EP0647569B1 - Piston pour cartouches - Google Patents

Piston pour cartouches Download PDF

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Publication number
EP0647569B1
EP0647569B1 EP94105446A EP94105446A EP0647569B1 EP 0647569 B1 EP0647569 B1 EP 0647569B1 EP 94105446 A EP94105446 A EP 94105446A EP 94105446 A EP94105446 A EP 94105446A EP 0647569 B1 EP0647569 B1 EP 0647569B1
Authority
EP
European Patent Office
Prior art keywords
piston
skirt
liquid
thrust
cartridge
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
EP94105446A
Other languages
German (de)
English (en)
Other versions
EP0647569A1 (fr
Inventor
Falk Walter Schneider
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6499376&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0647569(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Priority to SI9430140T priority Critical patent/SI0647569T1/xx
Publication of EP0647569A1 publication Critical patent/EP0647569A1/fr
Application granted granted Critical
Publication of EP0647569B1 publication Critical patent/EP0647569B1/fr
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
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00576—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes characterised by the construction of a piston as pressure exerting means, or of the co-operating container
    • B05C17/00579—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes characterised by the construction of a piston as pressure exerting means, or of the co-operating container comprising means for allowing entrapped air to escape to the atmosphere
    • 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

Definitions

  • the invention relates to a piston for a cartridge, in which a particularly highly viscous liquid is available held and by means of the longitudinally displaceable in the cartridge Piston can be conveyed out of the cartridge is that the piston has an axially acting compressive force can be misplaced, the piston consisting of one piece hollow cylindrical piston jacket and one on the Piston jacket on its liquid-facing Side acting as a pressure surface on the liquid, domed piston crown, one in the cartridge axially displaceable pressure plate is provided by which the piston with the compressive force towards Liquid is resilient.
  • a piston is known from DE-U-92 11 218.8.
  • Cartridges with a plunger of this type are large Scope for the ready-made provision of sealants and adhesives or similar highly viscous Liquids used.
  • the liquids are there using suitable dispensing guns from the cartridges carried out directly on the workpieces.
  • the dispensing guns are set up so that one of Hand applied mechanical pressure exercised or such a pressure force initially pneumatically is produced. In any case it increases the internal pressure in the cartridge, the stronger, the tougher - With otherwise the same, in particular the same, geometric geometry Conditions - the liquid in question is. There is a risk that this will result in a flawless Sealing of the piston can no longer be guaranteed can and loss of the liquid to be processed and their discharge into undesirable areas.
  • the object of the invention is therefore to a piston of the type specified above so train that a cartridge seal too is then ensured if the one containing the liquid Interior of the cartridge under increased pressure is exposed when a compressive force is exerted on the piston is exercised.
  • the outer diameter increases of the piston skirt under the influence of the pressure force to, especially in one through the connections of the Pressure area marked, and so long until it lies against the wall of the cartridge; increasing Compressive force increases the sealing force on this Wall and thus improves the seal.
  • the pressure pieces with the Piston jacket and the piston crown integrally formed be.
  • the gusset in the connection area of the piston crown on the piston skirt can in one for the course of forces can be designed in a particularly favorable manner, that at this transition from the piston crown to the piston skirt on the inner circumference there is a ring collar to which the pressure pieces are connected.
  • Pistons can be reached when on the outside Circumference of the piston skirt radial lubrication grooves or - bags are provided, and the seal can be improved be when on the outer circumference of the piston skirt radial sealing lips are provided.
  • Pistons designed according to the invention can be advantageous from a rubber, a rubber-like material or consist of an elastic plastic; then they are Can be manufactured cheaply as molded parts and is particularly functional.
  • a piston according to the invention essentially consists of one piece from a hollow cylindrical piston skirt 1 and a piston crown 2.
  • the piston skirt 1 is on its outer Circumference 11 with several radially circumferential sealing lips 12 equipped, which seals against the wall of the in the Place the drawing of the omitted cartridge within which the piston is movable in the axial direction.
  • Some Lubrication grooves 13 in which a lubricant is stored ensure long-term smooth operation of the piston in the cartridge.
  • a stiffening of the piston skirt 1 can by longitudinal ribs provided on the inner circumference 14 thereof Reach 15.
  • the dimensional stability thus given leaves it advised appear, the piston bottom end of the piston skirt 1 to touch on its outer circumference 11, so that a bevel 16 the insertion of the piston into the cartridge facilitated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Coating Apparatus (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Fluid-Damping Devices (AREA)

Claims (8)

  1. Piston (1, 2) pour une cartouche dans laquelle un liquide à viscosité particulièrement élevée est maintenu en réserve et peut, au moyen du piston (1, 2) pouvant coulisser longitudinalement dans la cartouche, être extrait de la cartouche par le fait que le piston (1, 2) peut être soumis à une force de compression agissant axialement, le piston (1, 2) étant constitué, en une seule pièce, d'une jupe cylindrique creuse (1) de piston et d'un fond bombé (2) de piston solidaire de la jupe (1), ce fond de piston formant, du côté du liquide, une surface de pression, sur laquelle agit le liquide, une plaque de pression (5) étant prévue pour coulisser axialement dans la cartouche, et au moyen de laquelle on peut appliquer, dans la direction du liquide, la force de pression (F) sur le piston (1, 2), caractérisé
    (a) en ce que, sur la périphérie intérieure (14) de la jupe (1) du piston, sont prévues plusieurs pièces de pression (3) de façon que la plaque de pression (5) puisse leur appliquer en même temps la pression, lorsque cette plaque est soumise à la force de pression (F),
    (b) en ce que les pièces de pression (3) sont chacune réalisées sous la forme de leviers à un seul bras, encastrés dans la jupe (1) du piston et s'étendant radialement et axialement vers l'intérieur avec une inclinaison par rapport à la plaque de pression (5),
    (c) en ce que le piston est déformable élastiquement sous l'effet de la force de pression (F), et
    (d) en ce que les pièces de pression (3) sont formées, à partir d'une bague de pression (30), par des fentes de séparation radiales (32), réparties sur sa périphérie (14).
  2. Piston suivant la revendication 1, caractérisé en ce que les pièces de pression (3) ayant la même forme, sont réparties sur la périphérie (14) de la jupe (1) du piston.
  3. Piston suivant la revendication 1 ou la revendication 2, caractérisé en ce que les pièces de pression (3) sont encastrées dans la jupe (1) du piston, au voisinage du fond du piston (2).
  4. Piston suivant l'une des revendication 1 à 3, caractérisé en ce que les pièces de pression (3) sont réalisées en une seule pièce avec la jupe (1) du piston et le fond de piston (2).
  5. Piston suivant l'une des revendication 1 à 4, caractérisé en ce que dans la zone de transition entre le fond de piston (2) et la jupe (1) du piston et sur la périphérie intérieure (14) de celle-ci est prévu un épaulement annulaire (4) auquel sont raccordées les pièces de pression (3).
  6. Piston suivant l'une des revendication 1 à 5, caractérisé en ce que, sur la périphérie extérieure (11) de la jupe (1) du piston, sont prévues des cannelures ou des poches de graissage (13) radiales.
  7. Piston suivant l'une des revendication 1 à 6, caractérisé en ce que, sur la périphérie extérieure (11) de la jupe (1) du piston, sont prévues des lèvres radiales d'étanchéité (12).
  8. Piston suivant l'une des revendication 1 à 7, caractérisé en ce qu'il est constitué d'un caoutchouc, d'un matériau analogue au caoutchouc, ou d'une matière plastique élastique.
EP94105446A 1993-10-04 1994-04-08 Piston pour cartouches Expired - Lifetime EP0647569B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9430140T SI0647569T1 (en) 1993-10-04 1994-04-08 Piston for cartridges

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4333811A DE4333811A1 (de) 1993-10-04 1993-10-04 Kolben zum Fördern von niedrig- bis hochviskosen Flüssigkeiten aus Kartuschen
DE4333811 1993-10-04

Publications (2)

Publication Number Publication Date
EP0647569A1 EP0647569A1 (fr) 1995-04-12
EP0647569B1 true EP0647569B1 (fr) 1998-06-10

Family

ID=6499376

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94105446A Expired - Lifetime EP0647569B1 (fr) 1993-10-04 1994-04-08 Piston pour cartouches

Country Status (6)

Country Link
EP (1) EP0647569B1 (fr)
AT (1) ATE167152T1 (fr)
DE (2) DE4333811A1 (fr)
DK (1) DK0647569T3 (fr)
ES (1) ES2119921T3 (fr)
SI (1) SI0647569T1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2302087B (en) * 1995-06-09 1999-01-27 Body Shop Int Plc Dispensing apparatus
CN107161503B (zh) * 2017-06-13 2020-08-07 南京工业职业技术学院 一种减少浪费的容纳壳

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3005855A1 (de) * 1980-02-16 1981-08-20 Alfred Fischbach Kg Kunststoff-Spritzgusswerk, 5250 Engelskirchen Bodenverschluss fuer einen hohlzylindrischen strangpressbehaelter
DE3148490C2 (de) * 1981-12-08 1986-02-13 Alfred Fischbach Kg Kunststoff-Spritzgusswerk, 5250 Engelskirchen Bodenverschluß für einen hohlzylindrischen Strangpreßbehälter
DE8710233U1 (fr) * 1987-07-25 1987-11-05 Alfred Fischbach Kg Kunststoff-Spritzgusswerk, 5250 Engelskirchen, De
DE9211218U1 (fr) * 1991-08-26 1993-01-21 Prestele, Eugen, 8900 Augsburg, De
DE4139744C2 (de) * 1991-12-03 1994-07-21 Alfred Fischbach Kunststoff Sp Kartusche für plastische Massen

Also Published As

Publication number Publication date
SI0647569T1 (en) 1998-08-31
EP0647569A1 (fr) 1995-04-12
DE4333811A1 (de) 1995-04-06
DE59406191D1 (de) 1998-07-16
ES2119921T3 (es) 1998-10-16
ATE167152T1 (de) 1998-06-15
DK0647569T3 (da) 1999-03-29

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