EP0591365B1 - Vorrichtung zum Spritzen einer vorbestimmten Dosis eines Mediums und Verfahren zum Füllen dieser Vorrichtung - Google Patents

Vorrichtung zum Spritzen einer vorbestimmten Dosis eines Mediums und Verfahren zum Füllen dieser Vorrichtung Download PDF

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Publication number
EP0591365B1
EP0591365B1 EP92913803A EP92913803A EP0591365B1 EP 0591365 B1 EP0591365 B1 EP 0591365B1 EP 92913803 A EP92913803 A EP 92913803A EP 92913803 A EP92913803 A EP 92913803A EP 0591365 B1 EP0591365 B1 EP 0591365B1
Authority
EP
European Patent Office
Prior art keywords
piston
tank
further characterized
cylindrical
pusher
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
EP92913803A
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English (en)
French (fr)
Other versions
EP0591365A1 (de
Inventor
Philippe Résidence Vallon Saint-Hilaire SOLIGNAC
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.)
Aptar France SAS
Original Assignee
Valois SAS
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
Priority claimed from FR9107854A external-priority patent/FR2678243B3/fr
Priority claimed from FR9108624A external-priority patent/FR2678906B1/fr
Application filed by Valois SAS filed Critical Valois SAS
Publication of EP0591365A1 publication Critical patent/EP0591365A1/de
Application granted granted Critical
Publication of EP0591365B1 publication Critical patent/EP0591365B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0027—Means for neutralising the actuation of the sprayer ; Means for preventing access to the sprayer actuation means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
    • B05B11/0064—Lift valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
    • B05B11/007—Outlet valves actuated by the pressure of the fluid to be sprayed being opened by deformation of a sealing element made of resiliently deformable material, e.g. flaps, skirts, duck-bill valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0097—Means for filling or refilling the sprayer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/02—Membranes or pistons acting on the contents inside the container, e.g. follower pistons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001—Piston pumps
    • B05B11/1023—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001—Piston pumps
    • B05B11/1023—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem
    • B05B11/1025—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem a spring urging the outlet valve in its closed position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001—Piston pumps
    • B05B11/1023—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem
    • B05B11/1026—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem the piston being deformable and its deformation allowing opening of the outlet

Definitions

  • the present invention relates to a device for spraying a predetermined dose of a fluid product, and to its filling method. More particularly, the invention relates to a device containing a single dose of product and disposable after emission of this dose.
  • the product to be sprayed can be a drug, a cosmetic or the like.
  • the device according to the invention is more specifically intended for nasal sprays, but could be used for other purposes: ear, sublingual sprays, etc.
  • the single dose can optionally be divided into several sub-doses, as disclosed in document EP-A-0 311 863.
  • the object of the present invention is in particular to avoid this drawback, without significantly increasing the cost of the device, which is disposable after a single actuation.
  • the pusher comprises a cylindrical part which extends between an end close to the cylindrical tank and a stop more distant from the cylindrical tank, said end close to the product tank is secured to a crown , said product outlet passage is disposed at least partially inside said cylindrical part, said pusher, said product outlet passage opens out of said cylindrical part between said ring and said stopper, in the vicinity of said ring, the piston comprises an internal sleeve which slides on said cylindrical part of the pusher, and said piston is in sealed contact with said crown when it is in its storage position.
  • the piston has an outer peripheral sealing lip which slides in leaktight manner in the cylindrical tank and which is wedged between the tank and the crown when the piston is in its storage position.
  • the crown comprises an annular rib directed towards the piston
  • the piston comprises an annular groove adapted to receive the rib of the crown
  • the piston comprises an annular rib directed towards the crown and inside said annular groove
  • the crown has an annular groove adapted to receive the annular rib of the piston.
  • the crown may include at least one passage which communicates the reservoir with the groove called the piston when said piston is in its storage position, and the rib of the piston is then in sealed contact with the groove of the crown.
  • the cylindrical reservoir has a bottom and the crown has a face directed towards said bottom and having a shape substantially complementary to said bottom, and said face of the crown bitted against said bottom at the end of the piston stroke, so that substantially all of the product contained in the tank is expelled.
  • the piston can optionally be urged towards its storage position by elastic means.
  • the internal sleeve said piston can be in abutment against the stop bed of the pusher when the piston is in its storage position, and the displacement said piston towards its actuation position is then made by deformation of at least a part of said internal sleeve.
  • the internal sleeve of the piston then has longitudinal slots over a part of its length in the vicinity of said stop of the actuating means, so as to facilitate the deformation of said internal sleeve.
  • the said piston sleeve can be applied in sealed contact against said stop of the pusher when the piston is in its actuation position.
  • said abutment has a concave annular surface surrounding the cylindrical wall and of concavity directed towards the sleeve, and said concave annular surface deforms radially inward a free end of said sleeve when the piston is in its actuation position.
  • the so-called piston sleeve can slide with sealing on the cylindrical wall of the pusher.
  • the piston has a cylindrical part which slides on a complementary cylindrical part of the crown while maintaining cut off the communication between the cylindrical reservoir and the product outlet passage as long as the piston has not moved away from the crown from a predetermined distance.
  • the cylindrical product reservoir has a filling orifice capable of receiving a stopper ball, and said orifice is extended towards the outside of the reservoir by a duct provided with longitudinal slots, said ball can be forced into said conduit in an intermediate position where it allows the communication of the tank with the outside via said longitudinal slots.
  • the device may include an elastic means which biases the piston towards its closed position.
  • said piston at rest, is in sealed contact with said crown along a peripheral line close to the cylindrical wall of the reservoir so that only a radially outer part of the piston is initially exposed to the pressure prevailing in the reservoir , so that the section of the piston which is exposed to the pressure prevailing in the tank increases suddenly when the piston separates from the crown, which promotes a clear opening of the communication between the tank and the outlet passage.
  • the locking means which immobilize the pusher axially with respect to the reservoir.
  • said locking means are unlockable by a rotation of the pusher relative to the reservoir.
  • the locking means remain locked in the unlocked position after they have been unlocked.
  • the means may consist of at least one bridge of breakable material between the pusher and the reservoir.
  • it includes means for preventing its involuntary actuation.
  • it comprises at least one zone of breakable material which forms a stop which opposes actuation and which is broken during actuation.
  • said means comprise latching means which are in the latched position at least when the device is in its rest position.
  • said latching means are also in the latched position when the device is in its end of actuation position.
  • Figures 1 to 4 show a first embodiment of the device according to the invention.
  • This device is intended to project a single dose of fluid, generally of the order of a few milliliters.
  • the device of the invention is therefore small, and measures a few centimeters in its largest dimension. It is generally made of plastic.
  • the device comprises a pusher 3 provided with an outlet nozzle 18 having an enlarged base 19 from which extends radially outward a support surface 20 extended by a skirt 21.
  • a pump body 22 comprising support wings 23 adapted to slide in said skirt 21.
  • the device can be actuated by being held between the thumb and one or two fingers , the thumb being applied against the support wings 23 and the other fingers being applied against the support surface 20.
  • the skirt 21 generally has a recess 24 allowing the passage of the thumb.
  • the pump body 22 comprises a cylindrical reservoir 1 which extends between an open end 25 and a bottom 16 provided with a filling orifice 26.
  • the filling orifice 26 can be closed by a ball 27 force-fitted into said orifice, or by any other means of sealing.
  • the skirt 21 of the pusher 3 has at its free end an internal snap-on lip 28 which makes it possible to maintain said support wings 23 inside said skirt 21.
  • the enlarged base 19 of the outlet nozzle 18 is constituted by a cylindrical wall 29 arranged around the cylindrical tank 1, and which extends between the bearing surface 20 and an annular wall 9 which itself extends radially inwards to the outlet end piece 18.
  • the outlet end piece 18 extends between said annular wall 9 and an outlet end 30 comprising an outlet opening 6.
  • the outlet end piece 18 is hollow, and extends over a certain distance inside the cylindrical wall 29 of the enlarged base 19, by a cylindrical wall 7 which extends to one end 8.
  • the outlet nozzle 18 and the cylindrical wall 7 define a cylindrical longitudinal channel 31 which communicates with the outlet orifice 6.
  • a rod 4 also cylindrical is force fitted into the longitudinal channel 31.
  • the rod 4 extends from a first end 32 placed in contact with the outlet end 30 of the outlet nozzle 18, up to beyond end 8 of the cylindrical wall 7, where said rod 4 is extended radially outward by a ring 10.
  • the rod 4 has over its entire height one or more external grooves 5 which communicate with the outlet orifice 6, generally by grooves formed on the first end 32 of the rod 4, in a well known manner.
  • the device of the invention further comprises a piston 2 which slides in the cylindrical tank 1, and which can slide on the cylindrical wall 7 of the pusher between the ring 10 and the annular wall 9 forming a stop.
  • the piston 2 includes an internal sleeve 11 which extends to a free end 43 close to the annular wall 9 of the pusher, and which slides on the cylindrical wall 7 of the pusher.
  • the piston 23 has an outer skirt 33 which slides in leaktight manner in the cylindrical tank 1.
  • FIG. 3 represents in detail the structure of the piston 2 and of the crown 10.
  • the crown 10 comprises an annular rib 12 directed towards the piston, and the piston 2 comprises an annular groove 13 disposed opposite the annular rib 12.
  • the groove annular 13 of the piston is delimited externally by an outer peripheral sealing lip 34 of the skirt 33, which slides in sealed contact in the cylindrical tank 1, and by a rib 14.
  • the crown 10 further comprises a groove 15 adapted to receive said rib 14.
  • the piston 2 When mounting the device, the piston 2 is first assembled on the crown 10 by fitting the annular rib 12 into the groove 13. Then the rod 4 is force-fitted into the longitudinal channel 31 of the pusher and the piston 2 is introduced into the cylindrical reservoir 1.
  • the cylindrical reservoir 1 advantageously comprises an internal chamfer 41 at its end opened. When the sealing lip 34 is introduced into the chamfer 41, it is gradually deformed radially inwards, so that it comes to tighten the rib 12 which is thus compressed between the rib 14 and the lip 34.
  • the contact between the lip 34 and the rib 12 is not sealed, since the crown 40 has one or more slots 40 at its outer periphery, which make the reservoir of product 1 with groove 13 of the piston.
  • the seal between the piston 2 and the crown 10 is ensured by the contact between the rib 14 and the groove 15. This seal is reinforced by the radial tightening due to the sealing lip 34, which applies the rib 12 between the rib 14.
  • the rib 14 is also wedged in the groove 15, and participates in the wedging of the piston 2 on the crown 10.
  • the slots 40 can be omitted.
  • the wedging and sealing between the piston 2 and the crown 10 could be ensured by the contact between the sealing lip 34 and the crown 10, provided that said crown 10 no longer comprises slots 40. It is then no longer necessary to provide a rib or groove on the piston 2 or the crown 10.
  • the annular wall 9 has an annular surface 42, although visible in Figure 4A, surrounding the cylindrical wall 7 and forming an acute angle with said cylindrical wall 7.
  • the free end 43 of the sleeve 11 abuts against this surface 42, so that by wedge effect, the surface 42 deforms the free end 43 of the sleeve 11 radially inward, and applies it against the cylindrical wall 7 of the pusher.
  • this deformation is accompanied by a significant pressure applied by the surface 42 on the sleeve 11.
  • the free end 43 of the sleeve 11 is in sealed contact with on the one hand the annular surface 42, and on the other hand with the cylindrical wall 7.
  • the space 35 places the cylindrical reservoir 1 in communication with the grooves 5 of the rod 4, so that the product contained in said cylindrical reservoir 1 can be expelled through the passage 35, the grooves 5 and the outlet orifice 6, while the piston 2 and the crown 10 descend into said cylindrical reservoir 1, towards the bottom 16.
  • This movement stops when the crown 10 abuts against said bottom 16.
  • the crown 10 has a face 17 directed towards the bottom 16 which has a shape substantially complementary to that of said bottom 16 and of the ball 27, so that when the crown 10 is in abutment against the bottom 16, substantially all of the product contained in the cylindrical tank 1 has been expelled. This limits the loss of part of the product contained in the cylindrical tank, which is particularly useful when the product is expensive, or when its use is regulated (case of drugs based on prohibited drugs) FIG.
  • FIG. 5 represents a variant of the device of FIG. 1, in which an elastic means such as a helical spring 36 is disposed between the annular wall of the pusher 3 and the piston 2, so as to elastically urge the piston 2 towards the crown 10.
  • an elastic means such as a helical spring 36 is disposed between the annular wall of the pusher 3 and the piston 2, so as to elastically urge the piston 2 towards the crown 10.
  • This variant can be useful in particular in the case where the volume of the dose to be projected is relatively large, and where the stroke of the piston 2 in the cylindrical reservoir 1 is relatively large. Indeed, it could be possible while a user interrupts or slows down the movement of the piston 2 in the cylindrical tank 1 during the stroke of said piston 2. In this case, the pressure inside the cylindrical tank 1 decreases, so that the helical spring 36 pushes the piston 2 towards the crown 10, again isolating the cylindrical reservoir 1 from the outlet grooves 5.
  • the piston 2 then does not separate from the crown 10 until the pressure in the cylindrical reservoir 1 has again become sufficient to overcome the force of the spring 36. This guarantees a fine spraying of the product at the outlet of the device.
  • the helical spring 36 reinforces the jamming of the piston 2 on the crown 10 when said piston is in its storage position.
  • Figures 6 and 7 show another variant of the device of the invention, in which the internal sleeve 11 of the piston 2 is placed in abutment against the annular wall 9, when the piston is in its storage position. So the displacement of the piston towards its actuating position, as shown in Figure 7, is by deformation of a portion of the inner sleeve 11 of the piston, radially outward, in the vicinity of the annular wall 9 of the pusher.
  • the ring 10 it is particularly advantageous for the ring 10 to have a cylindrical surface 44 on which a complementary cylindrical part of the piston slides with sealing. If the height of the cylindrical surface 44 is called h, the piston 2 must move away from the crown 10 by the distance h before freeing the passage between the product reservoir 1 and the outlet grooves 5. This distance h traveled by the piston corresponds to a predetermined compression of the sleeve 11 which itself corresponds to a predetermined force exerted by the sleeve 11 on the piston 2: thus, it is ensured that the product is only expelled if the pressure inside the tank 1 reaches a predetermined value, and therefore said product is sprayed finely.
  • FIG. 9 represents a variant of the device of FIGS. 6 and 7, in which the internal sleeve 11 of the piston has longitudinal slots 37 which extend over part of its length in the vicinity of the annular wall 9 of the pusher 3, so to facilitate the deformation of said internal sleeve 11.
  • the seal between the piston 2 and the pusher can no longer be ensured at the level of the annular wall 9. It is then possible to produce a peripheral sealing lip 45 between the sleeve 11 of the piston and the cylindrical wall 7 of the pusher, as shown in FIG. 10.
  • This lip 45 could be formed for example inside the sleeve 11, but could also be formed outside the cylindrical wall 7. It will be noted that the variants described above of the device of the invention could also be equipped with the sealing lip 45, replacing the sealing by abutment of the sleeve 11 against the wall 9.
  • the step of evacuating the vacuum chamber can be placed after the step of introducing into the reservoir 1 a volume of product measured externally.
  • the volume of product introduced into the tank 1 is chosen between 0 and a maximum volume. This is particularly advantageous insofar as the same spraying device according to the invention can be used to contain doses of products various, which makes it possible to produce in larger series and therefore at a lower cost.
  • the enlarged base 19 of the end piece 18 may include slots 46, which make it possible to precisely adjust the position of the reservoir 1 relative to the piston 2, in order to precisely fix the maximum volume of product which can be contained in said tank 1.
  • the slots 46 make it possible to press the piston 2 and not the pusher 3 during the positioning of said piston in the cylindrical tank 1. This prevents the piston 2 from leaving its storage position when it is put in place, due to the friction between said piston and the cylindrical tank 1.
  • the orifice 26 of the bottom 16 can be extended towards the outside by a conduit 47 provided with longitudinal slots 48.
  • the ball 27 can be partially introduced into the conduit 48 without blocking the orifice 26, which then communicates with outside by the slots 48.
  • FIGS. 12 to 14 a variant of the invention is shown which aims to guarantee more securely that the device is kept in its storage position.
  • the piston 2 is not shown, any more than the rod 4 and the crown 10.
  • the reservoir 1 has two grooves 100 in a plane perpendicular to the axis of the device, and each groove 100 communicates at one end with an axial groove 101 which moves away from the pusher 3.
  • the pusher 3 comprises two elastic arms 102 substantially axial, which each extend to a free end provided with a lug 103 which in the rest position, enters a groove 100 at its end which does not communicate with an axial groove 101. In the rest position, the pusher 3 is therefore immobilized axially, relative to the reservoir 1.
  • a welding point 104 is produced between the pusher 3 and the reservoir 1, in order to guarantee that the two parts do not move relative to each other during storage or transport, and to put clearly any opening of the device or any actuation of the device, the weld point 104 being broken during the opening or actuation.
  • the device comprises an anti-opening security which consists of elastic lugs 105 snapped into orifices 106 in the pusher when the device is in its storage position.
  • the pins have a lower face 105a whose normal is directed axially away from the outlet 30 of the pusher 3, and an inclined upper face 105b whose normal has an axial component directed towards the end piece 18 and a radial component directed towards outside.
  • the lower face 105a abuts against the wall of the pusher while preventing the reservoir 1 from being removed, while when the reservoir 1 is urged towards the outlet 30 of the pusher, the inclined face 105b pushes the lug 105 and the emerges from the orifice 106, which allows actuation.
  • the pusher 3 further comprises orifices 107 in which the lugs 105 engage when the device is in its end of actuation position, so that the reservoir 1 cannot be opened to be refilled.
  • the reservoir 1 it is advantageous for the reservoir 1 to be guided in its axial movement relative to the pusher 3, so that the pins 105 certainly penetrate into the orifices 107.
  • the pusher 3 has detachable pads 108 and the reservoir 1 has axial rods 109 in correspondence, which punch the pellets 108 by detaching them from the pusher 3 during actuation. This avoids inadvertent actuation during storage or transport, and the detachment of the pellets 108 highlights the fact that the device has already been actuated.

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  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Claims (27)

  1. Vorrichtung für die aufgeteilte Ausgabe einer einzigen Dosis eines fluiden Produkts, die mindestens aufweist:
    - einen zylindrischen Tank (1), der die Produktdosis enthält,
    - einen Kolben (2), der in diesem zylindrischen Tank (1) gleitet,
    - einen Drücker (3, 4), um den Kolben (2) zu betätigen,
    - einen Auslaßkanal (5, 6), der mit dem zylindrischen Tank (1) in Verbindung stehen kann,
    dadurch gekennzeichnet, daß der Kolben (2) gleitend auf dem Drücker (3, 4) montiert ist und in Bezug auf den Drücker (3, 4) zwischen einer Lagerstellung (Figur 1), in der er die Verbindung zwischen dem Auslaßkanal (5, 6) und dem zylindrischen Tank (1) unterbricht, und einer Betätigungsstellung (Figur 4) bewegt werden kann, in der er den Auslaßkanal (5, 6) mit dem zylindrischen Tank (1) in Verbindung bringt, wobei der Kolben so angeordnet ist, daß ein im zylindrischen Tank (1) herrschender Druck den Kolben (2) in seine Betätigungsstellung drückt, und der Kolben (2) in seiner Lagerstellung durch Verkeilen auf dem Drücker (3, 4) gehalten wird und nur dann in seine Betätigungsstellung verschoben werden kann, wenn im zylindrischen Tank (1) ein ausreichender Druck herrscht, um ihn loszukeilen, wobei der Druck erhalten wird, indem auf den Drücker (3, 4) gedrückt wird.
  2. Vorrichtung nach Anspruch 1, weiter dadurch gekennzeichnet, daß der Drücker (3, 4) einen zylindrischen Bereich (7) aufweist, der sich zwischen einem Ende (8) nahe dem zylindrischen Tank (1) und einem Anschlag (9) erstreckt, der weiter vom zylindrischen Tank (1) entfernt ist, wobei das Ende (8) nahe dem Produkttank fest mit einem Kranz (10) verbunden ist, wobei der Auslaßkanal (5, 6) des Produkts sich zumindest teilweise im Inneren des zylindrischen Bereichs (7) des Drückers befindet, wobei der Auslaßkanal des Produkts außerhalb des zylindrischen Bereichs (7) zwischen dem Kranz (10) und dem Anschlag (9) in der Nähe des Kranzes (10) mündet, wobei der Kolben (2) eine innere Muffe (11) aufweist, die auf dem zylindrischen Bereich (7) des Drückers gleitet, und der Kolben (2) mit dem Kranz (10) in dichtem Kontakt steht, wenn er sich in seiner Lagerstellung befindet.
  3. Vorrichtung nach Anspruch 2, weiter dadurch gekennzeichnet, daß der Kolben (2) eine periphere äußere Dichtlippe (34) aufweist, die dicht im zylindrischen Tank (1) gleitet und die zwischen dem Tank (1) und dem Kranz (10) eingeklemmt ist, wenn der Kolben (2) sich in seiner Lagerstellung befindet.
  4. Vorrichtung nach Anspruch 3, weiter dadurch gekennzeichnet, daß der Kranz (10) eine ringförmige Rippe (12) aufweist, die zum Kolben (2) gerichtet ist, daß der Kolben eine ringförmige Kehle (13) aufweist, die die Rippe (12) des Kranzes aufnimmt, daß der Kolben (2) eine in Bezug auf die ringförmige Kehle (13) innen liegende und zum Kranz (10) gerichtete ringförmige Rippe (14) aufweist und der Kranz (10) eine ringförmige Kehle (15) aufweist, die die ringförmige Rippe (14) des Kolbens (2) aufnimmt.
  5. Vorrichtung nach Anspruch 4, weiter dadurch gekennzeichnet, daß der Kranz (10) mindestens einen Durchlaß (40) aufweist, der den Tank (1) mit der Kehle (13) des Kolbens (2) verbindet, wenn der Kolben (2) sich in seiner Lagerstellung befindet, und daß die Rippe (14) des Kolbens mit der Kehle (15) des Kranzes (10) in dichtem Kontakt steht.
  6. Vorrichtung nach einem beliebigen der Ansprüche 2 bis 5, weiter dadurch gekennzeichnet, daß der zylindrische Tank (1) einen Boden (16) aufweist und der Kranz (10) eine zu diesem Boden (16) gerichtete und eine im wesentlichen zu diesem Boden (16) komplementäre Form aufweisende Fläche (17) besitzt, und daß die Fläche (17) des Kranzes (10) am Hubende des Kolbens (2) gegen den Boden (16) in Anschlag gerät, so daß im wesentlichen das ganze im Tank (1) befindliche Produkt ausgestoßen wird (Figur 4).
  7. Vorrichtung nach einem beliebigen der Ansprüche 2 bis 6, weiter dadurch gekennzeichnet, daß der Kolben (2) durch ein elastisches Mittel (36, 11) in seine Lagerstellung gebracht wird.
  8. Vorrichtung nach einem beliebigen der Ansprüche 2 bis 7, weiter dadurch gekennzeichnet, daß die innere Muffe (11) des Kolbens (2) gegen den Anschlag (9) des Drückers (3, 4) anliegt, wenn der Kolben (2) sich in seiner Lagerstellung befindet, und daß die Verschiebung des Kolbens (2) in seine Betätigungsstellung durch Verformung mindestens eines Teils der inneren Muffe (11) erfolgt (Figuren 7 und 8).
  9. Vorrichtung nach einem beliebigen der Ansprüche 2 bis 8, weiter dadurch gekennzeichnet, daß die Muffe (11) dicht gegen den Anschlag (9) angelegt ist, wenn der Kolben sich in seiner Betätigungsstellung befindet.
  10. Vorrichtung nach Anspruch 9, weiter dadurch gekennzeichnet, daß der Anschlag (9) eine konkave ringförmige Fläche (42) aufweist, die die zylindrische Wand (7) umgibt und deren konkave Aushöhlung zur Muffe (11) hin gerichtet ist, und daß die konkave ringförmige Fläche (42) ein freies Ende (43) der Muffe (11) radial nach innen verformt, wenn der Kolben (2) sich in seiner Betätigungsstellung befindet.
  11. Vorrichtung nach Anspruch 8, weiter dadurch gekennzeichnet, daß die innere Muffe (11) des Kolbens (2) Längsschlitze (37) auf einem Teil ihrer Länge in der Nähe des Anschlags (9) des Drückers (3, 4) aufweist, um die Verformung der inneren Muffe (11) zu vereinfachen (Figur 8).
  12. Vorrichtung nach einem beliebigen der Ansprüche 2 bis 11, weiter dadurch gekennzeichnet, daß die Muffe (11) des Kolbens (2) dicht auf der zylindrischen Wand (7) des Drückers gleitet.
  13. Vorrichtung nach einem beliebigen der Ansprüche 2 bis 12, weiter dadurch gekennzeichnet, daß der Kolben (2) einen zylindrischen Bereich (14) aufweist, der auf einem komplementären zylindrischen Bereich (15) des Kranzes (10) gleitet, indem er die Verbindung zwischen dem zylindrischen Tank (1) und dem Auslaßkanal (5, 6) des Produkts so lange unterbrochen hält, wie der Kolben (2) sich nicht um einen vorbestimmten Abstand (h) vom Kranz (10) entfernt hat.
  14. Vorrichtung nach einem der vorhergehenden Ansprüche, weiter dadurch gekennzeichnet, daß der zylindrische Produkttank (1) eine Füllöffnung (26) aufweist, die eine Verschlußkugel (27) aufnehmen kann, und diese Öffnung (26) nach außerhalb des Tanks (1) durch einen Kanal (47) mit Längsschlitzen (48) verlängert wird, wobei die Kugel (27) mit Kraft in den Kanal (47) in eine Zwischenstellung eingeschoben werden kann, in der sie die Verbindung des Tanks (1) mit der Außenumgebung über die Längsschlitze (48) erlaubt.
  15. Verfahren zum Füllen einer Vorrichtung nach einem beliebigen der Ansprüche 1 bis 14, das mindestens die folgenden Schritte aufweist:
    - Einführung der Vorrichtung in eine Vakuumkammer, die unter Vakuum gehalten wird,
    - Einführung eines vorbestimmten Produktvolumens in den zylindrischen Tank (1),
    - Verschließen des zylindrischen Tanks (1) unter Vakuum,
    dadurch gekennzeichnet, daß das vorbestimmte Produktvolumen durch ein außerhalb der erfindungsgemäßen Vorrichtung befindliches Meßmittel gemessen wird und einen beliebigen Wert von höchstens dem Gesamtvolumen des zylindrischen Tanks (1) haben kann.
  16. Verfahren zum Füllen einer Vorrichtung nach einem beliebigen der Ansprüche 1 bis 14, das mindestens die folgenden Schritte aufweist:
    - Einführung der Vorrichtung in eine Vakuumkammer,
    - Einführung eines vorbestimmten Produktvolumens in den zylindrischen Tank (1),
    - Herstellung des Vakuums in der Vakuumkammer,
    - Verschließen des zylindrischen Tanks (1) unter Vakuum,
    dadurch gekennzeichnet, daß das vorbestimmte Produktvolumen durch ein außerhalb der erfindungsgemäßen Vorrichtung befindliches Meßmittel gemessen wird und einen beliebigen Wert von höchstens dem Gesamtvolumen des zylindrischen Tanks (1) haben kann.
  17. Vorrichtung nach Anspruch 1, weiter dadurch gekennzeichnet, daß sie ein elastisches Mittel (36, 11) aufweist, das den Kolben (2) in seine Schließstellung bringt.
  18. Vorrichtung nach Anspruch 2, weiter dadurch gekennzeichnet, daß in der Ruhestellung der Kolben (2) entlang einer peripheren Linie nahe der zylindrischen Wand des Tanks (1) in dichtem Kontakt mit dem Kranz (10) steht, so daß nur ein radial äußerer Bereich des Kolbens ursprünglich dem im Tank (1) herrschenden Druck ausgesetzt ist, so daß der Querschnitt des Kolbens (2), der dem im Tank herrschenden Druck ausgesetzt wird, sich abrupt vergrößert, wenn der Kolben (2) sich vom Kranz (10) trennt, was eine deutliche Öffnung der Verbindung zwischen dem Tank (1) und dem Auslaßkanal (5, 6) begünstigt.
  19. Vorrichtung nach einem beliebigen der Ansprüche 1 bis 14 und 17, 18, weiter dadurch gekennzeichnet, daß sie Verriegelungsmittel aufweist, die den Drücker (3) in Bezug auf den Tank (1) axial festsetzen.
  20. Vorrichtung nach Anspruch 19, weiter dadurch gekennzeichnet, daß die Verriegelungsmittel (100, 103) durch eine Drehung des Drückers (3) in Bezug auf den Tank (1) entriegelt werden können.
  21. Vorrichtung nach Anspruch 20, weiter dadurch gekennzeichnet, daß die Verriegelungsmittel (100, 103) in der entriegelten Stellung blockiert bleiben, nachdem sie entriegelt wurden.
  22. Vorrichtung nach Anspruch 19, weiter dadurch gekennzeichnet, daß die Verriegelungsmittel aus mindestens einem Steg (104) aus zerbrechbarem Material zwischen dem Drücker (3) und dem Tank (1) bestehen.
  23. Vorrichtung nach einem der Ansprüche 1 bis 14 und 17, 18, weiter dadurch gekennzeichnet, daß sie Mittel aufweist, um ihre ungewollte Betätigung zu verhindern.
  24. Vorrichtung nach Anspruch 23, weiter dadurch gekennzeichnet, daß sie mindestens einen Bereich aus zerbrechbarem Material (108) aufweist, der einen Anschlag bildet, welcher sich der Betätigung widersetzt und bei der Betätigung zerbrochen wird.
  25. Vorrichtung nach einem der Ansprüche 1 bis 14 und 17, 18, weiter dadurch gekennzeichnet, daß sie Mittel aufweist, um zu verhindern, daß der Tank (1) vom Drücker (3) getrennt wird.
  26. Vorrichtung nach Anspruch 25, weiter dadurch gekennzeichnet, daß die Mittel Einrastmittel (105) aufweisen, die sich zumindest dann in der eingerasteten Stellung befinden, wenn die Vorrichtung sich in ihrer Ruhestellung befindet.
  27. Vorrichtung nach Anspruch 26, weiter dadurch gekennzeichnet, daß die Einrastmittel auch dann in der eingerasteten Stellung sind, wenn die Vorrichtung sich in ihrer Stellung des Endes der Betätigung befindet.
EP92913803A 1991-06-26 1992-06-25 Vorrichtung zum Spritzen einer vorbestimmten Dosis eines Mediums und Verfahren zum Füllen dieser Vorrichtung Expired - Lifetime EP0591365B1 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
FR9107854 1991-06-26
FR9107854A FR2678243B3 (fr) 1991-06-26 1991-06-26 Dispositif pour projeter une dose predeterminee d'un produit fluide, et son procede de remplissage.
FR9108624 1991-07-10
FR9108624A FR2678906B1 (fr) 1991-07-10 1991-07-10 Dispositif pour projeter une dose predeterminee d'un produit fluide, et son procede de remplissage.
PCT/FR1992/000583 WO1993000172A1 (fr) 1991-06-26 1992-06-25 Dispositif pour projeter une dose predeterminee d'un produit fluide, et son procede de remplissage

Publications (2)

Publication Number Publication Date
EP0591365A1 EP0591365A1 (de) 1994-04-13
EP0591365B1 true EP0591365B1 (de) 1995-12-20

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US (1) US5511698A (de)
EP (1) EP0591365B1 (de)
JP (1) JPH06508549A (de)
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WO (1) WO1993000172A1 (de)

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JPH06508549A (ja) 1994-09-29
DE69206988T2 (de) 1996-07-04
EP0591365A1 (de) 1994-04-13
DE69206988D1 (de) 1996-02-01
US5511698A (en) 1996-04-30
WO1993000172A1 (fr) 1993-01-07

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