EP0079193A2 - Cartouche pour la décharge d'une substance fluide - Google Patents

Cartouche pour la décharge d'une substance fluide Download PDF

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Publication number
EP0079193A2
EP0079193A2 EP82305828A EP82305828A EP0079193A2 EP 0079193 A2 EP0079193 A2 EP 0079193A2 EP 82305828 A EP82305828 A EP 82305828A EP 82305828 A EP82305828 A EP 82305828A EP 0079193 A2 EP0079193 A2 EP 0079193A2
Authority
EP
European Patent Office
Prior art keywords
container
cartridge
nut member
piston
abutment means
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.)
Withdrawn
Application number
EP82305828A
Other languages
German (de)
English (en)
Other versions
EP0079193A3 (fr
Inventor
Bruce Harris
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.)
Cuprinol Ltd
Original Assignee
Cuprinol Ltd
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
Application filed by Cuprinol Ltd filed Critical Cuprinol Ltd
Publication of EP0079193A2 publication Critical patent/EP0079193A2/fr
Publication of EP0079193A3 publication Critical patent/EP0079193A3/fr
Withdrawn legal-status Critical Current

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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
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/0005—Containers or packages provided with a piston or with a movable bottom or partition having approximately the same section as the container
    • B65D83/0011—Containers or packages provided with a piston or with a movable bottom or partition having approximately the same section as the container moved by a screw-shaft

Definitions

  • This invention relates to a cartridge for dispensing a fluent substance, for example a mastic, an adhesive etc.
  • Such cartridges are well known and comprise an elongate container having an outlet at one end (the front) and a piston at the other end.(the rear).
  • the fluent substance is contained between the outlet and the piston.
  • the outlet may comprise a dispensing nozzle, which may be integral with or detachable from the container. In order to expel the fluent substance from the cartridge the piston is moved towards the front of the cartridge.
  • a gun which comprises a frame for receiving the cartridge and providing an abutment for engaging the front end thereof, and a longitudinally extending rod with a pressure-distributing plate mounted on it to engage the piston from the other end of the cartridge.
  • a trigger When actuated, the rod is caused to move longitudinally to push the piston towards the front of the cartridge.
  • a second type of cartridge provided for use without a gun comprises a rotatable end cap closing the rear end of the cartridge and to which a screw is fitted to extend longitudinally through the cartridge and engage within a screw threaded aperture in the piston.
  • a third type of cartridge provided for use without a gun comprises a nut within the cartridge at the rear of the piston, and a closure cap sealing the rear end of the cartridge.
  • a separate screw engageable with the nut is provided.
  • the cartridge is used by perforating the end cap to allow the screw to be inserted through the perforation to engage the nut. By threading the screw through the nut so that the end of the screw engages the piston the latter can be moved towards the front of the cartridge to expel the fluent substance.
  • a fourth type of cartridge is similar to the third type but has the nut fixed to the rear end of the cartridge.
  • Cartridges of the second to fourth types above are referred to herein as "self-contained" cartridges.
  • a typical container comprises a spiral wound board tube, which may contain either a metal or a plastics piston.
  • the nut and screw (when provided) are commonly plastics or a plastics/metal combination.
  • Deep drawn aluminium containers are also known but are expensive to manufacture and in material cost.
  • Tubular plastics containers usually polyethylene or polypropylene are in use, but do not successfully retain fluent substances which have a high solvent content, such as wall board adhesives.
  • Polyamide plastics can be used, but this material is very expensive.
  • An alternative is to use a board container which is lined internally, and may also be lined externally, with metal foil such as aluminium foil, to resist the action of solvents and/or other chemical constituents of the fluent substance.
  • the present invention provides a cartridge for dispensing a fluent substance which comprises an elongate container for holding the fluent substance to be dispensed, means at one end of the container defining an outlet for the fluent substance, a piston movable longitudinally within the container for expelling fluent substance through the outlet, a nut member slidable within the container between the piston and the other end of the container, and abutment means at the other end of the container for contacting the periphery of the nut member whilst leaving the other end substantially open and unobstructed whereby the cartridge may be used in a gun or in conjunction with . a separate screw as a cartridge of the self-contained type.
  • the abutment means is constituted by at least one projection which extends inwardly of the wall of the container adjacent the other end.
  • the container body may be formed of board, metal or plastics.
  • a spiral wound board container which may be lined internally or internally and externally with foil may have the abutment means constituted by a metal ring for example of aluminium or tin plate, which is seamed and/or crimped onto the wall of the container at the other end and provides a flange which surrounds and projects inwardly of the container end to engage the periphery of the nut.
  • the force exerted by the nut is transmitted by the abutment means to the container wall mainly in shear and a reliable connection is ensured.
  • a similar metal ring may be employed or dimples formed in the container wall adjacent the other end may act as abutments for the nut.
  • an abutment flange ring may be a plastics ring which can be heat sealed, welded or moulded integrally with the container body.
  • a metal abutment ring as described above may be seamed and/or crimped onto the wall of the plastics container.
  • the abutment means must leave the other end of the container substantially open and unobstructed to allow a pressure-distributing plate mounted on the rod of a gun to be inserted into the container without requiring any modification thereof.
  • the nut member acts as a back-up and further pressure-distributing member behind the piston.
  • the cartridge is dimensioned to allow it to be used with standard commercial forms of gun, whether manually operated as mentioned above or by a pressurising assembly employing liquefied or pressurised gas.
  • the materials of which the cartridge can be made are not limited to those mentioned but include all other materials which can be fabricated as necessary and provide the desired resistance to attack by the fluent substance to be dispensed.
  • FIG. 1 An embodiment of a cartridge according to the present invention is shown by way of example in the accompanying diagrammatic drawing which shows the cartridge in sectional side view.
  • the drawing shows a cartridge according to the present invention which comprises a tubular spiral wound board container 1 of circular cross-section lined internally and externally with aluminium foil.
  • the container defines an elongate chamber 2 containing a viscous fluent substance to be dispensed, for example a mastic.
  • the front end of the container is closed by an end cap 3 of tin plate, seamed and crimped to the container wall at 4.
  • the end cap 3 mounts a dispensing nozzle 5, and the inner face of the end cap is covered by a disc of foil 6.
  • a piston 7 is slidably mounted within the container 1.
  • the piston 7 comprises a thin-walled metal cup 8 which is a sliding sealing fit within the container.
  • a plastics washer 9 is an interference fit within the cup 8 and operates to distribute over the base wall of the cup the force applied to the piston to eject the fluent substance.
  • the washer 9 comprises a smooth concave rear face 9a which leads into a central annular seating 10 which surrounds a hollow boss 11.
  • the washer 9 On its opposite face, the washer 9 has stiffening ribs 12 which extend radially outward from the central boss 11 and abut the base wall of the cup 8.
  • a perimetral rim 13 of the washer 9 provides the interference fit within the cup 8 of the piston 7.
  • a nut member 14 is slidably mounted in the container 1 between the piston 7 and the rear end proper.
  • the nut member 14 has a central internally screw-threaded boss 15 which is in coaxial alignment with the boss 11 of the washer 9 mounted in the piston 7, and preferably includes stiffening ribs 16 as shown connecting the boss 15 to an outer cylindrical wall 17, and a rim 17a frictionally engaged with the wall of the container 1.
  • the nut member 14 is shown longitudinally spaced within the container 1 from the washer 9 and piston 7, it will be noted that the cylindrical wall 17 is dimensioned to fit within the cup 8 of the piston 7 between the side wall of the piston and the washer 9 so as to reduce the space required to accomodate these components within the container 1 and thus maximise the volume of chamber 2 available to contain fluent substance to be dispensed, for a given length of the container 1.
  • the cartridge will normally be packed with the nut member 14, washer 9 and piston 7 telescoped in this fashion.
  • An abutment means 18 is mounted on the rear end of the container 1 and comprises a metal ring seamed and crimped to the container wall 1 to define an annular flange 19 which projects inwardly into the container 1 for a distance sufficient to restrain the nut member and leave the end of the container itself substantially open and unobstructed.
  • the cartridge may either be used with a conventional gun or as a self-contained cartridge in conjuction with a screw 20. Initially in either case, the end 5a of the nozzle is opened by severing it, and a spike is inserted through the nozzle to pierce the foil 6.
  • the cartridge is to be used with a gun, it is placed in the gun and the gun trigger is operated to advance the rod of the gun and any pressure-distributing plate located thereon into engagement with the nut member 14. Thereafter, operation of the trigger first moves the nut member 14 into abutment with the washer 9 and piston 7 (if these components have become separated), and then moves the nut member 14, washer 9 and piston 7 together as a unit longitudinally of the container 1 to expel fluent substance through the nozzle 5.
  • the screw 20 is threaded into the boss 15 of the nut member 14 until the end 20a of the screw engages in the central seating 10 in the washer 9.
  • the concave rear face 9a of the washer 9 ensures that even . if the screw 20 is incorrectly aligned the end 20a upon striking the washer will slide down the face 9a until it correctly engages in the seating 10. Thereafter further rotation of the screw 20 draws the nut member 14 rearwardly until the peripheral portion of the rear face thereof engages the flange 19 of the abutment. After this position is reached, continued rotation of the screw 20 causes the washer 9 and piston 7 to advance as a unit longitudinally of the container 1 to expel fluent substance through the nozzle 5. Friction between the wall of the container 1 and the rim of the nut member, as well as between the rear face of the nut member and the abutment means is sufficient to prevent the nut member from rotating with the screw as the latter is turned to advance the piston.
  • the inner edge of the flange 19 may be rolled or otherwise made safe if desired to avoid the danger of a sharp edge which could result in a user of the cartridge cutting his fingers.
  • a cartridge comprising a metal or a plastics container 1 may be constructed in the same manner as the cartridge described above comprising a tubular spiral wound board container, namely with a metal abutments means 18 having an annular flange 19 seamed and/or crimped to the wall of the metal or plastics container.
  • Other forms of abutment means and specifically of the abutment flange 19 are however available with a metal or plastics container-1.
  • Such a container 1 may be provided with an inwardly projecting flange 19 at the rear end, or a noncontinuous flange 19 may be obtained by forming a plurality of inwardly extending projections or dimples in the wall of the container adjacent the rear end.
  • the abutment means 18 and flange 19 may also be of plastics and can be heat sealed or welded to the container wall, or a flange 19 may be moulded integrally with the rear end of the container 1.
  • the piston 7 and the washer 9 may if desired be combined and manufactured as a single member or element.
  • the abutment means and specifically the flange 19 need project into the container only for a distance sufficient to restrain the nut member, for example such as about 0.5 to 2 millimetres radially inwardly from the container wall, whereby substantially open and unobstructed access to the interior of the container at the rear end is ensured to permit use of the cartridge with a conventional gun, and the additional provision of the screw 20 enables the cartridge to be used as a self-contained dispenser as and if desired.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Coating Apparatus (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
EP82305828A 1981-11-11 1982-11-02 Cartouche pour la décharge d'une substance fluide Withdrawn EP0079193A3 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB8133993 1981-11-11
GB8133993 1981-11-11
GB8205371 1982-02-23
GB8205371 1982-02-23

Publications (2)

Publication Number Publication Date
EP0079193A2 true EP0079193A2 (fr) 1983-05-18
EP0079193A3 EP0079193A3 (fr) 1984-03-28

Family

ID=26281232

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82305828A Withdrawn EP0079193A3 (fr) 1981-11-11 1982-11-02 Cartouche pour la décharge d'une substance fluide

Country Status (2)

Country Link
EP (1) EP0079193A3 (fr)
AU (1) AU9032882A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0371278A1 (fr) * 1988-11-29 1990-06-06 Alfred Fischbach Kunststoffspritzgusswerk Cartouche pour masses plastiques
GB2237607A (en) * 1989-11-04 1991-05-08 Metal Box Plc Containers
GB2367864A (en) * 2000-10-10 2002-04-17 Darren Briggs Fluent material applicator
CN105587982A (zh) * 2016-03-10 2016-05-18 王维琛 一种润滑脂加注装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR511578A (fr) * 1920-02-16 1920-12-29 Adolphe Gaetan Henri Moreau Récipient permettant de conserver stériles, porter sans souillure et en les dosant les pommades ou médicaments visqueux sur l'épiderme et dans les cavités naturelles ou artificielles des malades
FR2347856A7 (fr) * 1976-04-07 1977-11-04 Fischbach A Kunststoff Kg Distributeur de produits plastiques ou pateux
WO1979000758A1 (fr) * 1978-03-14 1979-10-04 O Nielsen Piston d'ejection d'une matiere visqueuse ou plastique
US4269331A (en) * 1980-02-15 1981-05-26 Watson John D Metered dispensing device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR511578A (fr) * 1920-02-16 1920-12-29 Adolphe Gaetan Henri Moreau Récipient permettant de conserver stériles, porter sans souillure et en les dosant les pommades ou médicaments visqueux sur l'épiderme et dans les cavités naturelles ou artificielles des malades
FR2347856A7 (fr) * 1976-04-07 1977-11-04 Fischbach A Kunststoff Kg Distributeur de produits plastiques ou pateux
WO1979000758A1 (fr) * 1978-03-14 1979-10-04 O Nielsen Piston d'ejection d'une matiere visqueuse ou plastique
US4269331A (en) * 1980-02-15 1981-05-26 Watson John D Metered dispensing device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0371278A1 (fr) * 1988-11-29 1990-06-06 Alfred Fischbach Kunststoffspritzgusswerk Cartouche pour masses plastiques
GB2237607A (en) * 1989-11-04 1991-05-08 Metal Box Plc Containers
GB2237607B (en) * 1989-11-04 1993-01-20 Metal Box Plc Containers
GB2367864A (en) * 2000-10-10 2002-04-17 Darren Briggs Fluent material applicator
CN105587982A (zh) * 2016-03-10 2016-05-18 王维琛 一种润滑脂加注装置

Also Published As

Publication number Publication date
AU9032882A (en) 1983-05-19
EP0079193A3 (fr) 1984-03-28

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Effective date: 19850302

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Inventor name: HARRIS, BRUCE