EP0647569B1 - Piston for cartridges - Google Patents

Piston for cartridges Download PDF

Info

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)
French (fr)
Other versions
EP0647569A1 (en
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
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
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/en
Publication of EP0647569A1 publication Critical patent/EP0647569A1/en
Application granted granted Critical
Publication of EP0647569B1 publication Critical patent/EP0647569B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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)
  • Fluid-Damping Devices (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Coating Apparatus (AREA)

Abstract

The sealing of cartridges, in which a liquid is stored and from which the liquid can be conveyed in each case by means of a piston which is axially movable in the cartridge, is all the more problematic, the more highly viscous said liquid is because considerable internal pressures then occur during delivery. By means of pressure pieces (3) which are appropriately provided on the piston and are charged with the compression force (F) providing the delivery, the invention ensures that the pressing-on force of the piston against the wall of the cartridge increases with an increasing internal pressure. <IMAGE>

Description

Die Erfindung betrifft einen Kolben für eine Kartusche, in der eine insbesondere hochviskose Flüssigkeit vorrätig gehalten und mittels des in der Kartusche längsverschiebbaren Kolbens aus der Kartusche dadurch förderbar ist, daß der Kolben einer axial wirkenden Druckkraft aussetzbar ist, der Kolben einstückig bestehend aus einem hohlzylindrischen Kolbenmantel und einem an dem Kolbenmantel auf dessen der Flüssigkeit zugewandten Seite als Druckfläche auf die Flüssigkeit wirkenden, gewölbten Kolbenboden, wobei eine in der Kartusche axial verschiebbare Druckplatte vorgesehen ist, durch welche der Kolben mit der Druckkraft in Richtung der Flüssigkeit belastbar ist. Ein derartiger Kolben ist aus der DE-U-92 11 218.8 bekannt.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. Such a piston is known from DE-U-92 11 218.8.

Kartuschen mit einem Kolben dieser Art werden in großem Umfang für die konfektionierte Bereitstellung von Dichtungs- und Klebemitteln oder dergleichen hochviskosen Flüssigkeiten verwendet. Die Flüssigkeiten werden dabei mittels geeigneter Dosierpistolen aus den Kartuschen direkt an den Werkstücken ausgetragen. Die Dosierpistolen sind so eingerichtet, daß auf den Kolben eine von Hand unmittelbar aufgebrachte mechanische Druckkraft ausgeübt oder eine solche Druckkraft zunächst pneumatisch erzeugt wird. In jedem Falle erhöht sich dabei der Innendruck in der Kartusche, umso stärker, je zäher - bei sonst gleichen, insbesondere gleichen raumgeometrischen Bedingungen - die betreffende Flüssigkeit ist. Es besteht die Gefahr, daß dadurch eine einwandfreie Abdichtung des Kolbens nicht mehr gewährleistet werden kann und Verluste an der zu verarbeitenden Flüssigkeit und deren Austrag in unerwünschte Bereiche erfolgen.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.

Die Erfindung hat sich deshalb die Aufgabe gestellt, einen Kolben der eingangs näher bezeichneten Art so auszubilden, daß eine Abdichtung der Kartusche auch dann sichergestellt ist, wenn der die Flüssigkeit enthaltende Innenraum der Kartusche einem erhöhten Druck dann ausgesetzt ist, wenn auf den Kolben eine Druckkraft ausgeübt wird.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.

Erfindungsgemäß wird die Aufgabe mit den Merkmalen des Anspruches 1 gelöst.According to the invention the task with the features of Claim 1 solved.

Bei einer solchen Anordnung nimmt der äußere Durchmesser des Kolbenmantels unter dem Einfluß der Druckkraft zu, insbesondere in einem durch die Anschlüsse der Druckstücke gekennzeichneten Bereich, und zwar so lange, bis er an der Wandung der Kartusche anliegt; zunehmende Druckkraft erhöht die Dichtkraft an dieser Wandung und verbessert damit die Abdichtung.With such an arrangement, 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.

Es ist zweckmäßig, wenn die Druckstücke gleichförmig am Umfang des Kolbenmantels verteilt angeordnet sind, um eine gleichförmige Belastung des Kolbens zu erreichen, wobei sie am besten in der Nähe des Kolbenbodens in den Kolbenmantel eingespannt sind, damit die Dehnbarkeit des gewölbten Kolbenbodens unmittelbar ausgenutzt wird, um gerade in diesem Bereich eine Spaltbildung zwischen dem äußeren Umfang des Kolbenmantels und der Wandung der Kartusche zu vermeiden.It is useful if the pressure pieces on the uniform Circumference of the piston skirt are arranged to to achieve a uniform load on the piston, best near the piston crown in the Piston jacket are clamped so that the extensibility of the curved piston crown is used immediately, to create a gap between them in this area in particular the outer circumference of the piston skirt and the wall to avoid the cartridge.

In einfacher Weise können die Druckstücke mit dem Kolbenmantel und dem Kolbenboden einstückig ausgebildet sein. Der Zwickel im Anschlußbereich des Kolbenbodens an dem Kolbenmantel kann in einer für den Kräfteverlauf besonders günstigen Weise dadurch ausgestaltet werden, daß an diesem Übergang von dem Kolbenboden in den Kolbenmantel an dessen innerem Umfang ein Ringbund vogesehen ist, an dem die Druckstücke angeschlossen sind.In a simple manner, 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.

Eine langanhaltende Arbeitsfähigkeit des erfindungsgemäßen Kolbens läßt sich erreichen, wenn am dem äußeren Umfang des Kolbenmantels radiale Schmierrillen oder - taschen vorgesehen sind, und die Abdichtung kann verbessert werden, wenn am dem äußeren Umfang des Kolbenmantels radiale Dichtlippen vorgesehen sind.A long-lasting ability to work of the invention 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.

Erfindungsgemäß ausgebildete Kolben können vorteilhaft aus einem Gummi, einem gummiähnlichen Werkstoff oder einem elastischen Kunststoff bestehen; sie sind dann billig als Spritzteile herstellbar und besonders funktionstüchtig.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.

Die Einzelheiten der Erfindung werden nachstehend an Hand der Zeichnung an einem Ausführungsbeispiel näher beschrieben. Es zeigen

Fig. 1
einen erfindungsgemäßen Kolben in einem mittigen Längsschnitt und
Fig. 2
eine Druntersicht auf Fig.1, beide in schematisch vereinfachter Darstellung.
The details of the invention are described below with reference to the drawing of an embodiment. Show it
Fig. 1
a piston according to the invention in a central longitudinal section and
Fig. 2
a bottom view of Figure 1, both in a schematic simplified representation.

Ein erfindungsgemäßer Kolben besteht im wesentlichen einstückig aus einem hohlkreiszylindrischen Kolbenmantel 1 und einem Kolbenboden 2. Der Kolbenmantel 1 ist an seinem äußeren Umfang 11 mit mehreren radial umlaufenden Dichtlippen 12 ausgerüstet, die sich dichtend an die Wandung der in der Zeichnung weggelassenen Kartusche legen, innerhalb derer der Kolben in axialer Richtung bewegbar ist. Einige Schmierrillen 13, in denen ein Schmiermittel bevorratet ist, gewährleisten eine lang andauernde Leichtgängigkeit des Kolbens in der Kartusche.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.

Unter dem Einfluß einer axialen Druckkraft F wird der Kolben von einer Druckplatte 5 in Richtung der vor dem Kolbenboden 2 befindlichen, aus der Kartusche auszutreibenden Flüssigkeit bewegt. Zur Einleitung der Druckkraft F sind mehrere gleichförmig an dem inneren Umfang 14 des Kolbenmantels 1 verteilte Druckstücke 3 vorgesehen, an deren Anschlagfläche 31 die Druckplatte 5 anschlägt. Die Druckstücke 3 sind aus einem Druckring 30 durch Trennschlitze 32 gebildet worden, dessen schräg nach innen abgewinkelter Ringquerschnitt an einem Ringbund 4 anschließend ausgebildet ist, so daß ein (breit eingespannter) einarmiger Hebel entsteht.Under the influence of an axial pressure force F, the piston from a pressure plate 5 in the direction of the front of the piston crown 2 located to be expelled from the cartridge Liquid moves. To initiate the pressure force F are several uniformly on the inner periphery 14 of the piston skirt 1 distributed pressure pieces 3 provided on the stop surface 31 strikes the pressure plate 5. The pressure pieces 3 are from a pressure ring 30 through separating slots 32 been formed, its angled inward Ring cross section subsequently formed on a collar 4 is, so that a (broadly clamped) one-armed lever arises.

Die Belastung des an der Anschlagfläche 31 befindlichen Hebelendes führt zu einer (allseits radial gerichteten) Kraftkomponente, die den Kolbenmantel 1 gegen die Wandung der Kartusche preßt. Durch die gewölbte Ausbildung des Kolbenbodens 2 kann dieser dabei gegebenenfalls auch geringfügig gestreckt werden; außerdem ist auf diese Weise dafür gesorgt, daß beim Einführen des Kolbens die in der Kartusche überschüssige Luft entweichen und - entsprechende Gestaltung der Kartusche vorausgesetzt - die Flüssigkeit möglichst vollständig aus der Kartusche förderbar ist. Eine Versteifung des Kolbenbodens 2 durch einen Bund 21 dient dem gleichen Zweck. The load on the lever end located on the stop surface 31 leads to a (radially directed on all sides) Force component that the piston skirt 1 against the wall the cartridge squeezes. Due to the curved design of the piston crown 2, this may also be slight be stretched; also in this way is for it worried that when inserting the plunger into the cartridge excess air escape and - appropriate design provided the cartridge - the liquid if possible is completely conveyable from the cartridge. A Stiffening of the piston crown 2 by a collar 21 is used the same purpose.

Eine Versteifung des Kolbenmantels 1 hingegen läßt sich durch an dessen innerem Umfang 14 vorgesehene Längsrippen 15 erreichen. Die damit vorgegebene Formstabilität läßt es geraten erscheinen, das kolbenbodenseitige Ende des Kolbenmantels 1 an seinem äußeren Umfang 11 anzufassen, so daß eine Schräge 16 die Einführung des Kolbens in die Kartusche erleichtert. A stiffening of the piston skirt 1, however, 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.

Aufstellung der BezugszeichenList of reference numbers

11
KolbenmantelPiston skirt
1111
Umfangscope
1212th
DichtlippeSealing lip
1313
SchmierrilleGreasing groove
1414
Umfangscope
1515
LängsrippeLongitudinal rib
1616
SchrägeWeird
22nd
KolbenbodenPiston crown
2121
BundFederation
33rd
DruckstückPressure piece
3030th
DruckringPressure ring
3131
AnschlagflächeAbutment surface
3232
TrennschlitzSeparation slot
44th
RingbundRing collar
55
Druckplatteprinting plate
FF
DruckkraftPressure force

Claims (8)

  1. A piston (1, 2) for a cartridge, in which a liquid, in particular a highly viscous liquid, is stored and, by means of the piston (1, 2) longitudinally displaceable in the cartridge, is expellable therefrom as a result of the piston (1, 2) being subjectable to an axially acting thrust force, the piston (1, 2) integrally comprising a hollow cylindrical piston skirt (1) and a curved piston base (2) acting on the liquid as a pressure surface on the piston skirt (1) on the side thereof facing the liquid, wherein a pressure plate (5) is provided which is axially displaceable in the cartridge and by means of which the piston (1, 2) is subjectable to the thrust force (F) in the direction of the liquid, characterised in that:
    a) a plurality of thrust pieces (3) are provided on the inner circumference (14) of the piston skirt (1) in such a manner that they are uniformly loadable by the pressure plate (5) when the latter is subjected to the thrust force (F);
    b) the thrust pieces (3) are each formed as one-armed levers mounted in the piston skirt (1) and extending obliquely inwards radially and axially towards the pressure plate (5);
    c) the piston is elastically deformable under the effect of the thrust force (F), and in that
    d) the thrust pieces (3) are formed from a thrust collar (30) by means of radial dividing slots (32) distributed over the circumference thereof.
  2. A piston according to claim 1, characterised in that the thrust pieces (3) are uniformly distributed over the circumference (14) of the piston skirt (1).
  3. A piston according to claim 1 or 2, characterised in that the thrust pieces (3) are mounted in the piston skirt (1) in the vicinity of the piston base (2).
  4. A piston according to any one of claims 1 to 3, characterised in that the thrust pieces (3) are formed integrally with the piston skirt (1) and the piston base (2).
  5. A piston according to any one of claims 1 to 4, characterised in that an annular collar (4), to which the thrust pieces (3) are connected, is provided at the transition between the piston base (2) and the piston skirt (1) on the inner circumference (14) thereof.
  6. A piston according to any one of claims 1 to 5, characterised in that radial lubricating grooves or pockets (13) are provided on the outer circumference (11) of the piston skirt (1).
  7. A piston according to any one of claims 1 to 6, characterised in that radial sealing lips (12) are provided on the outer circumference (11) of the piston skirt (1).
  8. A piston according to any one of claims 1 to 7, characterised in that it comprises a rubber, a rubber-like material or a resilient plastics.
EP94105446A 1993-10-04 1994-04-08 Piston for cartridges Expired - Lifetime EP0647569B1 (en)

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
DE4333811 1993-10-04
DE4333811A DE4333811A1 (en) 1993-10-04 1993-10-04 Pistons for pumping low to high viscosity liquids from cartridges

Publications (2)

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

Family

ID=6499376

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94105446A Expired - Lifetime EP0647569B1 (en) 1993-10-04 1994-04-08 Piston for cartridges

Country Status (6)

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

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 (en) * 2017-06-13 2020-08-07 南京工业职业技术学院 Waste-reducing accommodating shell

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3005855A1 (en) * 1980-02-16 1981-08-20 Alfred Fischbach Kg Kunststoff-Spritzgusswerk, 5250 Engelskirchen FLOOR LOCK FOR A CAVITY EXTRUSION CONTAINER
DE3148490C2 (en) * 1981-12-08 1986-02-13 Alfred Fischbach Kg Kunststoff-Spritzgusswerk, 5250 Engelskirchen Bottom closure for a hollow cylindrical extrusion container
DE8710233U1 (en) * 1987-07-25 1987-11-05 Alfred Fischbach Kg Kunststoff-Spritzgusswerk, 5250 Engelskirchen, De
DE9211218U1 (en) * 1991-08-26 1993-01-21 Prestele, Eugen, 8900 Augsburg, De
DE4139744C2 (en) * 1991-12-03 1994-07-21 Alfred Fischbach Kunststoff Sp Cartridge for plastic masses

Also Published As

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

Similar Documents

Publication Publication Date Title
EP0254969B1 (en) Apparatus for extruding pastes
DE3405547A1 (en) PRESSING PISTON FOR CONTAINERS
EP0081145B1 (en) End closure for a hollow cylindrical extrusion pressure container
DE2845920B1 (en) Seal for reciprocating machine elements
DE1282522B (en) Spray head for expressing a liquid mixture
DE19645393C1 (en) Pump for flowable media, particularly cosmetic pump
CH648235A5 (en) FLOOR LOCKING FOR A CYLINDRICAL EXPRESS CONTAINER.
DE2560201C2 (en) Piston-cylinder arrangement with sealing hose
DE19504207C5 (en) working cylinder
EP0647569B1 (en) Piston for cartridges
DE2009487C3 (en) pressure vessel
DE3033042C2 (en) Means for forcing during the development of a shot in ammunition for a smoothbore weapon
CH634392A5 (en) PISTON CYLINDER ARRANGEMENT, IN PARTICULAR FOR SPRAY CARTRIDGES FOR LIQUIDS WITH HIGH VISCOSITY.
DE2152641A1 (en) Damping device for a hydraulic pressure piston
DE2651167B2 (en) Arrangement for braking free pistons driven in a tube with great acceleration
AT503699B1 (en) DAMPERS FOR FURNITURE, ESPECIALLY FOR EXTRACTION GUIDES OF FURNITURE
DE7627128U1 (en) Pistons preferably made of plastic, especially for a bulk container
DE2452221A1 (en) Hydrodynamic working cylinder - incorporates sealing sleeve for working piston with gap between sleeve and cylinder
EP0505900A1 (en) Dispenser for fluids
DE2619335A1 (en) Conveyor roller bearing sealing system - has end cap fitted with flange and taper face locating sealing ring
EP0204110B1 (en) Sealing device for a piston-type accumulator
EP0754929B1 (en) Device for attaching a cartridge case to a projectile
EP0464356B1 (en) Plunger-type cylinder
DE202017002680U1 (en) Container for a spray gun and device for spraying or spraying a substance with such a container
DE10029799A1 (en) Cartridge for paste-like material; has cylindrical body and piston with curved front, whose diameter is smaller than inner diameter of body and has side wall with expansion ring at rear

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

RAX Requested extension states of the european patent have changed

Free format text: SI PAYMENT 940416

17P Request for examination filed

Effective date: 19951005

17Q First examination report despatched

Effective date: 19960827

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO MILANO S.P.A.

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: SI PAYMENT 940416

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980610

REF Corresponds to:

Ref document number: 167152

Country of ref document: AT

Date of ref document: 19980615

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: LUCHS & PARTNER PATENTANWAELTE

Ref country code: CH

Ref legal event code: EP

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19980615

REF Corresponds to:

Ref document number: 59406191

Country of ref document: DE

Date of ref document: 19980716

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: GERMAN

REG Reference to a national code

Ref country code: PT

Ref legal event code: SC4A

Free format text: AVAILABILITY OF NATIONAL TRANSLATION

Effective date: 19980623

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2119921

Country of ref document: ES

Kind code of ref document: T3

ET Fr: translation filed
PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLAV Examination of admissibility of opposition

Free format text: ORIGINAL CODE: EPIDOS OPEX

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

PLAV Examination of admissibility of opposition

Free format text: ORIGINAL CODE: EPIDOS OPEX

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

26 Opposition filed

Opponent name: RAYTEC B.V.

Effective date: 19990305

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

NLR1 Nl: opposition has been filed with the epo

Opponent name: RAYTEC B.V.

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PT

Payment date: 20010312

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: MC

Payment date: 20010313

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 20010322

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IE

Payment date: 20010323

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20010329

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20010402

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20010404

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DK

Payment date: 20010410

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20010411

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20010418

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20010425

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20010426

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20010430

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20010522

Year of fee payment: 8

PLBO Opposition rejected

Free format text: ORIGINAL CODE: EPIDOS REJO

APAC Appeal dossier modified

Free format text: ORIGINAL CODE: EPIDOS NOAPO

APAE Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOS REFNO

APAC Appeal dossier modified

Free format text: ORIGINAL CODE: EPIDOS NOAPO

APAC Appeal dossier modified

Free format text: ORIGINAL CODE: EPIDOS NOAPO

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

APAC Appeal dossier modified

Free format text: ORIGINAL CODE: EPIDOS NOAPO

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020408

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020408

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020408

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020408

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020408

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020409

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020409

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020430

Ref country code: DK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020430

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020430

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020430

APAC Appeal dossier modified

Free format text: ORIGINAL CODE: EPIDOS NOAPO

PLBN Opposition rejected

Free format text: ORIGINAL CODE: 0009273

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: OPPOSITION REJECTED

27O Opposition rejected

Effective date: 20020617

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20021031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20021101

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20021101

EUG Se: european patent has lapsed

Ref document number: 94105446.2

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20020408

NLR2 Nl: decision of opposition
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20021231

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20021101

REG Reference to a national code

Ref country code: PT

Ref legal event code: MM4A

Free format text: LAPSE DUE TO NON-PAYMENT OF FEES

Effective date: 20021031

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20030514

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050408

APAH Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOSCREFNO