 7 of the cartridge opposite to the curved upper wall, (or more precisely to the perforable part).
  • the blade 41 has a first fold supported on a first zone of the convex bottom 7 of the cartridge and forming a first fulcrum.
  • the blade 41 then follows the convex shape of the bottom of the cartridge before presenting a second fold 48 resting on a second zone of the bottom of the cartridge and forming a second fulcrum.
  • the first and second areas of the bottom of the cartridge are opposite to the center of the bottom of the cartridge.
  • the end 42 of the blade 41 tends to press the seal against the convex upper wall 3 of the cartridge thus exerting a restoring force.
  • the security device 40 operates in the same manner as before.
  • a tip can push the seal of the domed upper wall 3 by exerting an opposite force and greater than the restoring force of the blade on the region of the upper face of the blade left exposed.
  • the return force of the blade tends to push the seal against the curved upper wall.
  • the figure 10 illustrates a cartridge provided with a safety device according to a fourth embodiment.
  • the blade is folded symmetrically, the seal 44 is overmolded in the middle. From this seal 44, one of the two symmetrical branches of the blade is described below.
  • This blade branch is folded so as to follow the internal shape of the cartridge until bottom 7 opposite the curved upper wall, the end 58 of the branch of the blade being adapted to rest on the bottom 7 of the cartridge to form a fulcrum.
  • the end 58 is advantageously folded to follow the shape of the bottom 7 of the cartridge.
  • this blade branch comprises facing the wall 3 a folded portion generally U-shaped so as to act as a spring.
  • the other blade branch is symmetrical with the blade branch that has been described.
  • the symmetry of the safety device 50 gives stability to the safety device 50, the generally U-shaped symmetrical folded portions 54 and 56 are arranged on either side of the seal 44 so as to act as a spring. These folded parts are facing the curved upper wall 3. As in the previous device, the blade 51 exerts a restoring force which tends to press the seal against the convex upper wall 3 and around the perforable portion 11.
  • the safety devices illustrated in a variant comprise a blade carrying a seal that can be made according to one of the variants presented above.
  • the blade is placed in the cartridge so as to have a point of support at each of its ends and so as to exert a force which tends to press the seal against the convex upper wall 3.
  • the blade is placed in the cartridge so that the region of the upper face of the blade released by the recessed portion of the overmolded seal is opposite the pierceable portion 11 of the cartridge.
  • the Figures 11 to 13 present alternative embodiments of the safety device of the figure 8 once set up inside a cartridge.
  • the cartridge comprises, to receive each end of the blade, recesses made in opposite preferably and in an inner wall, at the limit of the upper wall and the side wall of the cartridge and at a distance from the bottom of the cartridge, these depressions being advantageously formed without projecting towards the outside of the cartridge.
  • Each depression 63 forms an inwardly projecting boss on which a raised end 65 of the safety device blade is supported.
  • the depressions are made symmetrically with respect to the pierceable portion of the cartridge. For a cylindrical side wall of the cartridge, the depressions are more particularly diametrically opposed.
  • the blade 61 has a molded seal 64 at its center having an axis of symmetry W.
  • the blade 61 comprises at least two branches 66 symmetrical with respect to the axis W on either side of the overmolded seal 64.
  • Each branch 66 of the blade has a double curvature. In other words, each branch 66 of the blade is flexed on either side of an inflection point (z and z ').
  • each branch of the blade first follows the upper wall 3 of the cartridge and then, after the point of inflection, each branch of the blade is bent, more particularly straightened, so that its raised end 65 can abut against the depression 63 (or boss) made in the peripheral side wall 5 of the cartridge and at a distance from the bottom 7 of the cartridge.
  • the cartridge comprises a lower peripheral side wall 5-1 and an upper peripheral side wall 5-2, the outside diameter ⁇ ext of the lower peripheral side wall 5-1 being smaller than the outside diameter of the side wall upper device 5-2.
  • the cartridge can be formed in the upper peripheral side wall 5-2 of the recesses 73 projecting outwardly from the cartridge without these depressions protruding beyond the largest of the outer diameters ( ⁇ ext). In this way, the standards of size of a cartridge are respected.
  • the figure 13 shows the realization of a first and a second recess pair opposite to respectively receive the first and the second end of the blade.
  • the blade 71 comprises at each end complementary attachment means of the recesses 73 made opposite in the peripheral side wall 5 of the cartridge and at a distance from the bottom 7 of the cartridge. These attachment means are two lugs made at each end of the blade.
  • the tabs 75 are inserted into the depressions to define the support points of the device.
  • the distance between the pairs of legs of each end of the blade is greater than the distance between the corresponding depressions 73.
  • the blade 71 must be bent to exert a restoring force. on the joint during the cooperation of the legs 75 with the depressions 73.
  • the Figures 14 and 15 present alternative embodiments of the safety device once set up inside a cartridge.
  • the convex upper wall of the cartridge comprises an elevated area relative to the remainder of the upper wall, this raised area surrounding and including the pierceable portion 11.
  • the broken line represents the level of the domed upper wall of the cartridge in the previous embodiments . So as to keep a height requirement identical to the previous embodiments, the curved upper wall of the cartridge is lowered, only the raised area retains the height of the domed top wall of previous embodiments.
  • the raised zone is preferably circular and is connected to the remainder of the upper wall by a fold of the upper wall forming an annular groove 82 of horizontal general direction inside the cartridge.
  • the raised area may be of any other shape and be connected to the remainder of the upper wall by one or more grooves or vertical walls comprising depressions.
  • the blade 81 carries an overmolded seal 44 for example.
  • the blade comprises two symmetrical branches 84 on either side of the seal.
  • Each branch 84 of the blade is corrugated and ends with a folded end 83.
  • each branch 84 of the blade is folded into a dovetail so that once the safety device 80 is placed in the cartridge, the seal 44 is located mainly above the dovetailed folded branches.
  • Each branch 84 ends with a complementary folded end of the annular groove and adapted to be inserted into the annular groove 82 to form one of the support points.
  • the figure 15 another embodiment of a safety device 90.
  • This embodiment provides a blade 91 carrying an overmolded seal 44.
  • the blade 91 comprises two symmetrical branches 94 on either side of the seal. Each branch of the blade is corrugated folded and ends with an end 92. Each end is secured to the upper wall 3 of the cartridge to form one of the support points.
  • each portion 94 of the blade is generally U-shaped.
  • both ends 92 of the blade are welded to the upper wall 3 of the cartridge to form a support.
  • the Figures 25 to 27 show an alternative embodiment of the safety device alone and once set up inside a cartridge.
  • the blade is folded symmetrically and has a solid boss 22 receiving the seal 74 overmolded on the upper face of the blade and adapted to form a sealed contact around the pierceable portion 11 of the cartridge.
  • the blade is folded on a portion 101 in the form of U inverted and is folded symmetrically to form two rounded 102 generally U-shaped overturned.
  • the parts 102 serve to ensure a spring role of the blade.
  • Each branch of the blade is folded so as to follow at least part of the internal shape of the cartridge to the bottom.
  • the blade portions 102 are connected to portions 104 by a hinge 110.
  • the portions 104 have ends 106 folded toward the interior of the device and adapted to abut the bottom 7 of the cartridge so as to each form a point support.
  • the hinges 110 allow the portions 104 of the blade to be unfolded only to the outside of the device in the open position. These hinges 110 allow the blade to have a small footprint in case of storage before use in a perforable cartridge.
  • parts 104 comprising ends 106 folded towards the outside of the device.
  • the hinges 110 only allow the portions 104 of the blade to be folded inwardly of the device in the closed position.
  • the blade variants described above may have hinges 110 as shown.
  • an alternative embodiment consists of a blade comprising at least three blade branches interconnected at the joint, the blade having the shape of a star.
  • Each end of the three branches cooperates with the side wall of the cartridge in the same manner as one of the ends of the blade of the previous embodiments.
  • Each part of the branches of the blade is folded so as to follow at least partly the internal shape of the cartridge to the bottom.
  • FIG. 28 to 30 An exemplary embodiment of a star-shaped blade is given to Figures 28 to 30 .
  • a plate 115 in the form of a triangle comprises the full boss 22.
  • Each branch is connected to the common plate 115, a branch having a portion 111 of connection to the plate 115, then a portion 112 in the form of an inverted rounded U ending by a portion 114 bearing on the bottom 7 of the cartridge.
  • the blade is used as a spring means for exerting a restoring force sealingly applying the seal against the top wall of the cartridge.
  • the Figures 31 and 32 have a device comprising a blade symmetrically folded into two branches.
  • the blade comprises a plate 120 carrying a full boss 22 on which the overmolded seal 74 comes. From the common plate 120 is connected a portion 121, to which is connected a portion 122 in the form of an inverted rounded U ending in a part 124 bearing on the bottom 7 of the cartridge.
  • the blade symmetrically presents the same parts from the common tray.
  • the blade comprises a ring 125 connecting the symmetrical portions 124 at their base. This ring 125 is able to come into contact with the bottom 7 of the cartridge and allows the device to be centered in the cartridge.
  • the Figures 33 to 36 present a device similar to the device of the Figures 31 and 32 , the same references designate elements in common.
  • Plan AA will designate the plan of figure 33 in which the symmetrical parts of the blade extend.
  • the device comprises two bars 130 and 132 parallel to each other and each positioned between a portion 121 and a portion 122 of a branch of the blade. Each bar extends in a plane perpendicular to the plane AA. These two bars are of such length that once the device in place in the cartridge, the ends of these bars touch the side wall 5 of the cartridge and are fit to slide along this side wall.
  • these bars serve as lateral guides to the device when a force exerted by a tip pushes the seal of the pierceable portion 11 of the cartridge and when the device pushes the seal against the pierceable portion by exerting a restoring force.
  • the Figures 37 to 40 present a device similar to the device of the Figures 33 to 36 , the same references designate elements in common.
  • the device of Figures 37 to 40 does not have two bars but a bar 134 positioned against the plate 120 on the underside of the blade.
  • the bar extends in a plane perpendicular to the plane AA. This bar is of such length that once the device is in place in the cartridge, the ends of this bar touch the upper wall 3 of the cartridge and are able to slide along the lateral parts of this upper wall 3 to laterally guide the device in a similar way to that of the bars of Figures 34 to 37 .
  • the blade can be made for example of metal or plastic.
  • the Figures 41 to 43 describe a first embodiment of a support base.
  • the support base PS1 comprises a holding base 157 consisting of a base ring 148 adapted to come into contact with the bottom 7 of the cartridge, side uprights 159 that can be inclined towards the inside of the base as shown in FIGS. Figures 41 to 43 and an upper ring 158.
  • the lateral uprights extend from the base ring 148 to the upper ring 158.
  • Three branches 140, 141, 142 of a blade extend in undulating form from the holding base 157 to a central boss 146 supporting the seal (not shown), each leg being integral with the holding base, more particularly the upper ring 158, the branches joining the central boss 146. More specifically, the three branches are join in a cylinder 144 supporting the central boss 146.
  • the seal is clean to come into sealing contact around the pierceable portion 11 of the cartridge.
  • the undulating shape of the branches allows the latter to be elastically flexible and to exert a restoring force sealingly applying the seal against the upper wall of the cartridge, the central boss bearing the seal being thus clean to move away under the action of a thrust member introduced through the pierceable part to separate the seal from the upper wall 3.
  • Flexible blades 150, 151, 152 are integral with the holding base, more particularly the upper ring 158, and extend towards the central boss 146. The curved free ends of the flexible blades come into contact against the upper wall 3 around the pierceable portion 11 of the cartridge and thus surround the seal.
  • Each blade 150, 151, 152 is interposed between two branches.
  • the flexible blades 150, 151, 152 are supported by respective reinforcements 154 inside the holding base 157, these reinforcements extending from the upper ring 148 to the free curved ends of the flexible blades 150, 151, 152 .
  • the lateral uprights 159 are of the same width as the branches 140, 141, 142 and the blades 150, 151, 152 and are placed in the extension thereof.
  • the Figures 44 to 46 describe a second embodiment of a support base.
  • the PS2 support base comprises a holding base 167 consisting of a base ring 168 adapted to come into contact with the bottom 7 of the cartridge, side uprights 189 that can be inclined towards the inside of the base as shown in FIGS. Figures 44 to 46 and an upper ring 188.
  • the lateral uprights extend from the base ring 168 to the upper ring 188.
  • Three branches 160, 161, 162 of a blade extend from the holding base 167 until in a central boss 166 supporting the seal (not shown), each branch being secured to the holding base, and more particularly to the upper ring 188.
  • the three branches are in the form of angular sectors whose vertices are located on the central boss 166.
  • the three branches meet in a circular plate 164 supporting the central boss 166.
  • the seal is able to come into sealing contact around the pierceable portion 11 of the cartridge.
  • the undulating shape of the branches allows the latter to be elastically flexible and to exert a restoring force sealingly applying the seal against the upper wall of the cartridge, the central boss bearing the seal being thus clean to move away under the action of a thrust member introduced through the pierceable part to separate the seal from the upper wall 3.
  • Flexible blades 180, 181, 182 are integral with the holding base, more particularly the upper ring 188, and extend towards the central boss 166. Their curved free end comes into contact against the upper wall 3 around the pierceable portion 11 of the cartridge and thus surround the seal.
  • Each flexible blade 180, 181, 182 is interposed between two branches.
  • the flexible blades 180, 181, 182 are supported by respective reinforcements 184 inside the holding base 167, these reinforcements extending from the upper ring 188 to the curved free ends of the flexible blades 180, 181, 182.
  • the base ring has a diameter such that it comes into contact against the peripheral side wall 5 of the cartridge and thus serves as a centering ring of the device in the cartridge.
  • the Figures 47 and 48 describe a third embodiment of a support base.
  • the PS3 support base comprises a holding base 197 consisting of a base ring 208 adapted to come into contact with the bottom 7 of the cartridge, lateral uprights 199 that can be inclined outwards of the base as shown in FIGS. Figures 47 and 48 and an upper ring 188.
  • the upper ring is adapted to come into contact with the peripheral side wall 5 of the cartridge as shown in FIG. figure 48 and thus serves as a centering ring of the device in the cartridge.
  • the lateral uprights extend from the base ring 208 to the upper ring 198.
  • Three branches 190, 191, 192 of a blade extend from the holding base 197 to a central boss 196 supporting the seal (Not shown), each branch being integral with the holding base, more particularly the base ring 208.
  • the three branches meet in a cylinder 194 supporting the central boss 196.
  • the seal is clean to come into contact sealed around the pierceable portion 11 of the cartridge.
  • the undulating shape of the branches allows the latter to be elastically flexible and to exert a restoring force sealingly applying the seal against the upper wall of the cartridge, the central boss bearing the seal being thus clean to move away under the action of a thrust member introduced through the pierceable portion to separate the seal of the upper wall.
  • the safety device comprises a support piece which is the generic term for a blade or a support base (PS1, PS2 and PS3) also comprising a blade.
  • a "support piece” therefore designates a clean part to carry the seal and to bear against the inner surface of the cartridge.
  • support piece designates only one part, or a combination of fixed parts between them before and after mounting the device in the cartridge.
  • the described joint variants can be combined with the described support part variants.
  • the blade can bear against the curved upper wall
  • the recesses can be made for example at the base of the curved upper wall.
  • the invention covers all combinations of joints and support pieces presented by way of example in the description so as to provide a safety device according to the invention.
  • the invention also covers forms of support parts different from those presented but providing the same spring function to the safety device, that is to say the same function of exercising a restoring force on the seal.

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Abstract

A flexible elastic member (41) which may be made from metal or plastic has folds (46,48) which rest on the concave base (7) of the canister. The member is also in contact with a side wall and carries a crown type safety joint (44) at the upper end (42). The safety joint presses against the inner portion of the canister top (11) which is designed to be perforated in use

Description

L'invention s'applique au domaine des cartouches de fluide sous pression, notamment des cartouches perforables pour fluide sous pression. Les applications de ces cartouches perforables sont multiples. Ces cartouches sont particulièrement adaptées pour être utilisées pour des réchauds, plus généralement pour des appareils portatifs de type appareil de camping.The invention applies to the field of pressurized fluid cartridges, in particular perforable cartridges for pressurized fluid. The applications of these pierceable cartridges are multiple. These cartridges are particularly adapted to be used for stoves, more generally for portable apparatus-type camping devices.

Ces cartouches sont raccordées à un appareil comportant une pointe qui perfore la cartouche. Une fois perforée, la cartouche de fluide sous pression dans sa version de base doit rester raccordée à l'appareil, sinon celle-ci se vide. Ce type de cartouche est à usage unique puisqu'elle ne comporte pas de moyen de fermeture. Ceci peut s'avérer dangereux si le fluide qui s'échappe vient au contact d'une flamme par exemple.These cartridges are connected to a device with a tip that pierces the cartridge. Once perforated, the fluid cartridge under pressure in its basic version must remain connected to the device, otherwise it will empty. This type of cartridge is disposable since it has no means of closure. This can be dangerous if the fluid that escapes comes into contact with a flame, for example.

Le brevet FR 1 433 490 propose des dispositifs limiteurs de débit pour des cartouches perforables. Ces dispositifs ont pour but de limiter le débit qui s'échappe d'une cartouche perforée afin d'éviter la formation de flamme dangereuse due à un trop fort débit de fluide, et de permettre de conserver le fluide sous pression restant dans la cartouche pour une utilisation ultérieure de la cartouche.The FR 1 433 490 proposes flow limiting devices for pierceable cartridges. These devices are intended to limit the flow that escapes from a perforated cartridge to prevent the formation of dangerous flame due to too much fluid flow, and to keep the fluid under pressure remaining in the cartridge for further use of the cartridge.

Toutefois, ces dispositifs nécessitent le soudage ou le sertissage de pièces de manière étanche à l'intérieur de la cartouche, ce qui augmente notablement son coût.However, these devices require welding or crimping of parts tightly inside the cartridge, which significantly increases its cost.

L'invention vient remédier à ce problème.The invention overcomes this problem.

L'invention concerne une cartouche de fluide sous pression jetable comprenant un fond, une paroi latérale périphérique et une paroi supérieure comportant une partie perforable, et munie intérieurement d'un dispositif de sécurité propre à s'opposer à l'échappement du fluide sous pression après perforation, c'est-à-dire propre à supprimer ou à limiter l'échappement de ce fluide.A disposable pressurized fluid cartridge includes a bottom, a peripheral side wall and an upper wall having a pierceable portion, and provided internally with a safety device adapted to oppose the escape of the pressurized fluid after perforation, that is to say, to remove or limit the escape of this fluid.

Selon une caractéristique principale, le dispositif de sécurité comprend une pièce support flexible élastiquement portant un joint, ladite pièce support présentant au moins deux points d'appui éloignés l'un de l'autre pour prendre appui contre au moins une paroi interne et exercer une force de rappel appliquant de manière étanche le joint contre la paroi supérieure, autour de ladite partie perforable, ladite pièce support étant propre à s'écarter sous l'action d'un organe de poussée introduit à travers ladite partie perforable pour séparer le joint de la paroi supérieure.According to a main characteristic, the safety device comprises a resiliently flexible support piece bearing a seal, said support piece having at least two support points spaced apart from each other to bear against at least one inner wall and to exert a restoring force sealingly applying the seal against the upper wall, around said pierceable part, said support piece being able to move apart under the action of a thrust member introduced through said pierceable part to separate the seal from the upper wall.

Selon une réalisation particulière de l'invention, la pièce support comprend une lame.According to a particular embodiment of the invention, the support piece comprises a blade.

Selon une première réalisation, le joint est un joint surmoulé sur la lame, la partie supérieure du joint, propre à être appliquée contre la paroi supérieure, laissant apparaître une région de la face supérieure de la lame.According to a first embodiment, the seal is a seal overmolded on the blade, the upper part of the seal, adapted to be applied against the upper wall, revealing a region of the upper face of the blade.

Préférentiellement, la lame comprend une bosse sur laquelle vient se placer le joint surmoulé, la partie supérieure du joint laissant apparaître la face supérieure de la lame dans la région de la bosse.Preferably, the blade comprises a boss on which is placed the overmolded seal, the upper part of the seal revealing the upper face of the blade in the region of the bump.

Avantageusement, la partie supérieure du joint comprend une couronne présentant au moins une extrémité en contact étanche avec la paroi supérieure.Advantageously, the upper portion of the seal comprises a ring having at least one end in sealing contact with the upper wall.

Selon une deuxième réalisation, la lame comprend une coupelle sur sa face supérieure propre à recevoir le joint qui a une configuration torique.According to a second embodiment, the blade comprises a cup on its own upper face to receive the seal which has a toric configuration.

Préférentiellement, la coupelle présente un siège propre à recevoir le joint torique et un puit central concentrique et de profondeur supérieure au siège.Preferably, the cup has a seat adapted to receive the O-ring and a concentric central well and of greater depth than the seat.

Avantageusement, la pièce support est en matière plastique.Advantageously, the support piece is made of plastic.

En alternative, la pièce support est en métal.Alternatively, the support piece is metal.

Dans une première variante de réalisation, la lame comprend à chaque extrémité des moyens d'accroche complémentaires d'enfoncements réalisés en vis à vis dans la paroi latérale périphérique de la cartouche et à distance du fond de la cartouche, ces enfoncements étant réalisés sans saillie vers l'extérieur de la cartouche et ces moyens d'accroche étant propres à coopérer avec ces enfoncements pour définir lesdits points d'appui.In a first variant embodiment, the blade comprises at each end complementary fastening means of depressions made opposite in the peripheral lateral wall of the cartridge and at a distance from the bottom of the cartridge, these depressions being made without protruding to the outside of the cartridge and these attachment means being adapted to cooperate with these depressions to define said support points.

Dans une deuxième variante de réalisation, la lame comprend à chaque extrémité des moyens d'accroche complémentaires d'enfoncements réalisés en vis à vis dans la paroi latérale périphérique de la cartouche et à distance du fond de la cartouche, ces enfoncements étant réalisés en saillie vers l'extérieur de la cartouche et ces moyens d'accroche étant propres à coopérer avec ces enfoncements pour définir lesdits points d'appui.In a second variant embodiment, the blade comprises at each end complementary fastening means of depressions made opposite in the peripheral lateral wall of the cartridge and at a distance from the bottom of the cartridge, these depressions being made protruding to the outside of the cartridge and these attachment means being adapted to cooperate with these depressions to define said support points.

Avantageusement, dans l'état de détente de la lame, la distance entre les moyens d'accroche est supérieure à la distance entre les enfoncements correspondants de manière que la lame soit fléchie pour exercer ladite force de rappel lors de la coopération des moyens d'accroche avec les enfoncements.Advantageously, in the state of expansion of the blade, the distance between the attachment means is greater than the distance between the corresponding depressions so that the blade is bent to exert said restoring force during the cooperation of the means of attachment. hangs with the depressions.

Dans une troisième variante, la lame comprend au moins deux branches symétriques de part et d'autre du joint. Chaque branche de la lame est fléchie de part et d'autre d'un point d'inflexion et comprend une extrémité relevée propre à coopérer avec un enfoncement réalisé au moins en partie dans la paroi latérale périphérique de la cartouche et à distance du fond de la cartouche pour définir lesdits points d'appui, chaque enfoncement étant réalisé sans saillie vers l'extérieur de la cartouche.In a third variant, the blade comprises at least two symmetrical branches on either side of the seal. Each branch of the blade is bent on both sides of a point of inflection and comprises a raised end adapted to cooperate with a recess formed at least partly in the peripheral side wall of the cartridge and at a distance from the bottom of the the cartridge to define said support points, each depression being made without projecting outwardly of the cartridge.

Avantageusement, dans l'état de détente de la lame, la distance entre les extrémités relevées est égale ou supérieure à la distance entre les enfoncements correspondants de manière que la lame soit fléchie pour exercer ladite force de rappel lors de la coopération des extrémités relevées avec les enfoncements.Advantageously, in the state of expansion of the blade, the distance between the raised ends is equal to or greater than the distance between the corresponding depressions so that the blade is bent to exert said restoring force during the cooperation of the raised ends with the depressions.

En option, la lame comprend une partie courbée en forme générale de U faisant ressort.Optionally, the blade includes a curved generally U-shaped portion springing.

Dans une quatrième variante de l'invention, la lame comprend deux branches symétriques de part et d'autre du joint, chaque branche de la lame étant pliée de manière à suivre au moins en partie la forme interne de la cartouche jusqu'au fond, l'extrémité de chaque branche de la lame étant propre à s'appuyer sur le fond de la cartouche et formant l'un desdits points d'appui.In a fourth variant of the invention, the blade comprises two symmetrical branches on either side of the seal, each branch of the blade being folded so as to follow at least partly the internal shape of the cartridge to the bottom, the end of each branch of the blade being adapted to rest on the bottom of the cartridge and forming one of said support points.

De plus, chaque branche de lame comprend une partie pliée en forme générale de U faisant ressort.In addition, each blade leg includes a generally U-shaped bent portion springing.

Optionnellement, chaque partie pliée est suivie d'une charnière reliant la partie pliée à une partie s'étendant vers le fond de la cartouche.Optionally, each folded portion is followed by a hinge connecting the folded portion to a portion extending toward the bottom of the cartridge.

En variante, la lame comprend un anneau reliant les extrémités des branches de la lame.Alternatively, the blade comprises a ring connecting the ends of the branches of the blade.

Selon une première option, la lame comprend au moins une barre de longueur telle que et positionnée de façon telle que ses extrémités touchent la paroi latérale périphérique de la cartouche et sont propres à glisser le long de cette paroi sous l'action de l'organe de poussée sur la lame.According to a first option, the blade comprises at least one bar of length such that and positioned so that its ends touch the peripheral lateral wall of the cartridge and are fit to slide along this wall under the action of the organ thrust on the blade.

Selon une deuxième option, la lame comprend une barre de longueur telle que et positionnée de façon telle que les extrémités touchent la paroi supérieure et sont propres à glisser le long de cette paroi sous l'action de l'organe de poussée sur la lame.According to a second option, the blade comprises a bar of length such that and positioned so that the ends touch the upper wall and are fit to slide along this wall under the action of the thrust member on the blade.

Dans une cinquième variante de réalisation, la lame comprend deux branches symétriques de part et d'autre du joint, chaque partie de la lame étant pliée de façon ondulée et se terminant par une extrémité, chaque extrémité étant propre à s'insérer en vis à vis dans au moins une gorge, réalisée par un repli de la paroi supérieure de la cartouche, pour former l'un desdits points d'appui. En option, chaque branche de la lame est pliée en queue d'aronde et les deux extrémités sont propres à s'insérer dans une même gorge annulaire entourant la partie perforable.In a fifth variant embodiment, the blade comprises two symmetrical branches on either side of the seal, each part of the blade being corrugated folded and terminating at one end, each end being adapted to be screwed in. screw in at least one groove, made by a fold of the upper wall of the cartridge, to form one of said points of support. Optionally, each branch of the blade is bent dovetail and both ends are adapted to fit into the same annular groove surrounding the pierceable portion.

Selon une sixième variante de l'invention, la lame comprend deux branches symétriques de part et d'autre du joint, chaque branches de la lame étant pliée de façon ondulée et se terminant par une extrémité, chaque extrémité étant propre à être solidarisée à la paroi supérieure de la cartouche pour former l'un desdits points d'appui.According to a sixth variant of the invention, the blade comprises two symmetrical branches on either side of the seal, each limb of the blade being corrugated folded and terminating at one end, each end being adapted to be secured to the upper wall of the cartridge to form one of said support points.

En option, chaque branche de la lame est pliée en forme générale de U et les deux extrémités de la lame sont soudées à la paroi supérieure de la cartouche.
Selon une septième variante, une lame flexible élastiquement portant un joint, ladite lame présentant au moins deux points d'appui éloignés l'un de l'autre lui permettant d'exercer une force de rappel élastique sur le joint.Optionally, each branch of the blade is bent in the general U-shape and both ends of the blade are welded to the top wall of the cartridge.
According to a seventh variant, a resiliently flexible blade bearing a seal, said blade having at least two support points spaced apart from one another allowing it to exert an elastic restoring force on the seal.

Optionnellement dans les réalisations précédentes, la lame comprend trois branches partant du joint sous forme d'étoile.Optionally in the previous embodiments, the blade comprises three branches starting from the joint in the form of a star.

Dans une huitième variante de réalisation, le joint est placé au voisinage d'une première extrémité de la lame.In an eighth embodiment, the seal is placed in the vicinity of a first end of the blade.

Selon cette huitième variante, à partir de la première extrémité, la lame est pliée de manière à suivre la forme interne de la cartouche jusqu'au fond, la lame comportant un premier repli propre à s'appuyer sur une première zone du fond et formant le premier point d'appui et un second repli propre à s'appuyer sur une seconde zone du fond et formant le second point d'appui, les premières et seconde zones étant opposées par rapport au centre du fond de la cartouche.According to this eighth variant, from the first end, the blade is folded so as to follow the internal shape of the cartridge to the bottom, the blade having a first fold adapted to bear on a first zone of the bottom and forming the first point of support and a second fold proper to rely on a second zone of the bottom and forming the second fulcrum, the first and second zones being opposite to the center of the bottom of the cartridge.

Selon une neuvième variante, la pièce support est un socle support comprenant un socle de maintien formant une base propre à venir en appui sur le fond de la cartouche, au moins deux branches d'une lame s'étendant depuis le socle de maintien et se rejoignant en un bossage central supportant le joint, chaque branche étant solidaire du socle de maintien.According to a ninth variant, the support piece is a support base comprising a holding base forming a clean base to bear against the bottom of the cartridge, at least two branches of a blade extending from the holding base and joining a central boss supporting the seal, each leg being secured to the holding base.

En option, au moins deux lames flexibles solidaires du socle de maintien s'étendent vers et autour du bossage central et viennent en contact autour de la partie perforable de la cartouche.Optionally, at least two flexible blades integral with the holding base extend towards and around the central boss and come into contact around the pierceable portion of the cartridge.

L'invention concerne également un dispositif de sécurité propre à faire partie d'une cartouche précédemment présentée, comprenant une pièce support flexible élastiquement portant un joint, ladite pièce support présentant au moins deux points d'appui éloignés l'un de l'autre lui permettant d'exercer une force de rappel élastique sur le joint.The invention also relates to a security device adapted to form part of a previously presented cartridge, comprising a resiliently flexible support piece bearing a seal, said support piece having at least two support points distant from one another. allowing to exert an elastic restoring force on the joint.

D'autres caractéristiques et avantages de l'invention apparaîtront à l'examen de la description détaillée ci-après, et des dessins annexés sur lesquels :

  • la figure 1 est une vue en coupe longitudinale d'une cartouche perforable connue de l'état de la technique;
  • la figure 2 est une vue en perspective du dessus du dispositif de sécurité selon une première réalisation de l'invention;
  • la figure 3 est une vue en perspective du dessous du dispositif de sécurité de la figure 2;
  • la figure 4 est une vue de dessus du dispositif de sécurité de la figure 2;
  • la figure 5 est une coupe longitudinale A-A du dispositif de sécurité de la figure 4;
  • la figure 6 est une vue en perspective du dessus de la lame du dispositif de sécurité de la figure 2;
  • la figure 7 est une vue en perspective du dessus du dispositif de sécurité selon une deuxième réalisation de l'invention;
  • la figure 8 est une vue partielle en perspective de la cartouche comprenant le dispositif de sécurité de la figure 2;
  • la figure 9 est une vue en coupe longitudinale d'une cartouche selon la figure 1 comprenant un dispositif de sécurité selon une troisième réalisation de l'invention;
  • la figure 10 est une vue en coupe longitudinale d'une cartouche selon la figure 1 comprenant un dispositif de sécurité selon une quatrième réalisation de l'invention;
  • la figure 11 est une vue en coupe longitudinale d'une cartouche comprenant un dispositif de sécurité selon une cinquième réalisation de l'invention;
  • la figure 12 est une vue en coupe longitudinale d'une cartouche comprenant un dispositif de sécurité selon une sixième réalisation de l'invention;
  • la figure 13 est une vue de dessus de la cartouche comprenant un dispositif de sécurité de la figure 12;
  • la figure 14 est une vue partielle en coupe longitudinale d'une cartouche comprenant un dispositif de sécurité selon une septième réalisation de l'invention;
  • la figure 15 est une vue en coupe longitudinale d'une cartouche comprenant un dispositif de sécurité selon une huitième réalisation de l'invention,
  • la figure 16 est une vue en coupe longitudinale d'un joint de dispositif de sécurité selon une variante de réalisation de la figure 7,
  • les figures 17 à 19 sont des vues en coupe longitudinale d'un joint de dispositif de sécurité selon des variantes de réalisation de l'invention,
  • les figures 20 à 24 sont des vues en coupe longitudinale de variantes de réalisation d'une partie d'un joint de dispositif de sécurité en contact contre une paroi de la cartouche,
  • la figure 25 est une vue en coupe longitudinale d'une cartouche comportant un dispositif de sécurité selon une neuvième variante de réalisation,
  • la figure 26 est une vue en coupe longitudinale du dispositif de sécurité de la figure 26 dans deux positions possibles,
  • la figure 27 est une vue en perspective du dispositif de sécurité des figures 25 et 26 dans une des positions possibles,
  • la figure 28 est une vue en coupe longitudinale d'une cartouche comportant un dispositif de sécurité selon une dixième variante de réalisation,
  • la figure 29 est une vue en perspective du dispositif de sécurité de la figure 28,
  • la figure 30 est une vue de dessus du dispositif de sécurité des figures 28 et 29,
  • la figure 31 est une vue en coupe longitudinale d'une cartouche comportant un dispositif de sécurité selon une onzième variante de réalisation,
  • la figure 32 est une vue en perspective du dispositif de sécurité de la figure 31,
  • la figure 33 est une vue en coupe longitudinale d'une cartouche comportant un dispositif de sécurité selon une douzième variante de réalisation,
  • la figure 34 est une vue en coupe CC de la figure 33,
  • la figure 35 est une vue de côté du dispositif de sécurité selon les figures 33 et 34,
  • la figure 36 est une vue en perspective du dispositif de sécurité des figures 33 à 35,
  • la figure 37 est une vue en coupe longitudinale d'une cartouche comportant un dispositif de sécurité selon une treizième variante de réalisation,
  • la figure 38 est une vue en coupe BB de la figure 37,
  • la figure 39 est une vue en perspective du dispositif de sécurité des figures 37 et 38,
  • la figure 40 est une vue de côté de la figure 39,
  • la figure 41 est une vue de côté d'un dispositif de sécurité selon une quatorzième variante de réalisation,
  • la figure 42 est une vue de dessus du dispositif de sécurité de la figure 41,
  • la figure 43 est une vue en coupe longitudinale d'une cartouche comportant le dispositif de sécurité selon les figures 41 et 42,
  • la figure 44 est une vue de côté d'un dispositif de sécurité selon une quinzième variante de réalisation,
  • la figure 45 est une vue de dessus du dispositif de sécurité de la figure 44,
  • la figure 46 est une vue en coupe longitudinale d'une cartouche comportant le dispositif de sécurité selon les figures 44 et 45,
  • la figure 47 est une vue en perspective du dispositif de sécurité selon une seizième variante de réalisation,
  • la figure 48 est une vue en coupe longitudinale d'une cartouche comportant le dispositif de sécurité selon la figure 47.
Other features and advantages of the invention will appear on examining the detailed description below, and the attached drawings in which:
  • the figure 1 is a longitudinal sectional view of a perforable cartridge known from the state of the art;
  • the figure 2 is a perspective view from above of the security device according to a first embodiment of the invention;
  • the figure 3 is a perspective view of the underside of the safety device of the figure 2 ;
  • the figure 4 is a top view of the safety device of the figure 2 ;
  • the figure 5 is a longitudinal section AA of the safety device of the figure 4 ;
  • the figure 6 is a perspective view of the top of the blade of the safety device of the figure 2 ;
  • the figure 7 is a perspective view from above of the security device according to a second embodiment of the invention;
  • the figure 8 is a partial perspective view of the cartridge comprising the safety device of the figure 2 ;
  • the figure 9 is a longitudinal sectional view of a cartridge according to the figure 1 comprising a safety device according to a third embodiment of the invention;
  • the figure 10 is a longitudinal sectional view of a cartridge according to the figure 1 comprising a safety device according to a fourth embodiment of the invention;
  • the figure 11 is a longitudinal sectional view of a cartridge comprising a safety device according to a fifth embodiment of the invention;
  • the figure 12 is a longitudinal sectional view of a cartridge comprising a safety device according to a sixth embodiment of the invention;
  • the figure 13 is a top view of the cartridge comprising a safety device of the figure 12 ;
  • the figure 14 is a partial view in longitudinal section of a cartridge comprising a safety device according to a seventh embodiment of the invention;
  • the figure 15 is a longitudinal sectional view of a cartridge comprising a safety device according to an eighth embodiment of the invention,
  • the figure 16 is a longitudinal sectional view of a safety device seal according to an embodiment variant of FIG. figure 7 ,
  • the Figures 17 to 19 are views in longitudinal section of a safety device seal according to alternative embodiments of the invention,
  • the Figures 20 to 24 are longitudinal sectional views of alternative embodiments of a portion of a safety device seal in contact with a wall of the cartridge,
  • the figure 25 is a longitudinal sectional view of a cartridge comprising a safety device according to a ninth embodiment variant,
  • the figure 26 is a longitudinal sectional view of the safety device of the figure 26 in two possible positions,
  • the figure 27 is a perspective view of the safety device of Figures 25 and 26 in one of the possible positions,
  • the figure 28 is a longitudinal sectional view of a cartridge comprising a safety device according to a tenth embodiment variant,
  • the figure 29 is a perspective view of the safety device of the figure 28 ,
  • the figure 30 is a top view of the safety device of the Figures 28 and 29 ,
  • the figure 31 is a longitudinal sectional view of a cartridge comprising a safety device according to an eleventh embodiment,
  • the figure 32 is a perspective view of the safety device of the figure 31 ,
  • the figure 33 is a longitudinal sectional view of a cartridge comprising a safety device according to a twelfth embodiment,
  • the figure 34 is a sectional view CC of the figure 33 ,
  • the figure 35 is a side view of the safety device according to the Figures 33 and 34 ,
  • the figure 36 is a perspective view of the safety device of Figures 33 to 35 ,
  • the figure 37 is a longitudinal sectional view of a cartridge comprising a safety device according to a thirteenth embodiment,
  • the figure 38 is a sectional view BB of the figure 37 ,
  • the figure 39 is a perspective view of the safety device of Figures 37 and 38 ,
  • the figure 40 is a side view of the figure 39 ,
  • the figure 41 is a side view of a safety device according to a fourteenth embodiment,
  • the figure 42 is a top view of the safety device of the figure 41 ,
  • the figure 43 is a longitudinal sectional view of a cartridge comprising the safety device according to the Figures 41 and 42 ,
  • the figure 44 is a side view of a safety device according to a fifteenth embodiment,
  • the figure 45 is a top view of the safety device of the figure 44 ,
  • the figure 46 is a longitudinal sectional view of a cartridge comprising the safety device according to the Figures 44 and 45 ,
  • the figure 47 is a perspective view of the security device according to a sixteenth embodiment variant,
  • the figure 48 is a longitudinal sectional view of a cartridge comprising the safety device according to the figure 47 .

La figure 1 représente une cartouche perforable 1 connue de l'état de la technique et présentant une symétrie de révolution autour de l'axe Y. Cette cartouche comprend une pièce emboutie constituée d'une paroi latérale cylindrique 5 et d'une paroi supérieure bombée 3 convexe vers l'extérieur de la cartouche. La paroi supérieure bombée est munie à son sommet et de façon centrée d'une partie en creux 10 convexe vers l'intérieur de la cartouche, cette partie en creux étant en forme de calotte sphérique. Cette partie en creux 10 est propre à être percée en son centre de manière à former un orifice par lequel le fluide sous pression de la cartouche peut s'échapper. De façon connue, la partie cylindrique 5 de la cartouche est fermée à sa base par un fond convexe 7 vers l'intérieur. Cette forme de cartouche perforable est particulièrement adaptée pour contenir un fluide sous pression.The figure 1 represents a perforable cartridge 1 known from the state of the art and having a symmetry of revolution about the Y axis. This cartridge comprises a stamped part consisting of a cylindrical side wall 5 and a convex upper wall 3 convex towards the outside of the cartridge. The domed top wall is provided at its top and centrally with a recessed portion 10 convex towards the inside of the cartridge, this recessed portion being shaped spherical cap. This recessed portion 10 is adapted to be pierced at its center so as to form an orifice through which the pressurized fluid of the cartridge can escape. In known manner, the cylindrical portion 5 of the cartridge is closed at its base by a convex bottom 7 inwardly. This form of perforable cartridge is particularly suitable for containing a fluid under pressure.

Une fois perforée au centre de la partie en creux 10, aucun moyen de fermeture n'est prévu pour conserver le fluide sous pression dans la cartouche. Dans l'application d'une cartouche pour appareils portatifs de type appareil de camping, le fluide sous pression contenu dans la cartouche est un gaz combustible.Once perforated in the center of the hollow portion 10, no closure means is provided to keep the fluid under pressure in the cartridge. In the application of a cartridge for camping-type portable apparatus, the pressurized fluid contained in the cartridge is a combustible gas.

La zone centrale de la partie en creux 10, où s'effectue la perforation, est également appelée partie perforable 11.The central zone of the recessed portion 10, where the perforation is made, is also called perforable part 11.

Les figures 2 à 5 illustrent un dispositif de sécurité selon une première réalisation de l'invention, la figure 6 représentant la lame du dispositif de sécurité selon cette réalisation.The Figures 2 to 5 illustrate a safety device according to a first embodiment of the invention, the figure 6 representing the blade of the safety device according to this embodiment.

Le dispositif de sécurité 12 comprend une lame 15 de forme rectangulaire allongée avec deux faces principales (une face supérieure et une face inférieure) comprenant sur sa longueur une partie pliée en forme générale de U, plus précisément en forme de V dans l'exemple des figures 2 à 6.The safety device 12 comprises a blade 15 of elongated rectangular shape with two main faces (an upper face and a lower face) comprising along its length a generally U-shaped folded part, more precisely in the form of a V in the example of the Figures 2 to 6 .

La lame 15 est munie symétriquement à chaque extrémité de moyens d'accroche comprenant des pattes séparées les unes des autres par des encoches débouchant à l'extrémité de la lame. Ces pattes comprennent une patte centrale 16 pliée au moins en partie perpendiculairement à la lame 15 et entourée de part et d'autre de pattes 19 non pliées. La lame 15 est munie en son milieu d'un joint surmoulé 14 de forme généralement cylindrique qui entoure complètement la section transversale de la lame de manière à être solidarisé à la lame. Le joint comprend une partie supérieure située du côté de la face supérieure de la lame et une partie inférieure située du côté de la face inférieure de la lame. L'axe de révolution du joint surmoulé est perpendiculaire aux faces supérieure et inférieure de la lame. De plus, la partie supérieure du joint surmoulé 14 est évidée en son centre en 24 de manière à laisser apparaître une région de la face supérieure de la lame 15. La partie supérieure du joint surmoulé 14 forme une couronne 13 entourant l'évidement 24.The blade 15 is provided symmetrically at each end of attachment means comprising tabs separated from each other by notches opening at the end of the blade. These tabs comprise a central tab 16 bent at least partly perpendicularly to the blade 15 and surrounded on both sides of tabs 19 unfolded. The blade 15 is provided in its middle with a molded seal 14 of generally cylindrical shape which completely surrounds the cross section of the blade so as to be secured to the blade. The seal comprises an upper portion on the side of the upper face of the blade and a lower portion on the side of the underside of the blade. The axis of revolution of the overmolded seal is perpendicular to the upper and lower faces of the blade. In addition, the upper portion of the overmolded seal 14 is recessed in its center at 24 so as to reveal a region of the upper face of the blade 15. The upper part of the overmolded seal 14 forms a ring 13 surrounding the recess 24.

Les figures 20 à 24 représentent en coupe la partie en creux 10 de la cartouche et la couronne 13 de la partie supérieure du joint surmoulé 14 en appui contre la partie supérieure de la cartouche.The Figures 20 to 24 are in section the recessed portion 10 of the cartridge and the ring 13 of the upper portion of the overmolded seal 14 bears against the upper part of the cartridge.

Selon la réalisation de la figure 20, l'extrémité circulaire 17-1 de la couronne 13 est en appui étanche, autour de la partie perforable 11, contre la partie en creux 10 de la cartouche. Selon la réalisation de la figure 21, l'extrémité circulaire 17-1 de la couronne 13 est en appui étanche, autour de la partie perforable 11, contre la paroi de la cartouche entourant la partie en creux 10. Selon la réalisation de la figure 22, la couronne 13 présente à son extrémité un épaulement circulaire définissant deux extrémités circulaires 17-4 et 17-5, chacune en appui étanche contre la partie en creux 10 de la cartouche. Ces deux extrémités circulaires forment une double étanchéité autour de la partie perforable 11.According to the realization of the figure 20 , the circular end 17-1 of the ring 13 is sealingly abutting around the perforable portion 11 against the recessed portion 10 of the cartridge. According to the realization of the figure 21 , the circular end 17-1 of the ring 13 is sealingly abutting around the pierceable portion 11, against the wall of the cartridge surrounding the recessed portion 10. According to the embodiment of the figure 22 , the ring 13 has at its end a circular shoulder defining two circular ends 17-4 and 17-5, each sealingly against the recessed portion 10 of the cartridge. These two circular ends form a double seal around the perforable part 11.

Selon la réalisation de la figure 23, les deux extrémités 17-4 et 17-5 sont respectivement en appui étanche contre la partie en creux 10 de la cartouche et contre la paroi de la cartouche entourant la partie en creux 10.According to the realization of the figure 23 , the two ends 17-4 and 17-5 respectively bear against the recessed portion 10 of the cartridge and against the wall of the cartridge surrounding the recessed portion 10.

Selon la réalisation de la figure 24, la couronne 13 présente à son extrémité une gorge circulaire entourée de deux extrémités circulaires 17-2 et 17-3, chacune respectivement en appui étanche contre la partie en creux 10 de la cartouche et contre la paroi de la cartouche entourant la partie en creux 10. Ces deux extrémités forment une double étanchéité autour de la partie perforable 11.According to the realization of the figure 24 , the ring 13 has at its end a circular groove surrounded by two circular ends 17-2 and 17-3, each respectively sealingly against the recessed portion 10 of the cartridge and against the wall of the cartridge surrounding the recessed portion 10. These two ends form a double seal around the perforable part 11.

Dans une réalisation particulière de la lame représentée sur la figure 6, la lame 15 comprend une partie bombée de forme générale cylindrique 20 appelée également bosse. Cette partie bombée peut être avantageusement réalisée par repoussage ou par emboutissage. Sur cette partie bombée 20, le joint 14 est surmoulé de manière à être maintenu fixe en translation sur la lame.In a particular embodiment of the blade shown on the figure 6 , the blade 15 comprises a domed generally cylindrical portion 20 also called bump. This curved portion can be advantageously carried out by embossing or stamping. On this curved portion 20, the seal 14 is overmolded so as to be held fixed in translation on the blade.

Dans une variante de réalisation du joint, le joint n'est constitué que d'une partie supérieure surmoulé sur la partie bombée 20 de la lame comme représenté sur les figures 11 et 12, la partie supérieure étant évidée en son centre de manière à laisser apparaître une région de la face supérieure de la lame.In an alternative embodiment of the seal, the seal consists only of an upper portion overmolded on the curved portion 20 of the blade as shown in FIGS. figures 11 and 12 , the upper part being hollowed in its center of to reveal a region of the upper face of the blade.

Dans une autre variante de réalisation de la lame et du joint représentée sur les figures 17, 18 et 19, le joint n'est constitué que d'une partie supérieure surmoulé 74 sur une bosse pleine 22 de la lame. Ladite partie supérieure surmoulé 74 est évidée en son centre et présente ainsi une couronne de manière à laisser apparaître la surface supérieure de la bosse (ou bossage) correspondant à une région de la face supérieure de la lame. La base de la partie supérieure surmoulée 74 présente une certaine épaisseur de façon à avoir une surface de contact importante avec les faces latérales du bossage et la face supérieure de la lame. La bosse pleine 22 peut être réalisée de diverses manières dont celles présentées sur les figures 17, 18 et 19. Ainsi, la figure 17 représente une bosse en coupe dont les faces latérales 23 présentent un angle droit avec la face supérieure de la lame. La figure 18 représente une bosse 22 en coupe dont les faces latérales 23 sont inclinées par rapport à la face supérieure de la lame. La figure 19 représente une bosse 22 en coupe dont les faces latérales 23 présentent un épaulement. La couronne du joint peut être réalisées selon les variantes de réalisation des figures 20 à 23 à titre d'exemple uniquement.In another embodiment of the blade and the seal shown on the Figures 17, 18 and 19 the seal consists only of an overmolded upper portion 74 on a full boss 22 of the blade. Said overmolded upper portion 74 is recessed in its center and thus has a ring so as to reveal the upper surface of the boss (or boss) corresponding to a region of the upper face of the blade. The base of the overmolded upper portion 74 has a certain thickness so as to have a large contact surface with the side faces of the boss and the upper face of the blade. The full hump 22 can be made in a variety of ways including those presented on the Figures 17, 18 and 19 . So, the figure 17 represents a sectional hump whose side faces 23 have a right angle with the upper face of the blade. The figure 18 represents a boss 22 in section whose side faces 23 are inclined relative to the upper face of the blade. The figure 19 represents a boss 22 in section whose side faces 23 have a shoulder. The crown of the seal can be made according to the variants of embodiment of Figures 20 to 23 for example only.

Comme illustré sur les figures 2 à 5, la partie évidée 24 du joint surmoulé 14 laisse apparaître la face supérieure de la lame dans la région de la partie bombée 20. La partie inférieure du joint recouvrant la face inférieure de la lame a une épaisseur sensiblement constante et présente donc une partie concave 28 en regard de la partie concave de la lame.As illustrated on Figures 2 to 5 , the recessed portion 24 of the overmolded seal 14 reveals the upper face of the blade in the region of the convex portion 20. The lower portion of the seal covering the underside of the blade has a substantially constant thickness and therefore has a concave portion 28 next to the concave part of the blade.

Une variante de réalisation est illustrée sur les figures 7 et 16. Les mêmes références sur la figure 7 et les figures précédentes désignent des éléments identiques. Sur la face supérieure de la lame, la lame porte une coupelle 30 placée en son milieu. Cette coupelle peut être fixée sur la lame par soudage ou par tout autre procédé. Cette coupelle 30 est d'une profondeur adéquate pour recevoir un joint torique 32.An alternative embodiment is illustrated on the figures 7 and 16 . The same references on the figure 7 and the preceding figures denote identical elements. On the upper face of the blade, the blade carries a cup 30 placed in the middle. This cup can be fixed to the blade by welding or by any other method. This cup 30 is of a depth adequate to receive an O-ring 32.

Selon une réalisation particulière de la figure 16, la coupelle présente un siège 33 ayant une certaine profondeur pour recevoir le joint torique et un puit central 35 concentrique et de profondeur supérieure au siège 33.According to a particular embodiment of the figure 16 , the cup has a seat 33 having a certain depth to receive the O-ring and a concentric central well 35 of greater depth than the seat 33.

La lame 15 du dispositif de sécurité 12 est flexible élastiquement. Elle peut être réalisée en métal, par exemple pour la réalisation des figures 2 à 5. La lame 15 du dispositif de sécurité 12 peut également être réalisée en matière plastique.The blade 15 of the safety device 12 is elastically flexible. It can be made of metal, for example for the realization of Figures 2 to 5 . The blade 15 of the safety device 12 can also be made of plastic.

La figure 8 illustre le dispositif de sécurité une fois mis en place à l'intérieur d'une cartouche.The figure 8 illustrates the security device once set up inside a cartridge.

Le dispositif est introduit et mis en place à l'intérieur de la cartouche avant la fermeture de la cartouche, qui s'effectue par l'assemblage du fond avec la pièce emboutie de la cartouche.The device is introduced and put in place inside the cartridge before the closure of the cartridge, which is carried out by assembling the bottom with the stamped part of the cartridge.

Bien que le dispositif de sécurité 12 une fois mis en place comme représenté sur la figure 8 corresponde au dispositif de sécurité 12 des figures 2 à 5, le dispositif de sécurité selon la réalisation de la figure 7 peut être mis en place de la même manière sur une cartouche avant assemblage du fond avec la pièce emboutie.Although the security device 12 once set up as shown on the figure 8 corresponds to the safety device 12 of the Figures 2 to 5 , the safety device according to the realization of the figure 7 can be placed in the same way on a cartridge before assembly of the bottom with the stamped part.

Le dispositif de sécurité 12 est placé à l'intérieur de la pièce emboutie de manière que la lame suive la forme de la paroi supérieure bombée 3 de la cartouche 1. La couronne 13 du joint est appliquée contre la paroi supérieure bombée et autour de la partie perforable 11 pour assurer une étanchéité après retrait d'un organe ayant perforé la partie perforable.The safety device 12 is placed inside the stamped part so that the blade follows the shape of the convex upper wall 3 of the cartridge 1. The ring 13 of the seal is applied against the convex upper wall and around the perforable portion 11 to provide a seal after removal of a member having perforated the perforable portion.

La cartouche comprend, pour recevoir chaque extrémité de la lame, des enfoncements réalisés en vis à vis préférentiellement dans la paroi latérale de la cartouche et à distance du fond de la cartouche, ces enfoncements étant avantageusement formés sans saillie vers l'extérieur de la cartouche. Pour chaque extrémité de la lame, deux enfoncements 34 forment des saillies vers l'intérieur sur lesquelles s'appuient respectivement les pattes non pliées 19, les saillies étant écartées l'une de l'autre de manière à laisser un espace entre elles pour la patte pliée 16. Cette patte pliée vient en appui contre la paroi latérale interne de la cartouche entre les deux enfoncements. De manière générale, les paires d'enfoncements sont réalisés symétriquement par rapport à la partie perforable de la cartouche. Pour une paroi latérale cylindrique de la cartouche, les paires d'enfoncements sont plus particulièrement diamétralement opposées. Ainsi, les moyens d'accroche de chaque extrémité sont complémentaires des enfoncements 34 réalisés dans la paroi latérale de la cartouche.The cartridge comprises, to receive each end of the blade, depressions made preferably opposite in the side wall of the cartridge and at a distance from the bottom of the cartridge, these depressions being advantageously formed without projecting towards the outside of the cartridge. . For each end of the blade, two recesses 34 form inward protrusions on which the unfolded tabs 19 rest respectively, the projections being spaced apart from each other so as to leave a space between them for the folded tab 16. This folded tab bears against the internal side wall of the cartridge between the two recesses. In general, the pairs of recesses are made symmetrically with respect to the pierceable portion of the cartridge. For a cylindrical side wall of the cartridge, the pairs of depressions are more particularly diametrically opposed. Thus, the attachment means of each end are complementary to the recesses 34 made in the side wall of the cartridge.

Les moyens d'accroche coopèrent avec les moyens de positionnement que sont les enfoncements de façon à ce que la lame ait deux points d'appui contre au moins une paroi interne de la cartouche.The attachment means cooperate with the positioning means that are the depressions so that the blade has two points of support against at least one inner wall of the cartridge.

Dans l'état de détente de la lame 15, la distance entre les moyens d'accroche est supérieure à la distance entre les enfoncements correspondants 34, symétriquement positionnés dans la cartouche. Ainsi, la lame 15 doit être fléchie de manière à suivre la courbure de la paroi supérieure bombée 3 et pour exercer ladite force de rappel lors de la coopération des moyens d'accroche avec les enfoncements. Le joint surmoulé 24 est alors appliqué contre la paroi supérieure bombée 3 autour de la partie perforable 11.In the state of expansion of the blade 15, the distance between the attachment means is greater than the distance between the corresponding recesses 34, symmetrically positioned in the cartridge. Thus, the blade 15 must be bent so as to follow the curvature of the curved upper wall 3 and to exert said restoring force during the cooperation of the attachment means with the depressions. The overmolded seal 24 is then applied against the convex upper wall 3 around the pierceable portion 11.

Les remarques suivantes permettront de mieux comprendre le positionnement et le fonctionnement d'un dispositif de sécurité selon l'invention.The following remarks will better understand the positioning and operation of a safety device according to the invention.

La lame est placée dans la cartouche de manière à avoir un point d'appui à chacune de ses extrémités et de manière à exercer une force qui tend à presser le joint contre la paroi supérieure bombée 3.The blade is placed in the cartridge so as to have a point of support at each of its ends and so as to exert a force which tends to press the seal against the convex upper wall 3.

La lame est placée dans la cartouche de manière que la région de la face supérieure de la lame dégagée par la partie évidée 24 du joint surmoulé soit en vis à vis de la partie perforable 11 de la cartouche.The blade is placed in the cartridge so that the region of the upper face of the blade released by the recessed portion 24 of the overmolded seal is opposite the pierceable portion 11 of the cartridge.

La cartouche est ensuite remplie de fluide sous pression et le fond est fixé sur la pièce emboutie de la cartouche par exemple par sertissage.The cartridge is then filled with fluid under pressure and the bottom is fixed on the stamped part of the cartridge for example by crimping.

Ainsi, lorsque la cartouche est perforée par une pointe dans la zone 11 au centre de la partie 10, la pointe vient appuyer contre la région de la face supérieure de la lame laissée apparente. La force exercée par la pointe étant supérieure à la force de rappel de la lame qui tend à presser le joint contre la paroi supérieure bombée, le joint est repoussé de cette paroi. La pointe doit maintenir la force exercée sur le dispositif de sécurité de manière à laisser échapper le fluide sous pression de la cartouche. Dès que la pointe n'exerce plus de force sur le dispositif de sécurité lorsque la cartouche est retirée de l'appareil, la lame repousse le joint contre la paroi supérieure bombée 3 au moyen d'une force de rappel. Ce dispositif de sécurité sert de moyen de fermeture lorsque la cartouche perforée est enlevée de l'appareil auquel elle est raccordée. Ainsi, la cartouche perforée peut être réutilisée autant de fois que désiré puisque le fluide sous pression est maintenu dans la cartouche grâce à ce dispositif de sécurité selon l'invention.Thus, when the cartridge is perforated by a tip in the zone 11 in the center of the portion 10, the tip is pressed against the region of the upper face of the blade left exposed. The force exerted by the tip being greater than the restoring force of the blade which tends to press the seal against the curved upper wall, the seal is pushed from this wall. The tip must maintain the force exerted on the safety device so as to release the pressurized fluid from the cartridge. As soon as the tip no longer exerts force on the safety device when the cartridge is removed from the device, the blade pushes the seal against the curved upper wall 3 by means of a restoring force. This safety device serves as a closing means when the perforated cartridge is removed from the device to which it is connected. Thus, the perforated cartridge can be reused as many times as desired since the pressurized fluid is held in the cartridge by this safety device according to the invention.

D'autres réalisations du dispositif de sécurité selon l'invention sont maintenant décrites. Ces réalisations ne nécessitent pas de modifications de la cartouche, contrairement aux réalisations précédentes.Other embodiments of the security device according to the invention are now described. These achievements do not require modifications of the cartridge, unlike previous achievements.

La figure 9 illustre une cartouche munie d'un dispositif de sécurité selon un troisième mode de réalisation. Ce dispositif de sécurité 40 comprend une lame 41 portant un joint généralement cylindrique 44 surmoulé au voisinage d'une extrémité 42 de la lame 41. La partie supérieure de ce joint 44 est évidée en son centre pour former une couronne 49 et laisser apparaître une région de la face supérieure de la lame 41. La couronne du joint 44 est appliquée sur la paroi supérieure bombée 3 autour de la partie perforable 11 de manière que la région de la face supérieure de la lame laissée apparente soit placée en vis à vis de la partie perforable 11. A partir de l'extrémité 42, la lame 41 est pliée de manière à suivre la forme interne de la paroi supérieure bombée 3 puis de la paroi latérale 5 de la cartouche jusqu'au fond convexe 7 de la cartouche opposé à la paroi supérieure bombée,(ou plus précisément à la partie perforable). La lame 41 présente un premier repli s'appuyant sur une première zone du fond convexe 7 de la cartouche et formant un premier point d'appui. La lame 41 suit ensuite la forme convexe du fond de la cartouche avant de présenter un second repli 48 s'appuyant sur une seconde zone du fond de la cartouche et formant un second point d'appui. Les premières et secondes zones du fond de la cartouche sont opposées par rapport au centre du fond de la cartouche.The figure 9 illustrates a cartridge provided with a safety device according to a third embodiment. This safety device 40 comprises a blade 41 carrying a generally cylindrical seal 44 molded in the vicinity of an end 42 of the blade 41. The upper part of this seal 44 is recessed at its center to form a ring 49 and revealing a region of the upper face of the blade 41. The crown of the seal 44 is applied to the rounded upper wall 3 around the pierceable portion 11 so that the region of the upper face of the blade left exposed is placed in a screw With respect to the perforable portion 11. From the end 42, the blade 41 is folded so as to follow the internal shape of the convex upper wall 3 and then of the lateral wall 5 of the cartridge to the convex bottom 7 of the cartridge opposite to the curved upper wall, (or more precisely to the perforable part). The blade 41 has a first fold supported on a first zone of the convex bottom 7 of the cartridge and forming a first fulcrum. The blade 41 then follows the convex shape of the bottom of the cartridge before presenting a second fold 48 resting on a second zone of the bottom of the cartridge and forming a second fulcrum. The first and second areas of the bottom of the cartridge are opposite to the center of the bottom of the cartridge.

Comme précédemment, l'extrémité 42 de la lame 41 tend à presser le joint contre la paroi supérieure bombée 3 de la cartouche exerçant ainsi une force de rappel. Le dispositif de sécurité 40 fonctionne de la même manière que précédemment. Ainsi, une pointe peut repousser le joint de la paroi supérieure bombée 3 en exerçant une force opposée et supérieure à la force de rappel de la lame sur la région de la face supérieure de la lame laissée apparente. Lorsque la pointe n'exerce plus cette force sur cette région, la force de rappel de la lame tend à repousser le joint contre la paroi supérieure bombée.As before, the end 42 of the blade 41 tends to press the seal against the convex upper wall 3 of the cartridge thus exerting a restoring force. The security device 40 operates in the same manner as before. Thus, a tip can push the seal of the domed upper wall 3 by exerting an opposite force and greater than the restoring force of the blade on the region of the upper face of the blade left exposed. When the tip no longer exerts this force on this region, the return force of the blade tends to push the seal against the curved upper wall.

La figure 10 illustre une cartouche munie d'un dispositif de sécurité selon un quatrième mode de réalisation.The figure 10 illustrates a cartridge provided with a safety device according to a fourth embodiment.

Dans cette réalisation, la lame est pliée de manière symétrique, le joint 44 est surmoulé en son milieu. A partir de ce joint 44, une des deux branches symétriques de la lame est décrite ci-dessous. Cette branche de lame est pliée de manière à suivre la forme interne de la cartouche jusqu'au fond 7 opposée à la paroi supérieure bombée, l'extrémité 58 de la branche de la lame étant propre à s'appuyer sur ce fond 7 de la cartouche pour former un point d'appui. L'extrémité 58 est avantageusement pliée pour suivre la forme du fond 7 de la cartouche. De manière avantageuse, cette branche de lame comprend en regard de la paroi 3 une partie pliée en forme générale de U de manière à jouer le rôle de ressort. L'autre branche de lame est symétrique de la branche de lame qui a été décrite.In this embodiment, the blade is folded symmetrically, the seal 44 is overmolded in the middle. From this seal 44, one of the two symmetrical branches of the blade is described below. This blade branch is folded so as to follow the internal shape of the cartridge until bottom 7 opposite the curved upper wall, the end 58 of the branch of the blade being adapted to rest on the bottom 7 of the cartridge to form a fulcrum. The end 58 is advantageously folded to follow the shape of the bottom 7 of the cartridge. Advantageously, this blade branch comprises facing the wall 3 a folded portion generally U-shaped so as to act as a spring. The other blade branch is symmetrical with the blade branch that has been described.

Ainsi, la symétrie du dispositif de sécurité 50 confère une stabilité au dispositif de sécurité 50, les parties pliées 54 et 56 symétriques en forme générale de U sont disposées de part et d'autre du joint 44 de manière à jouer le rôle de ressort. Ces parties pliées sont en regard de la paroi supérieure bombée 3. Comme dans le dispositif précédent, la lame 51 exerce une force de rappel qui tend à presser le joint contre la paroi supérieure bombée 3 et autour de la partie perforable 11.Thus, the symmetry of the safety device 50 gives stability to the safety device 50, the generally U-shaped symmetrical folded portions 54 and 56 are arranged on either side of the seal 44 so as to act as a spring. These folded parts are facing the curved upper wall 3. As in the previous device, the blade 51 exerts a restoring force which tends to press the seal against the convex upper wall 3 and around the perforable portion 11.

Dans les figures suivantes, et comme décrit pour les figures précédentes, les dispositifs de sécurité illustrés en variante comprennent une lame portant un joint pouvant être réalisé selon l'une des variantes présentées ci-dessus. De façon commune aux dispositifs de sécurité illustrés, la lame est placée dans la cartouche de manière à avoir un point d'appui à chacune de ses extrémités et de manière à exercer une force qui tend à presser le joint contre la paroi supérieure bombée 3. De plus, la lame est placée dans la cartouche de manière que la région de la face supérieure de la lame dégagée par la partie évidée du joint surmoulé soit en vis à vis de la partie perforable 11 de la cartouche.In the following figures, and as described for the preceding figures, the safety devices illustrated in a variant comprise a blade carrying a seal that can be made according to one of the variants presented above. In common with the illustrated safety devices, the blade is placed in the cartridge so as to have a point of support at each of its ends and so as to exert a force which tends to press the seal against the convex upper wall 3. In addition, the blade is placed in the cartridge so that the region of the upper face of the blade released by the recessed portion of the overmolded seal is opposite the pierceable portion 11 of the cartridge.

Les figures 11 à 13 présentent des variantes de réalisation du dispositif de sécurité de la figure 8 une fois mis en place à l'intérieur d'une cartouche.The Figures 11 to 13 present alternative embodiments of the safety device of the figure 8 once set up inside a cartridge.

Sur la figure 11, la cartouche comprend, pour recevoir chaque extrémité de la lame, des enfoncements réalisés en vis à vis préférentiellement et dans une paroi interne, à la limite de la paroi supérieure et de la paroi latérale de la cartouche et à distance du fond de la cartouche, ces enfoncements étant avantageusement formés sans saillie vers l'extérieur de la cartouche. Chaque enfoncement 63 forme un bossage en saillie vers l'intérieur sur lequel s'appuie une extrémité relevée 65 de la lame du dispositif de sécurité. De manière générale, les enfoncements sont réalisés symétriquement par rapport à la partie perforable de la cartouche. Pour une paroi latérale cylindrique de la cartouche, les enfoncements sont plus particulièrement diamétralement opposés.On the figure 11 , the cartridge comprises, to receive each end of the blade, recesses made in opposite preferably and in an inner wall, at the limit of the upper wall and the side wall of the cartridge and at a distance from the bottom of the cartridge, these depressions being advantageously formed without projecting towards the outside of the cartridge. Each depression 63 forms an inwardly projecting boss on which a raised end 65 of the safety device blade is supported. In general, the depressions are made symmetrically with respect to the pierceable portion of the cartridge. For a cylindrical side wall of the cartridge, the depressions are more particularly diametrically opposed.

Dans cette réalisation, la lame 61 porte un joint surmoulé 64 en son milieu présentant un axe de symétrie W. La lame 61 comprend au moins deux branches 66 symétriques par rapport à l'axe W de part et d'autre du joint 64 surmoulé. Chaque branche 66 de la lame présente une double courbure. En d'autres termes, chaque branche 66 de la lame est fléchie de part et d'autre d'un point d'inflexion (z et z'). En partant du joint surmoulé, chaque branche de la lame suit tout d'abord la paroi supérieure 3 de la cartouche puis, après le point d'inflexion, chaque branche de la lame est fléchie, plus particulièrement redressée, pour que son extrémité relevée 65 puisse s'appuyer contre l'enfoncement 63 (ou bossage) réalisé dans la paroi latérale périphérique 5 de la cartouche et à distance du fond 7 de la cartouche.In this embodiment, the blade 61 has a molded seal 64 at its center having an axis of symmetry W. The blade 61 comprises at least two branches 66 symmetrical with respect to the axis W on either side of the overmolded seal 64. Each branch 66 of the blade has a double curvature. In other words, each branch 66 of the blade is flexed on either side of an inflection point (z and z '). Starting from the overmolded joint, each branch of the blade first follows the upper wall 3 of the cartridge and then, after the point of inflection, each branch of the blade is bent, more particularly straightened, so that its raised end 65 can abut against the depression 63 (or boss) made in the peripheral side wall 5 of the cartridge and at a distance from the bottom 7 of the cartridge.

Dans cette réalisation, la fonction de ressort du dispositif de sécurité 60 ou, plus précisément, l'exercice de la force de rappel de la lame sur le joint est en partie assurée par

  • le changement de courbure de la lame de part et d'autre du point d'inflexion et
  • le fait que la lame 61 doit être fléchie pour que les extrémités relevées 65 coopèrent avec les enfoncements 63 pour définir les points d'appui : en effet, dans l'état de détente de la lame 61, la distance entre les extrémités relevées 65 est égale ou supérieure à la distance entre les enfoncements correspondants 63.
In this embodiment, the spring function of the safety device 60 or, more specifically, the exercise of the return force of the blade on the seal is partly ensured by
  • the change of curvature of the blade on both sides of the point of inflection and
  • the fact that the blade 61 must be bent so that the raised ends 65 cooperate with the recesses 63 to define the bearing points: in fact, in the expansion state of the blade 61, the distance between the raised ends 65 is equal to or greater than the distance between the corresponding depressions 63.

Dans la réalisation des figures 12 et 13, il est utilisé le fait que la cartouche comprend une paroi latérale périphérique inférieure 5-1 et une paroi latérale périphérique supérieure 5-2, le diamètre extérieure φext de la paroi latérale périphérique inférieure 5-1 étant inférieur au diamètre extérieur de la paroi latérale périphérique supérieure 5-2. De ce fait, il peut être pratiqué dans la paroi latérale périphérique supérieure 5-2 des enfoncements 73 en saillie vers l'extérieur de la cartouche sans que ces enfoncements ne dépassent au-delà du plus grand des diamètres extérieures (φext). De cette manière, les normes d'encombrement d'une cartouche sont respectées.In the realization of Figures 12 and 13 , it is used that the cartridge comprises a lower peripheral side wall 5-1 and an upper peripheral side wall 5-2, the outside diameter φext of the lower peripheral side wall 5-1 being smaller than the outside diameter of the side wall upper device 5-2. As a result, it can be formed in the upper peripheral side wall 5-2 of the recesses 73 projecting outwardly from the cartridge without these depressions protruding beyond the largest of the outer diameters (φext). In this way, the standards of size of a cartridge are respected.

A titre d'exemple, la figure 13 montre la réalisation d'une première et d'une deuxième paire d'enfoncement en vis à vis pour recevoir respectivement la première et la deuxième extrémité de la lame.For example, the figure 13 shows the realization of a first and a second recess pair opposite to respectively receive the first and the second end of the blade.

Selon la figure 12, la lame 71 comprend à chaque extrémité des moyens d'accroche complémentaires des enfoncements 73 réalisés en vis à vis dans la paroi latérale périphérique 5 de la cartouche et à distance du fond 7 de la cartouche. Ces moyens d'accroche sont deux pattes réalisées à chaque extrémité de la lame. Lors de la mise en place du dispositif de sécurité 70 de la figure 12, les pattes 75 sont insérées dans les enfoncements pour définir les points d'appui du dispositif.According to figure 12 , the blade 71 comprises at each end complementary attachment means of the recesses 73 made opposite in the peripheral side wall 5 of the cartridge and at a distance from the bottom 7 of the cartridge. These attachment means are two lugs made at each end of the blade. When setting up the safety device 70 of the figure 12 , the tabs 75 are inserted into the depressions to define the support points of the device.

Comme dans la réalisation de la figure 8, dans l'état de détente de la lame 71, la distance entre les paires de pattes de chaque extrémité de la lame est supérieure à la distance entre les enfoncements correspondants 73. Ainsi, la lame 71 doit être fléchie pour exercer une force de rappel sur le joint lors de la coopération des pattes 75 avec les enfoncements 73.As in the realization of the figure 8 in the state of expansion of the blade 71, the distance between the pairs of legs of each end of the blade is greater than the distance between the corresponding depressions 73. Thus, the blade 71 must be bent to exert a restoring force. on the joint during the cooperation of the legs 75 with the depressions 73.

Les figures 14 et 15 présentent des variantes de réalisation du dispositif de sécurité une fois mis en place à l'intérieur d'une cartouche.The Figures 14 and 15 present alternative embodiments of the safety device once set up inside a cartridge.

Sur la figure 14, la paroi supérieure bombée de la cartouche comprend une zone surélevée par rapport au reste de la paroi supérieure, cette zone surélevée entourant et comprenant la partie perforable 11. Le trait interrompu représente le niveau de la paroi supérieure bombée de la cartouche dans les réalisations précédentes. De manière à garder un encombrement en hauteur identique aux réalisations précédentes, la paroi supérieure bombée de la cartouche est abaissée, seule la zone surélevée conserve la hauteur de la paroi supérieure bombée des réalisations précédentes. La zone surélevée est préférentiellement circulaire et est reliée au reste de la paroi supérieure par un repli de la paroi supérieure formant une gorge annulaire 82 de direction générale horizontale à l'intérieur de la cartouche.On the figure 14 the convex upper wall of the cartridge comprises an elevated area relative to the remainder of the upper wall, this raised area surrounding and including the pierceable portion 11. The broken line represents the level of the domed upper wall of the cartridge in the previous embodiments . So as to keep a height requirement identical to the previous embodiments, the curved upper wall of the cartridge is lowered, only the raised area retains the height of the domed top wall of previous embodiments. The raised zone is preferably circular and is connected to the remainder of the upper wall by a fold of the upper wall forming an annular groove 82 of horizontal general direction inside the cartridge.

Dans une variante de réalisation, la zone surélevée peut être d'une toute autre forme et être reliée au reste de la paroi supérieure par une ou plusieurs gorges ou par des parois verticales comprenant des enfoncements.In an alternative embodiment, the raised area may be of any other shape and be connected to the remainder of the upper wall by one or more grooves or vertical walls comprising depressions.

La lame 81 porte un joint surmoulé 44 par exemple. La lame comprend deux branches symétriques 84 de part et d'autre du joint. Chaque branche 84 de la lame est pliée de façon ondulée et se termine par une extrémité pliée 83. Dans l'exemple de la figure 14, chaque branche 84 de la lame est pliée en une queue d'aronde de manière qu'une fois le dispositif de sécurité 80 placé dans la cartouche, le joint 44 soit situé principalement au-dessus des branches pliées en queue d'aronde. Chaque branche 84 se termine par une extrémité pliée complémentaire de la gorge annulaire et propre à s'insérer dans la gorge annulaire 82 pour former l'un des points d'appui.The blade 81 carries an overmolded seal 44 for example. The blade comprises two symmetrical branches 84 on either side of the seal. Each branch 84 of the blade is corrugated and ends with a folded end 83. In the example of FIG. figure 14 each branch 84 of the blade is folded into a dovetail so that once the safety device 80 is placed in the cartridge, the seal 44 is located mainly above the dovetailed folded branches. Each branch 84 ends with a complementary folded end of the annular groove and adapted to be inserted into the annular groove 82 to form one of the support points.

Le joint appliqué contre la partie perforable est soumis à une force de rappel exercée par chaque partie en queue d'arondeThe seal applied against the pierceable portion is subjected to a restoring force exerted by each dovetail portion

La figure 15 présente une autre réalisation d'un dispositif de sécurité 90. Cette réalisation prévoit une lame 91 portant un joint surmoulé 44. La lame 91 comprend deux branches symétriques 94 de part et d'autre du joint. Chaque branche de la lame est pliée de façon ondulée et se termine par une extrémité 92. Chaque extrémité est solidarisée à la paroi supérieure 3 de la cartouche pour former l'un des points d'appui.The figure 15 another embodiment of a safety device 90. This embodiment provides a blade 91 carrying an overmolded seal 44. The blade 91 comprises two symmetrical branches 94 on either side of the seal. Each branch of the blade is corrugated folded and ends with an end 92. Each end is secured to the upper wall 3 of the cartridge to form one of the support points.

Dans la réalisation particulière de la figure 15, chaque partie 94 de la lame est pliée en forme générale de U. De plus, les deux extrémités 92 de la lame sont soudées à la paroi supérieure 3 de la cartouche pour former un appui.In the particular realization of the figure 15 each portion 94 of the blade is generally U-shaped. In addition, both ends 92 of the blade are welded to the upper wall 3 of the cartridge to form a support.

Les figures 25 à 27 présentent une variante de réalisation du dispositif de sécurité seul et une fois mis en place à l'intérieur d'une cartouche. Dans cette réalisation, la lame est pliée de manière symétrique et présente une bosse pleine 22 recevant le joint 74 surmoulé sur la face supérieure de la lame et propre à former un contact étanche autour de la partie perforable 11 de la cartouche. De part et d'autre du plateau 101 supportant la bosse pleine, s'étendent deux branches de lame. La lame est pliée sur une partie 101 sous forme de U renversé puis est pliée symétriquement pour former deux arrondies 102 en forme générale de U renversé. Les parties 102 permettent d'assurer un rôle de ressort de la lame. Chaque branche de la lame est pliée de manière à suivre au moins en partie la forme interne de la cartouche jusqu'au fond. Les parties 102 de lame sont reliées à des parties 104 par une charnière 110. Les parties 104 ont des extrémités 106 repliées vers l'intérieur du dispositif et propres à s'appuyer sur le fond 7 de la cartouche de manière à former chacune un point d'appui. Les charnières 110 permettent aux parties 104 de la lame d'être dépliables seulement vers l'extérieur du dispositif en position d'ouverture. Ces charnières 110 permettent à la lame de présenter un encombrement réduit en cas de stockage avant utilisation dans une cartouche perforable.The Figures 25 to 27 show an alternative embodiment of the safety device alone and once set up inside a cartridge. In this embodiment, the blade is folded symmetrically and has a solid boss 22 receiving the seal 74 overmolded on the upper face of the blade and adapted to form a sealed contact around the pierceable portion 11 of the cartridge. On either side of the plate 101 supporting the solid boss, extend two blade branches. The blade is folded on a portion 101 in the form of U inverted and is folded symmetrically to form two rounded 102 generally U-shaped overturned. The parts 102 serve to ensure a spring role of the blade. Each branch of the blade is folded so as to follow at least part of the internal shape of the cartridge to the bottom. The blade portions 102 are connected to portions 104 by a hinge 110. The portions 104 have ends 106 folded toward the interior of the device and adapted to abut the bottom 7 of the cartridge so as to each form a point support. The hinges 110 allow the portions 104 of the blade to be unfolded only to the outside of the device in the open position. These hinges 110 allow the blade to have a small footprint in case of storage before use in a perforable cartridge.

Il est possible également d'envisager des parties 104 comprenant des extrémités 106 repliées vers l'extérieur du dispositif. Dans ce cas, les charnières 110 autorisent seulement aux parties 104 de la lame d'être pliables vers l'intérieur du dispositif en position de fermeture.It is also possible to envisage parts 104 comprising ends 106 folded towards the outside of the device. In this case, the hinges 110 only allow the portions 104 of the blade to be folded inwardly of the device in the closed position.

Les variantes de lames décrites ci-dessus peuvent présenter des charnières 110 comme indiqué.The blade variants described above may have hinges 110 as shown.

Dans le cas des réalisations des figures 8 et 11 à 13, une variante de réalisation consiste en une lame comprenant au moins trois branches de lame reliées entre-elles au niveau du joint, la lame ayant la forme d'une étoile. Chaque extrémité des trois branches coopère avec la paroi latérale de la cartouche de la même manière qu'une des extrémités de la lame des réalisations précédentes. Chaque partie des branches de la lame est pliée de manière à suivre au moins en partie la forme interne de la cartouche jusqu'au fond.In the case of the achievements of figures 8 and 11 to 13 , an alternative embodiment consists of a blade comprising at least three blade branches interconnected at the joint, the blade having the shape of a star. Each end of the three branches cooperates with the side wall of the cartridge in the same manner as one of the ends of the blade of the previous embodiments. Each part of the branches of the blade is folded so as to follow at least partly the internal shape of the cartridge to the bottom.

Un exemple de réalisation d'une lame en forme d'étoile est donné aux figures 28 à 30. Dans cet exemple, un plateau 115 en forme de triangle comprend la bosse pleine 22. Chaque branche est reliée au plateau commun 115, une branche présentant une partie 111 de raccord au plateau 115, puis une partie 112 sous forme de U arrondi renversé se terminant par une partie 114 venant en appui sur le fond 7 de la cartouche. La lame est utilisé comme moyen de ressort pour exercer une force de rappel appliquant de manière étanche le joint contre la paroi supérieure de la cartouche.An exemplary embodiment of a star-shaped blade is given to Figures 28 to 30 . In this example, a plate 115 in the form of a triangle comprises the full boss 22. Each branch is connected to the common plate 115, a branch having a portion 111 of connection to the plate 115, then a portion 112 in the form of an inverted rounded U ending by a portion 114 bearing on the bottom 7 of the cartridge. The blade is used as a spring means for exerting a restoring force sealingly applying the seal against the top wall of the cartridge.

D'autres réalisations selon l'invention sont présentées ci-après.Other embodiments according to the invention are presented below.

Les figures 31 et 32 présentent un dispositif comprenant une lame pliée symétriquement en deux branches. La lame comprend un plateau 120 porteur d'une bosse pleine 22 sur laquelle vient le joint surmoulé 74. A partir du plateau commun 120 se raccorde une partie 121, à laquelle se raccorde une partie 122 sous forme de U arrondi renversé se terminant par une partie 124 venant en appui sur le fond 7 de la cartouche. La lame présente symétriquement les mêmes parties à partir du plateau commun. La lame comprend un anneau 125 raccordant les parties 124 symétriques à leur base. Cet anneau 125 est propre à venir en contact sur le fond 7 de la cartouche et permet le centrage du dispositif dans la cartouche.The Figures 31 and 32 have a device comprising a blade symmetrically folded into two branches. The blade comprises a plate 120 carrying a full boss 22 on which the overmolded seal 74 comes. From the common plate 120 is connected a portion 121, to which is connected a portion 122 in the form of an inverted rounded U ending in a part 124 bearing on the bottom 7 of the cartridge. The blade symmetrically presents the same parts from the common tray. The blade comprises a ring 125 connecting the symmetrical portions 124 at their base. This ring 125 is able to come into contact with the bottom 7 of the cartridge and allows the device to be centered in the cartridge.

Les figures 33 à 36 présentent un dispositif semblable au dispositif des figures 31 et 32, les mêmes références désignent des éléments en commun. On désignera par le plan AA le plan de la figure 33 dans lequel s'étendent les parties symétriques de la lame. En plus de l'anneau 125, le dispositif comprend deux barres 130 et 132 parallèles entre-elles et chacune positionnée entre une partie 121 et une partie 122 d'une branche de la lame. Chaque barre s'étend dans un plan perpendiculaire au plan AA. Ces deux barres sont de longueur telle qu'une fois le dispositif en place dans la cartouche, les extrémités de ces barres touchent la paroi latérale 5 de la cartouche et sont propres à glisser le long de cette paroi latérale. Ainsi, ces barres servent de guides latéraux au dispositif lorsqu'une force exercée par une pointe repousse le joint de la partie perforable 11 de la cartouche et lorsque le dispositif repousse le joint contre la partie perforable en exerçant une force de rappel.The Figures 33 to 36 present a device similar to the device of the Figures 31 and 32 , the same references designate elements in common. Plan AA will designate the plan of figure 33 in which the symmetrical parts of the blade extend. In addition to the ring 125, the device comprises two bars 130 and 132 parallel to each other and each positioned between a portion 121 and a portion 122 of a branch of the blade. Each bar extends in a plane perpendicular to the plane AA. These two bars are of such length that once the device in place in the cartridge, the ends of these bars touch the side wall 5 of the cartridge and are fit to slide along this side wall. Thus, these bars serve as lateral guides to the device when a force exerted by a tip pushes the seal of the pierceable portion 11 of the cartridge and when the device pushes the seal against the pierceable portion by exerting a restoring force.

Les figures 37 à 40 présentent un dispositif semblable au dispositif des figures 33 à 36, les mêmes références désignent des éléments en commun. Le dispositif des figures 37 à 40 ne comporte pas deux barres mais une barre 134 positionnée contre le plateau 120 sur la face inférieure de la lame. La barre s'étend dans un plan perpendiculaire au plan AA. Cette barre est de longueur telle qu'une fois le dispositif en place dans la cartouche, les extrémités de cette barre touchent la paroi supérieure 3 de la cartouche et sont aptes à glisser le long des parties latérales de cette paroi supérieure 3 pour guider latéralement le dispositif d'une façon similaire de celle des barres des figures 34 à 37.The Figures 37 to 40 present a device similar to the device of the Figures 33 to 36 , the same references designate elements in common. The device of Figures 37 to 40 does not have two bars but a bar 134 positioned against the plate 120 on the underside of the blade. The bar extends in a plane perpendicular to the plane AA. This bar is of such length that once the device is in place in the cartridge, the ends of this bar touch the upper wall 3 of the cartridge and are able to slide along the lateral parts of this upper wall 3 to laterally guide the device in a similar way to that of the bars of Figures 34 to 37 .

Dans les réalisations précédentes, la lame peut être réalisée par exemple en métal ou en plastique.In the previous embodiments, the blade can be made for example of metal or plastic.

Les figures 41 à 43 décrivent une première réalisation d'un socle support.The Figures 41 to 43 describe a first embodiment of a support base.

Le socle support PS1 comprend un socle de maintien 157 constitué d'un anneau de base 148 propre à venir en contact avec le fond 7 de la cartouche, de montants latéraux 159 pouvant être inclinés vers l'intérieur du socle comme représenté sur les figures 41 à 43 et d'un anneau supérieur 158. Les montants latéraux s'étendent de l'anneau de base 148 vers l'anneau supérieur 158. Trois branches 140, 141, 142 d'une lame s'étendent sous forme ondulée depuis le socle de maintien 157 jusqu'en un bossage central 146 supportant le joint (non représenté), chaque branche étant solidaire du socle de maintien, plus particulièrement de l'anneau supérieur 158, les branches se rejoignant au bossage central 146. Plus précisément, les trois branches se rejoignent en un cylindre 144 supportant le bossage central 146. Le joint est propre à venir en contact étanche autour de la partie perforable 11 de la cartouche. La forme ondulée des branches permet à ces dernières d'être flexibles élastiquement et d'exercer une force de rappel appliquant de manière étanche le joint contre la paroi supérieure de la cartouche, le bossage central portant le joint étant ainsi propre à s'écarter sous l'action d'un organe de poussée introduit à travers la partie perforable pour séparer le joint de la paroi supérieure 3. Des lames flexibles 150, 151, 152 sont solidaires du socle de maintien, plus particulièrement de l'anneau supérieur 158, et s'étendent en direction du bossage central 146. Les extrémités libres recourbées des lames flexibles viennent en contact contre la paroi supérieure 3 autour de la partie perforable 11 de la cartouche et entourent ainsi le joint. Chaque lame 150, 151, 152 est intercalée entre deux branches. Les lames flexibles 150, 151, 152 sont soutenues par des renforts 154 respectifs à l'intérieur du socle de maintien 157, ces renforts s'étendant depuis l'anneau supérieur 148 jusqu'aux extrémités libres recourbées des lames flexibles 150, 151, 152.The support base PS1 comprises a holding base 157 consisting of a base ring 148 adapted to come into contact with the bottom 7 of the cartridge, side uprights 159 that can be inclined towards the inside of the base as shown in FIGS. Figures 41 to 43 and an upper ring 158. The lateral uprights extend from the base ring 148 to the upper ring 158. Three branches 140, 141, 142 of a blade extend in undulating form from the holding base 157 to a central boss 146 supporting the seal (not shown), each leg being integral with the holding base, more particularly the upper ring 158, the branches joining the central boss 146. More specifically, the three branches are join in a cylinder 144 supporting the central boss 146. The seal is clean to come into sealing contact around the pierceable portion 11 of the cartridge. The undulating shape of the branches allows the latter to be elastically flexible and to exert a restoring force sealingly applying the seal against the upper wall of the cartridge, the central boss bearing the seal being thus clean to move away under the action of a thrust member introduced through the pierceable part to separate the seal from the upper wall 3. Flexible blades 150, 151, 152 are integral with the holding base, more particularly the upper ring 158, and extend towards the central boss 146. The curved free ends of the flexible blades come into contact against the upper wall 3 around the pierceable portion 11 of the cartridge and thus surround the seal. Each blade 150, 151, 152 is interposed between two branches. The flexible blades 150, 151, 152 are supported by respective reinforcements 154 inside the holding base 157, these reinforcements extending from the upper ring 148 to the free curved ends of the flexible blades 150, 151, 152 .

Dans cette réalisation, les montants latéraux 159 sont de même largeur que les branches 140, 141, 142 et les lames 150, 151, 152 et sont placés dans le prolongement de ces dernières.In this embodiment, the lateral uprights 159 are of the same width as the branches 140, 141, 142 and the blades 150, 151, 152 and are placed in the extension thereof.

Les figures 44 à 46 décrivent une deuxième réalisation d'un socle support.The Figures 44 to 46 describe a second embodiment of a support base.

Le socle support PS2 comprend un socle de maintien 167 constitué d'un anneau de base 168 propre à venir en contact avec le fond 7 de la cartouche, de montants latéraux 189 pouvant être inclinés vers l'intérieur du socle comme représenté sur les figures 44 à 46 et d'un anneau supérieur 188. Les montants latéraux s'étendent de l'anneau de base 168 vers l'anneau supérieur 188. Trois branches 160, 161, 162 d'une lame s'étendent depuis le socle de maintien 167 jusqu'en un bossage central 166 supportant le joint (non représenté), chaque branche étant solidaire du socle de maintien, et plus particulièrement de l'anneau supérieur 188. Les trois branches sont en forme de secteurs angulaires dont les sommets se situent sur le bossage central 166. Plus précisément, les trois branches se rejoignent en un plateau circulaire 164 supportant le bossage central 166. Le joint est propre à venir en contact étanche autour de la partie perforable 11 de la cartouche. La forme ondulée des branches permet à ces dernières d'être flexibles élastiquement et d'exercer une force de rappel appliquant de manière étanche le joint contre la paroi supérieure de la cartouche, le bossage central portant le joint étant ainsi propre à s'écarter sous l'action d'un organe de poussée introduit à travers la partie perforable pour séparer le joint de la paroi supérieure 3. Des lames flexibles 180, 181, 182 sont solidaires du socle de maintien, plus particulièrement de l'anneau supérieur 188, et s'étendent en direction du bossage central 166. Leur extrémité libre recourbée vient en contact contre la paroi supérieure 3 autour de la partie perforable 11 de la cartouche et entourent ainsi le joint. Chaque lame flexible 180, 181, 182 est intercalée entre deux branches. Les lames flexibles 180, 181, 182 sont soutenues par des renforts 184 respectifs à l'intérieur du socle de maintien 167, ces renforts s'étendant depuis l'anneau supérieur 188 jusqu'aux extrémités libres recourbées des lames flexibles 180, 181, 182.The PS2 support base comprises a holding base 167 consisting of a base ring 168 adapted to come into contact with the bottom 7 of the cartridge, side uprights 189 that can be inclined towards the inside of the base as shown in FIGS. Figures 44 to 46 and an upper ring 188. The lateral uprights extend from the base ring 168 to the upper ring 188. Three branches 160, 161, 162 of a blade extend from the holding base 167 until in a central boss 166 supporting the seal (not shown), each branch being secured to the holding base, and more particularly to the upper ring 188. The three branches are in the form of angular sectors whose vertices are located on the central boss 166. Specifically, the three branches meet in a circular plate 164 supporting the central boss 166. The seal is able to come into sealing contact around the pierceable portion 11 of the cartridge. The undulating shape of the branches allows the latter to be elastically flexible and to exert a restoring force sealingly applying the seal against the upper wall of the cartridge, the central boss bearing the seal being thus clean to move away under the action of a thrust member introduced through the pierceable part to separate the seal from the upper wall 3. Flexible blades 180, 181, 182 are integral with the holding base, more particularly the upper ring 188, and extend towards the central boss 166. Their curved free end comes into contact against the upper wall 3 around the pierceable portion 11 of the cartridge and thus surround the seal. Each flexible blade 180, 181, 182 is interposed between two branches. The flexible blades 180, 181, 182 are supported by respective reinforcements 184 inside the holding base 167, these reinforcements extending from the upper ring 188 to the curved free ends of the flexible blades 180, 181, 182.

Dans les réalisations des figures 41 à 46, l'anneau de base a un diamètre tel qu'il vient en contact contre la paroi latérale périphérique 5 de la cartouche et sert ainsi d'anneau de centrage du dispositif dans la cartouche.In the achievements of Figures 41 to 46 , the base ring has a diameter such that it comes into contact against the peripheral side wall 5 of the cartridge and thus serves as a centering ring of the device in the cartridge.

Les figures 47 et 48 décrivent une troisième réalisation d'un socle support.The Figures 47 and 48 describe a third embodiment of a support base.

Le socle support PS3 comprend un socle de maintien 197 constitué d'un anneau de base 208 propre à venir en contact avec le fond 7 de la cartouche, de montants latéraux 199 pouvant être inclinés vers l'extérieur du socle comme représenté sur les figures 47 et 48 et d'un anneau supérieur 188. Dans cette réalisation, l'anneau supérieur est propre à venir en contact contre la paroi latérale périphérique 5 de la cartouche comme représenté sur la figure 48 et sert ainsi d'anneau de centrage du dispositif dans la cartouche. Les montants latéraux s'étendent de l'anneau de base 208 vers l'anneau supérieur 198. Trois branches 190, 191, 192 d'une lame s'étendent depuis le socle de maintien 197 jusqu'en un bossage central 196 supportant le joint (non représenté), chaque branche étant solidaire du socle de maintien, plus particulièrement de l'anneau de base 208. Plus précisément, les trois branches se rejoignent en un cylindre 194 supportant le bossage central 196. Le joint est propre à venir en contact étanche autour de la partie perforable 11 de la cartouche. La forme ondulée des branches permet à ces dernières d'être flexibles élastiquement et d'exercer une force de rappel appliquant de manière étanche le joint contre la paroi supérieure de la cartouche, le bossage central portant le joint étant ainsi propre à s'écarter sous l'action d'un organe de poussée introduit à travers la partie perforable pour séparer le joint de la paroi supérieure.The PS3 support base comprises a holding base 197 consisting of a base ring 208 adapted to come into contact with the bottom 7 of the cartridge, lateral uprights 199 that can be inclined outwards of the base as shown in FIGS. Figures 47 and 48 and an upper ring 188. In this embodiment, the upper ring is adapted to come into contact with the peripheral side wall 5 of the cartridge as shown in FIG. figure 48 and thus serves as a centering ring of the device in the cartridge. The lateral uprights extend from the base ring 208 to the upper ring 198. Three branches 190, 191, 192 of a blade extend from the holding base 197 to a central boss 196 supporting the seal (Not shown), each branch being integral with the holding base, more particularly the base ring 208. More specifically, the three branches meet in a cylinder 194 supporting the central boss 196. The seal is clean to come into contact sealed around the pierceable portion 11 of the cartridge. The undulating shape of the branches allows the latter to be elastically flexible and to exert a restoring force sealingly applying the seal against the upper wall of the cartridge, the central boss bearing the seal being thus clean to move away under the action of a thrust member introduced through the pierceable portion to separate the seal of the upper wall.

Dans toute la description précédente, le dispositif de sécurité comprend une pièce support qui est le terme générique pour désigner une lame ou un socle support (PS1, PS2 et PS3) comprenant également une lame. Une "pièce support" désigne donc une pièce propre à porter le joint et à venir en appui contre la surface interne de la cartouche. Le terme "pièce support" ne désigne qu'une seule pièce, ou une combinaison de pièces fixes entre-elles avant et après montage du dispositif dans la cartouche.Throughout the foregoing description, the safety device comprises a support piece which is the generic term for a blade or a support base (PS1, PS2 and PS3) also comprising a blade. A "support piece" therefore designates a clean part to carry the seal and to bear against the inner surface of the cartridge. The term "support piece" designates only one part, or a combination of fixed parts between them before and after mounting the device in the cartridge.

Les variantes de joints décrites peuvent se combiner aux variantes de pièces support décrites.The described joint variants can be combined with the described support part variants.

Bien entendu, l'invention n'est pas limitée aux formes des réalisations décrites mais s'étend à d'autres variantes de réalisation.Of course, the invention is not limited to the forms of embodiments described but extends to other embodiments.

Dans la première réalisation du dispositif de sécurité, la lame peut prendre appui contre la paroi supérieure bombée, les enfoncements pouvant être réalisés par exemple à la base de cette paroi supérieure bombée.In the first embodiment of the safety device, the blade can bear against the curved upper wall, the recesses can be made for example at the base of the curved upper wall.

L'invention couvre toutes les combinaisons de joints et de pièces support présentés à titre d'exemple dans la description de façon à réaliser un dispositif de sécurité selon l'invention. L'invention couvre également des formes de pièces support différentes de celles présentées mais assurant la même fonction de ressort au dispositif de sécurité, c'est-à-dire la même fonction d'exercice d'une force de rappel sur le joint.The invention covers all combinations of joints and support pieces presented by way of example in the description so as to provide a safety device according to the invention. The invention also covers forms of support parts different from those presented but providing the same spring function to the safety device, that is to say the same function of exercising a restoring force on the seal.

Claims (30)

  1. Disposable pressurised cartridge of fluid (1) comprising a base (7), a peripheral side wall (5) and an upper wall (3) comprising a puncturable part (11), and provided on the inside with a safety device adapted to prevent the escape of fluid under pressure after puncture, characterised in that the safety device (12, 40, 50, 60, 70, 80, 90) comprises a resiliently flexible support member (15, 41, 51, 61, 71, 81, 91, PS1, PS2, PS3) carrying a joint (14, 3, 44, 64), the said support member having at least two bearing points spaced from one another so as to bear on at least one internal wall (3, 5, 7) and exert a recoil force which presses the joint tightly against the upper wall, around the said puncturable part (11), the said support member being adapted to move away under the effect of a perforating member, introduced through said puncturable part, which passes through the joint and bears on the support member, in order to separate the joint from the upper wall.
  2. Disposable pressurised fluid cartridge according to claim 1, characterised in that the support member comprises a thin strip.
  3. Disposable pressurised fluid cartridge according to claim 2, characterised in that the joint is an overmoulded joint (14, 44, 64) on the strip, the upper part of the joint, which is adapted to be pressed against the upper wall (3), exposing a region of the upper surface of the strip.
  4. Disposable pressurised fluid cartridge according to claim 3, characterised in that the strip (15, 61, 71) comprises a boss (20, 22) onto which the overmoulded joint is placed, the upper part of the joint exposing the upper surface of the strip in the region of the boss.
  5. Disposable pressurised fluid cartridge according to one of claims 3 and 4, characterised in that the upper part of the joint comprises a crown having at least one end that is in tight contact with the upper wall.
  6. Disposable pressurised fluid cartridge according to claim 2, characterised in that the strip (15) comprises a dish (30) on its upper surface adapted to accommodate the joint which is of toroidal configuration (32).
  7. Disposable pressurised fluid cartridge according to claim 6, characterised in that the dish has a seat (33) adapted to accommodate the toroidal joint and a concentric central well (35) that is deeper than the seat (33).
  8. Disposable pressurised fluid cartridge according to one of the preceding claims, characterised in that the support member (15, 41, 51, 61, 71, 81) is made of plastics.
  9. Disposable pressurised fluid cartridge according to one of claims 1 to 4, characterised in that the support member (15, 41, 51, 61, 71, 81, 91) is made of metal.
  10. Disposable pressurised fluid cartridge according to one of claims 3 to 9, characterised in that the strip (15) comprises at each end attachment means (16, 19) that are complementary to recesses (34) provided opposite in the peripheral side wall (5) of the cartridge and at a spacing from the base (7) of the cartridge, these recesses (34) being formed without projecting towards the outside of the cartridge and these attachment means (16,19) being adapted to cooperate with these recesses to define said bearing points.
  11. Disposable pressurised fluid cartridge according to one of claims 2 to 9, characterised in that the strip (71) comprises at each end attachment means (75) that are complementary to recesses (73) provided opposite in the peripheral side wall (5) of the cartridge and at a spacing from the base (7) of the cartridge, these recesses (73) being formed to project towards the outside of the cartridge and these attachment means (75) being adapted to cooperate with these recesses to define said bearing points.
  12. Disposable pressurised fluid cartridge according to one of claims 10 and 11, characterised in that in the released state of the strip (15, 71) the spacing between the attachment means is greater than the spacing between the corresponding recesses (34, 73) so that the strip (15, 71) is bent in order to exert the said recoil force when the attachment means are cooperating with the recesses.
  13. Disposable pressurised fluid cartridge according to one of claims 2 to 9, characterised in that the strip (61) comprises at least two symmetrical arms on either side of the joint, each arm of the strip (66) being bent on either side of a bending point and comprising a raised end (65) adapted to cooperate with a recess (63) formed at least partly in the peripheral side wall (5) of the cartridge and at a spacing from the base (7) of the cartridge in order to define the said bearing points, each recess (34) being formed without projecting towards the outside of the cartridge.
  14. Disposable pressurised fluid cartridge according to claim 13, characterised in that in the released state of the strip (61) the spacing between the raised ends (65) is greater than or equal to the spacing between the corresponding recesses (63) so that the strip (61) is bent in order to exert the said recoil force when the raised ends (65) are cooperating with the recesses (63).
  15. Disposable pressurised fluid cartridge according to one of claims 2 to 10, characterised in that the strip (15) comprises a generally U-shaped curved part (18) forming a spring.
  16. Disposable pressurised fluid cartridge according to one of claims 2 to 9, characterised in that the strip (51) comprises two symmetrical arms on either side of the joint, each arm of the strip being bent so as to at least partly follow the inner shape of the cartridge down to the base (7), the end (58, 106) of each arm of the strip being adapted to bear on the base (7) of the cartridge and forming one of said bearing points.
  17. Disposable pressurised fluid cartridge according to claim 16, characterised in that each arm of the strip comprises a generally U-shaped bent part (54, 56, 102, 112, 122) forming a spring.
  18. Disposable pressurised fluid cartridge according to one of claims 16 and 17, characterised in that each bent part (54, 56, 102, 112, 122) is followed by a hinge (110) connecting the bent part to a part (104, 114) extending towards the base (7) of the cartridge.
  19. Disposable pressurised fluid cartridge according to one of claims 16 to 18, characterised in that the strip comprises a ring (125) that connects the ends (124) of the arms of the strip.
  20. Disposable pressurised fluid cartridge according to one of claims 16 to 19, characterised in that the strip comprises at least one bar the length and position of which are such that its ends touch the peripheral side wall (5) of the cartridge and are adapted to slide along this wall under the effect of the thrust member acting on the strip.
  21. Disposable pressurised fluid cartridge according to one of claims 16 to 19, characterised in that the strip comprises a bar the length and position of which are such that its ends touch the upper wall (3) and are adapted to slide along this wall under the effect of the thrust member acting on the strip.
  22. Disposable pressurised fluid cartridge according to one of claims 2 to 9, characterised in that the strip (81) comprises two symmetrical arms (84) on either side of the joint, each part of the strip being bent in an undulating manner and terminating in an end (83), each end being adapted to be inserted opposite in at least one groove (82) produced by folding back the upper wall of the cartridge, so as to form one of said bearing points.
  23. Disposable pressurised fluid cartridge according to claim 22, characterised in that each arm (84) of the strip is folded to form a dovetail and in that the two ends are adapted to be inserted in the same annular groove surrounding the puncturable part (11).
  24. Disposable pressurised fluid cartridge according to one of claims 2 to 9, characterised in that the strip (91) comprises two symmetrical arms (94) on either side of the joint, each arm of the strip being bent in an undulating manner and terminating in an end (92), each end being adapted to be attached to the upper wall (3) of the cartridge, so as to form one of said bearing points.
  25. Disposable pressurised fluid cartridge according to claim 24, characterised in that each arm (94) of the strip is bent into a general U-shape and in that the two ends (92) of the strip are welded to the upper wall (3) of the cartridge.
  26. Disposable pressurised fluid cartridge according to one of claims 10 to 14, characterised in that the strip comprises three arms emanating from the joint in a star shape.
  27. Disposable pressurised fluid cartridge according to one of claims 2 to 9, characterised in that the joint (44) is located close to a first end (42) of the strip.
  28. Disposable pressurised fluid cartridge according to claim 27, characterised in that starting from the first end (42) the strip (41) is folded so as to follow the inner shape of the cartridge down to its base (7), the strip having a first bend (46) adapted to bear on a first zone of the base and forming the first bearing point and a second bend (48) adapted to bear on a second zone of the base and forming the second bearing point, the first and second zones being opposite, in relation to the centre of the base (7) of the cartridge.
  29. Disposable pressurised fluid cartridge according to one of claims 1 to 9, characterised in that the support member is a support pedestal (PS1, PS2, PS3) comprising a holding pedestal (157, 167, 197) forming a base adapted to bear on the base (7) of the cartridge, at least two arms (140, 141; 160, 161; 190, 191) of a strip extending from the holding pedestal (157, 167, 197) and joining together at a central boss (146, 166, 196) supporting the joint, each arm being integral with the holding pedestal.
  30. Disposable pressurised fluid cartridge according to claim 29, characterised in that at least two flexible strips (150, 151; 180, 181; 190, 191) integral with the holding pedestal extend towards and around the central boss and come into contact around the puncturable part (11) of the cartridge.
EP03292433A 2002-10-03 2003-10-02 Security device for puncturable cartridge Expired - Lifetime EP1406041B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0212274 2002-10-03
FR0212274A FR2845456B1 (en) 2002-10-03 2002-10-03 SAFETY DEVICE FOR PERFORABLE CARTRIDGE

Publications (3)

Publication Number Publication Date
EP1406041A2 EP1406041A2 (en) 2004-04-07
EP1406041A3 EP1406041A3 (en) 2006-10-04
EP1406041B1 true EP1406041B1 (en) 2010-03-17

Family

ID=31985426

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03292433A Expired - Lifetime EP1406041B1 (en) 2002-10-03 2003-10-02 Security device for puncturable cartridge

Country Status (7)

Country Link
EP (1) EP1406041B1 (en)
AT (1) ATE461397T1 (en)
DE (1) DE60331715D1 (en)
DK (1) DK1406041T3 (en)
ES (1) ES2342882T3 (en)
FR (1) FR2845456B1 (en)
PT (1) PT1406041E (en)

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EP2803897A2 (en) 2013-05-13 2014-11-19 Providus S.r.l. A perforable cartridge for liquefied gas with a safety device

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FR2942863B1 (en) 2009-03-03 2013-04-19 Guilbert Express Sa PERFORATED CARTRIDGE ANTI-LEAK.
PL2913578T3 (en) * 2014-02-26 2020-04-30 El Gaz S.A. Gas cartridge with safety system
ES2664448T3 (en) 2015-03-27 2018-04-19 Marco Raviolo Perforable cartridge for liquefied gas provided with a safety device
GR1008914B (en) * 2015-06-03 2016-12-21 Παναγιωτης Σταυρου Νατσης Crown hindering the liquid gas from escaping from gas cylinders
IT201600086921A1 (en) * 2016-08-24 2018-02-24 Special Components S R L GAS BOTTLE
GR1009475B (en) * 2017-09-14 2019-02-28 Ιωαννης Δημητριου Κοπανος Device for automatic gas escape interruption
GR20180100278A (en) * 2018-06-26 2020-02-13 IGM ΤΕΧΝΙΚΗ-ΕΜΠΟΡΙΚΗ ΕΤΑΙΡΕΙΑ ΠΕΡΙΟΡΙΣΜΕΝΗΣ ΕΥΘΥΝΗΣ με δ.τ."IGM ΕΠΕ" Liquid gas flow restrictor for little gas canisters
IT201800009658A1 (en) * 2018-10-22 2020-04-22 Special Components Srl SAFETY VALVE FOR ONE GAS BOTTLE AND GAS BOTTLE INCLUDING THIS VALVE
IT202100004934A1 (en) 2021-03-03 2022-09-03 Plein Air Int S R L CARTRIDGE FOR A FLUID UNDER PRESSURE
IT202100014129A1 (en) * 2021-05-31 2022-12-01 Plein Air Int S R L Pressurized fluid cartridge
GR1010269B (en) * 2022-01-11 2022-07-20 Nertil Alush Abdulaj Gas escape restriction arrangement practicable for liquid gas cylinders

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1170436B (en) * 1961-12-06 1964-05-21 Gaz De Petrole Container for liquefied fuel gases
NL286386A (en) * 1961-12-06
FR1433490A (en) * 1965-02-10 1966-04-01 Applic Gaz Sa Improvements to flow limiting devices, in particular for liquefied gas cartridges

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2803897A2 (en) 2013-05-13 2014-11-19 Providus S.r.l. A perforable cartridge for liquefied gas with a safety device

Also Published As

Publication number Publication date
FR2845456A1 (en) 2004-04-09
ATE461397T1 (en) 2010-04-15
FR2845456B1 (en) 2005-01-14
EP1406041A2 (en) 2004-04-07
EP1406041A3 (en) 2006-10-04
DK1406041T3 (en) 2010-06-28
ES2342882T3 (en) 2010-07-16
PT1406041E (en) 2010-05-25
DE60331715D1 (en) 2010-04-29

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