Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D47/00—Closures with filling and discharging, or with discharging, devices
  • B65D47/04—Closures with discharging devices other than pumps
  • B65D47/20—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge
  • B65D47/24—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge with poppet valves or lift valves, i.e. valves opening or closing a passageway by a relative motion substantially perpendicular to the plane of the seat
  • B65D47/241—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge with poppet valves or lift valves, i.e. valves opening or closing a passageway by a relative motion substantially perpendicular to the plane of the seat the valve being opened or closed by actuating a cap-like element
  • B65D47/242—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge with poppet valves or lift valves, i.e. valves opening or closing a passageway by a relative motion substantially perpendicular to the plane of the seat the valve being opened or closed by actuating a cap-like element moving helically
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
  • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
  • B65D41/04—Threaded or like caps or cap-like covers secured by rotation
  • B65D41/0435—Threaded or like caps or cap-like covers secured by rotation with separate sealing elements
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D47/00—Closures with filling and discharging, or with discharging, devices
  • B65D47/04—Closures with discharging devices other than pumps
  • B65D47/20—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge
  • B65D47/2018—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure
  • B65D47/2056—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure lift valve type
  • B65D47/2062—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure lift valve type in which the deformation raises or lowers the valve stem
  • B65D47/2075—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure lift valve type in which the deformation raises or lowers the valve stem in which the stem is raised by the pressure of the contents and thereby opening the valve

Definitions

• the invention relates to a device for closing a container with a threaded neck such as a tube of paint, gouache, toothpaste or ointment.
• This device is intended in particular to prevent drying of the contents of the container, air intakes and blockage of the cap.
• Swiss Patent No. 323,486 relates to a device for closing a container with a neck such as a tube, comprising a stamping part, a cap, mounted by screwing on the neck and two cooperating stop stops provided , respectively, on the container neck and on the cap, to prevent the latter from detaching from the container.
• This device has the major drawback of requiring the presence of a stopper on the neck of the container. It therefore requires that the neck of the container be transformed so as to include this stop. Such a transformation makes the production of the tubes more complex and it entails an adaptation of the machines making it possible to manufacture these tubes. All this translates into a high cost price of the tubes provided with such a closure device.
• This device includes at least:
• a plug having a central part comprising a bore provided with a tapping capable of cooperating with the threading of the neck of the container, and an upper part comprising an opening, the end of said tapping being separated from said upper part by a sliding surface
• an element for obstructing said opening is distinguished in that it further comprises: - an isolation element having fixing means capable of being inserted in the neck of the container and a flare whose end is sized to come into contact with said sliding surface of said plug over the entire circumference of said bore so as to produce a tight barrier making it impossible for the contents of the container to pass.
• Such a device offers the advantage of being able to be mounted directly on the threaded neck of a container, without this neck needing to be adapted. In addition, it remains removable. Thus, once the container is empty, the device can be recovered and installed on another container.
• FIGS. 1 to 24 are illustrations of the device according to the invention.
• Figure 1 shows, schematically and in section, a device according to the invention mounted on a threaded neck, when the cap is fully screwed.
• FIG. 1 shows, schematically and in section, the device of Figure 1, when the cap is partially unscrewed.
• Figure 3 shows, schematically and in section, the device of Figures 1 and 2, when the user pressed on the container, the arrows symbolizing the movement of the material contained in the container.
• Figures 4 and 5 show, schematically and respectively, in front view in section and in bottom view, a plug of the device according to the invention.
• Figures 6 and 7 show, schematically and respectively, in front view in section and in bottom view, an insulation element of the device according to the invention.
• Figures 8 and 9 show, schematically and respectively, in front view in section and in bottom view, a first variant of the isolation element of the device according to the invention.
• FIG. 10 schematically represents, in front view in section, a second variant of the isolation element of the device according to the invention.
• FIG. 11 schematically represents, in front view in section, a third variant of the isolation element of the device according to the invention.
• Figure 12 shows schematically and in section, a device according to the invention comprising an isolation element similar to that of Figure 11 and mounted on the threaded neck of a container.
• FIGS. 13a and 13b schematically represent a device according to the invention comprising a fourth variant of the isolation element, respectively, when the cap is fully screwed and when the cap is fully unscrewed.
• Figures 14 and 15 show, schematically and respectively, in front view in section and in bottom view, an obstruction element of the device according to the invention.
• Figures 16 and 17 show, schematically and respectively, in front view in section and in bottom view, a first variant of the obstruction element.
• Figure 18 shows schematically and in section, a device according to the invention comprising the variant of the blocking element of Figures 16 and 17, and mounted on the threaded neck of a container.
• Figures 19 and 20 show, schematically and respectively, in front view in section and in bottom view, a second variant of the obstruction element of the device according to the invention.
• Figure 21 shows schematically and in section, a device according to the invention comprising the variant of the blocking element of Figures 19 and 20, and mounted on the threaded neck of a container.
• FIGS 22, 23 and 24 show variants of the device according to the invention.
• FIGS. 1, 2 and 3 The operating principle of the device according to the invention is illustrated in general by FIGS. 1, 2 and 3.
• FIG. 3 illustrates what happens when the user wishes to remove part of the contents of the container from the latter.
• the plug 10 has an axis of revolution XX, and has a generally cylindrical central portion 13 comprising a cylindrical central bore 11 provided in part with a thread 12, capable of cooperating with the thread of the neck of a container and an upper part 13bis generally perpendicular to the side wall 14 of the central part 13.
• An opening 17 is provided in the upper part 13bis to allow the contents of the container to be evacuated.
• the internal thread 12 generally extends from the end face 14a of the central part 13 in the direction of the opening 17, but not up to the end of the cylindrical bore 11, so that the internal wall of this bore 11 comprises a sliding surface 18, generally smooth, separating the end 19 of the tapping 12 from the upper part 13bis of the plug 10.
• the tapping 12 projects relative to the sliding surface 18 so that the plug 10 cannot be easily detached from the rest of the device according to the invention. It is advantageous to arrange for the axial distance over which the sliding surface 18 extends to be close to that over which the tapping 12 extends: there is thus great latitude in adjusting the quantity of material leaving the container.
• a second bore 20, preferably in the form of a truncated cone or sphere, may be formed between the opening 17 and the bore 11, so as to facilitate the exit of the contents of the container.
• the isolation element 21 has an axis of revolution Y-Y and has a flare 22 which extends from fixing means, away from said axis of revolution .
• This flare 22 is dimensioned so that its end 23 comes into contact with the sliding surface 18 over the entire circumference of the bore 11 of the plug 10 and exerts pressure on the sliding surface 18 of the plug 10, so to make a tight contact making it impossible for the contents of the container to pass between the end 23 and the sliding surface 18.
• the isolation element 21, by constituting a tight barrier, isolates the contents of the container from the internal thread 12 and from the thread of the container neck.
• the entire circumference of the bore 11 should not be understood as designating the entire surface of the wall of the bore 11 or the entire sliding surface 18, but as meaning any circumference of a disc obtained by intersection of a plane perpendicular to the axis of the bore 11 and having the diameter of the diameter of the bore 11, the said plane being able to be in any axial position situated between the end 19 of the thread and the upper part of the plug.
• the diameter of the flare 22 at its end 23 is therefore at least equal to the diameter of the bore 11 of the plug at its internal sliding surface 18. When the plug 10 is unscrewed, the end 23 scrapes the sliding surface 18.
• the end 23 may include a surface 23bis parallel to said axis of revolution Y-Y which is itself generally parallel to the axis X-X when the device is installed on a container.
• the contact between the end 23 and the plug 10 is advantageously made on a small surface so that the pressure on the sliding surface 18 is fairly strong and the seal is satisfactory. This contact can therefore be linear or practically linear and as it takes place over the entire circumference of the bore 11 of the plug 10, it defines a loop.
• the dimensions of the plug 10 and of the insulating element 21 are such that said contact is made over a distance along the axis YY which is very small, generally at least two times less than the distance over which extends l flaring 22 from the fixing means. Consequently, when using the device according to the invention, the screwing or unscrewing of the plug causes a displacement of the end 23 inside the bore 11, along the axis XX, similar to the displacement of a disc inside a cylinder.
• the flaring 22 extends from the fixing means and preferably by moving away along the axis Y-Y of the latter. It can therefore define a hollow trunk of cone of small thickness compared to its axial length.
• the ratio of the thickness of the truncated cone to its distance from the attachment means can be less than 1/3.
• the flaring 22 is therefore connected, by its part opposite the end 23, to said fixing means.
• These are intended to hold the isolation element in place, to make it difficult, if not impossible, any rotation on itself and any detachment of the container neck.
• the fastening means are suitable for, and dimensioned to fit into the neck of the container and able to grip the neck of the container by exerting pressure on all or part of the surface of the bore of this pass.
• These fixing means may extend over all or part of the length of the bore of the neck of the container. They are capable of allowing the contents of the container to pass towards the opening of the stopper, they can be constituted by a hollow cylinder 24.
• the isolation element then has substantially the shape of a funnel.
• the external diameter of the cylinder 24 is at least equal to that of the bore of the container neck and its length may be less than or greater than that of the bore of the container neck.
• the fixing means consist of at least two lugs 26 and a ring 26bis.
• the legs 26 which may, for example, be four in number, extend from the base 27 of the flare 28 in the direction of the axis of symmetry of this variant and away from the end 29 of the flare 28. They are generally parallel to said axis of symmetry, but when this variant of the isolation element is not mounted on the neck of a container, they can, while extending along the 'axis of symmetry, move away from each other so that one obtains a greater pressure on the bore of the container neck, once the device mounted.
• the ring 26bis has a diameter at least equal to that of the bore of the neck of the container so as to exert pressure on this neck and thus prevent the passage of the contents of the container.
• the end 29 has no surface parallel to the longitudinal axis of this variant 25 and therefore forms an angle with respect to the sliding surface of the plug. It follows that the contact between the plug and the end 29 takes place in a circle.
• FIG. 10 illustrates a second variant 30 of the isolation element.
• This variant 30 is provided with locking means intended to make it more difficult to extract it from the neck of the container.
• These blocking means may be in the form of a hollow truncated cone 31 projecting from the end 32 of the fixing means 33 opposite the flare 34.
• the distance between the base 35 of the flare 34 and l end 32, measured parallel to the axis of symmetry, must then be at least equal to the length of the bore of the neck of the container, so that this neck can be placed between the flare 34 and the means of blocking 31.
• FIG. 11 shows a third variant 36 of the isolation element comprising a flaring 37 in the form of a disc extending from a cylinder 38.
• Stop means 39 projecting with respect to the lateral external wall of the cylinder 38 are preferably provided at a certain axial distance from the flare 37 to limit the penetration of the cylinder 38 into the bore of the neck of the container and to allow greater unscrewing of the cap.
• These stop means 39 can be constituted for example by bosses, projections or a flange.
• Locking means 40 having the form of a ring 40 ( Figure 11) or a hollow truncated cone 41 ( Figure 12) may also be provided at the end of the cylinder 38 opposite the flare 37, so as to make it more difficult to tear it off.
• Figures 13a and 13b each show one half of the same device according to the invention mounted on a container neck and comprising a fourth variant 42 of the isolation element.
• the variant 42 includes attachment means 43 which are flexibly connected to the flare 44 and in such a way that they normally tend to move away from this flare 44.
• these attachment means 43 are in contact with the sliding surface 46 of the plug 45. If the plug 45 is unscrewed, they slide on the surface 46 by exerting pressure on the latter, just as end 47 of the flare 44, until the plug 45 is sufficiently unscrewed so that they meet a recess 48 in the thread of the plug. They can then, as illustrated in FIG. 13b, sink into the hollow 48 because they precede the flare 44 (opposite the thread) and have greater mobility or flexibility than the end 47 of this flare 44.
• This variant 42 of the isolation element is particularly useful when the thread of the plug 45 does not protrude relative to the sliding surface 46.
• Figures 14 and 15 show an obstruction element 49 of the device according to the invention.
• This obstruction element 49 generally has an elongated shape along an axis AA and preferably symmetrical with respect to this axis. he comprises at least one obturator or obturator part 50 and retention means.
• the shutter 50 comprises an upper part 51, a central part 52 and a lower part 53.
• the upper part 51 is intended to obstruct the opening of the stopper of the device to thus seal the container. It therefore generally has a shape complementary to that of the opening 17 and or, where appropriate, of the bore 20 of the plug 10 ( Figures 4 and 5).
• the middle part 52 can take very different forms but it must obviously, like the lower parts 53 and upper 51, be dimensioned so that it can fit into the central bore 11 of the plug 10 ( Figure 4) and move there.
• the lower part 53 is intended to come into abutment at least partially against the flaring of the isolation element.
• it has a shape such that when the cap is fully screwed, the contact points between the lower part 53 and said flare define a loop.
• This has the advantage of forming a second sealing barrier between the exterior of the container and its contents, the first sealing barrier being constituted by the obstruction of the opening of the stopper by the upper part 51.
• the shutter 50 may have overall, for example, a spherical shape (Figures 14,15), ovoid, or the shape of a solid cylinder chamfered on its two opposite ends ( Figures 16,18).
• the retention means extend from a location located on the lower part 53 and intended to be below said contact points between the flare and the lower part 53, and move away from the latter in a direction parallel to the axis AA or at a slight angle with this axis.
• At least part of the retention means must be able to fit with a certain clearance inside the fixing means of the isolation element and move therein in a direction substantially parallel to the axis of symmetry A-A.
• the retention means may comprise, at an end opposite to the lower part 53, stop means projecting relative to the means for fixing the isolation element and / or possibly relative to the bore of the neck of the container. .
• the role of these stop means is to retain the obstruction element and to limit its mobility relative to the isolation element and the amplitude of its movement towards the opening of the plug.
• the stop means also prevent the obstruction element from detaching from the container if the cap has been removed.
• the length of the retention means measured along the axis AA is then greater than that of the means for fixing the isolation element. It can be greater (see Figures 1 to 3) or lower (see Figure 23) than that of the bore of the container neck. It is generally chosen to be less than the displacement length of the stopper (see FIG.
• the retention means can be made up of several, for example, four, lugs 54 (FIGS. 14, 15) which can be arranged inside the means for fixing the isolation element and ending with stop means. in the form of pins 55.
• the number of tabs 54 does not matter, but, if during the mounting of the device, the clearance between these tabs and the means for fixing the insulation element is small, it is necessary that there remain at least one space 56 ( Figure 15) between at least two of them so that the contents of the container can pass and go towards the opening of the stopper when desired. Indeed, as is most visible in Figure 3, if the legs 54 connected and made a loop and that said play was small, it would be very difficult to extract the contents of the container.
• Figures 16 and 17 show a variant 57 of the blocking element whose retention means comprise a single rod 58 ending in a bar 59 making an angle, preferably 90 °, with the axis BB of longitudinal symmetry of this variant 57.
• Figure 18 is illustrated a device according to the invention installed on the neck of a container and comprising variant 57 of Figures 16 and 17, a plug 60 having an opening 61 preceded by a frustoconical bore 62 the internal wall of which is parallel with a first chamfer 63 of the shutter 64, an insulating element having, as fixing means, a hollow cylinder 65 whose length is less than that of the bore of the neck of the container and d 'where a frustoconical flaring 66 starts able to cooperate with the second chamfer 67 of the shutter 64.
• FIGS. 19 and 20 show a variant 70 of the obstructing element, the retention means of which comprise a rod 71 ending in four sides 72 substantially in the shape of a right triangle and arranged at 90 ° from one another. so as to form a cross when viewed from below ( Figure 20).
• the shutter is generally in the form of a full cylinder. Its lower part 73 has a chamfer 74, its middle part 75 is purely cylindrical and its upper part 76 has the shape of a sphere trunk.
• FIG. 21 represents a device according to the invention placed on the neck of a container.
• This device is composed of variant 70 of FIGS. 19 and 20, of an insulating element similar to that of FIG. 12, but with, in addition, a chamfer 77 whose walls are parallel to the chamfer 74 of variant 70 and d 'a plug 78 whose bore 79 preceding the opening 80 has a shape complementary to that of the upper part 76 of the variant 70.
• the sides 81 of the panels 72 are substantially parallel to the internal surface 75 of the locking means 41 of the isolation element of figure 12.
• FIG. 22 shows a variant of a device according to the invention comprising, in addition to the plug 82, the isolation element 83 and the obstruction element 84, a ring 85 having, on its periphery, a thread 86 able to cooperate with the thread of the plug 82 and on its internal wall, a thread 87 capable of cooperating with the thread of the neck of the container.
• This ring 85 preferably has a thickness, measured along its axis of revolution, at least equal to the length over which the thread of the neck of the container extends.
• This variant offers the advantage of allowing the use of a plug 82 of large diameter and which may have an opening of large diameter. Large amounts of material can then be quickly removed from the container.
• FIG. 23 shows another variant of a device according to the invention, in which the isolation element 88 is connected to a ring 89 similar to that of FIG. 22 by a shoulder 90 so as to form a structure in one piece.
• the cylinder 91 of the isolation element 88 may extend only over part of the length of the bore of the threaded neck.
• the space between the cylinder 91 and the shrinking 92 of the ring 89 is dimensioned to be able to receive the neck of the container.
• the ring is preferably screwed until the threaded neck abuts against the shoulder 90. The neck is then pinched between the ring 89 and the cylinder 91, due to the pressure exerted by the latter.
• the obstruction element 93 can be retained by lugs 94 of a sufficiently short length so that they do not open out of the neck.
• the lugs 95 terminating the legs 94 do not protrude relative to the wall 96 of the neck bore but they protrude relative to the internal wall 97 of the cylinder 91 so as to retain the obstruction element 93 and to limit its movements towards the opening of the stopper and therefore towards the outside of the container.
• FIG. 24 is illustrated yet another variant of the device according to the invention in which the isolation element 98 and the obstruction element 99 shown in section, form a structure in one piece.
• the isolation element 98 may be similar, for example, to that shown in FIG. 10.
• the obstruction element 99 is generally in this case devoid of retention means.
• the obstruction element 99 may then only consist of a shutter such as, for example the shutter 50 visible in FIG. 14.
• the attachment of the obstruction element 99 can be achieved by a connecting ring or weld 100 located approximately at the base of the flaring of the isolation element 98 and on its internal face, (that is to say facing the axis of symmetry)
• the obstruction element 99 must be provided with at least one channel 101 passing through it.
• This channel 101 starts from a point located under the ring 100, that is to say inside the cylinder 102 of the isolation element 98, and opens out above the ring 100, in the space located inside the stopper between the flare and the upper part of the obstruction element intended to obstruct the opening of the stopper.
• the trajectory followed by the contents of the container during its use is symbolized by the arrows. In the absence of such a channel 101, the contents of the container could not leave the container due to the barrier formed by the ring 100.
• the isolation element of the device according to the invention can be made of a fairly flexible material such as a metal or metal alloy.
• the cap is generally made of plastic. It is usually made by molding, which allows it to have complex shapes.
• the obstruction element may be made of metal or a metal alloy.
• the shutter and the retention means can be made together or united by welding.
• the device according to the invention is therefore easy to produce and at a low cost price.
• H can easily be placed on a threaded neck as follows: a) the fastening means of the isolation element are slid or forced into the bore of the neck of the container, until the flare comes into abutment against the neck; the latter is then, if necessary, sandwiched between the flare and the locking means; b) the stopping means followed by the means for retaining the obstruction element are forcibly inserted between the means for fixing the isolation element, until a click occurs; thanks to the play existing between the fixing means and the retention means, the obstruction element can then move freely along its axis of symmetry over a limited distance; c) the plug is put in place by screwing it onto the end of the flare or by forcibly introducing this end into the central bore of the plug and pressing it in until the thread of the plug comes into engagement with neck thread; d) the container can then be closed by screwing the stopper fully down, that is to say normally until the upper part of the shutter abuts against the upper part of the stopper.
• the various elements of the device have not

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Closures For Containers (AREA)
• Discharge Heating (AREA)
• Extrusion Moulding Of Plastics Or The Like (AREA)
• Screw Conveyors (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=9460672

Family Applications (1)

Country Status (6)

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• 1994
  • 1994-06-08 FR FR9402494A patent/FR2721006B1/fr not_active Expired - Fee Related
• 1995
  • 1995-05-24 DE DE69508752T patent/DE69508752D1/de not_active Expired - Lifetime
  • 1995-05-24 AT AT95920985T patent/ATE178284T1/de active
  • 1995-05-24 EP EP95920985A patent/EP0762976B1/de not_active Expired - Lifetime
  • 1995-05-24 JP JP8500424A patent/JPH10500926A/ja active Pending
  • 1995-05-24 WO PCT/FR1995/000682 patent/WO1995033658A1/fr active IP Right Grant

Non-Patent Citations (1)

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