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EP1140371B1 - Ejection device for a cartridge - Google Patents

Ejection device for a cartridge Download PDF

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Publication number
EP1140371B1
EP1140371B1 EP99964671A EP99964671A EP1140371B1 EP 1140371 B1 EP1140371 B1 EP 1140371B1 EP 99964671 A EP99964671 A EP 99964671A EP 99964671 A EP99964671 A EP 99964671A EP 1140371 B1 EP1140371 B1 EP 1140371B1
Authority
EP
European Patent Office
Prior art keywords
cartridge
cap
expulsion
head plate
piston
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
EP99964671A
Other languages
German (de)
French (fr)
Other versions
EP1140371A1 (en
Inventor
Eugen Prestele
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.)
Sulzer Chemtech AG
Original Assignee
Sulzer Chemtech AG
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 Sulzer Chemtech AG filed Critical Sulzer Chemtech AG
Publication of EP1140371A1 publication Critical patent/EP1140371A1/en
Application granted granted Critical
Publication of EP1140371B1 publication Critical patent/EP1140371B1/en
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
    • B05C17/01—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 with manually mechanically or electrically actuated piston or the like
    • B05C17/0116—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 with manually mechanically or electrically actuated piston or the like characterised by the piston driving means
    • B05C17/0133—Nut and bolt advancing mechanism, e.g. threaded piston rods
    • 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
    • B05C17/00553—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 with means allowing the stock of material to consist of at least two different components
    • 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
    • B05C17/00553—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 with means allowing the stock of material to consist of at least two different components
    • B05C17/00559—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 with means allowing the stock of material to consist of at least two different components the different components being stored in coaxial chambers
    • 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
    • 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
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/32—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging two or more different materials which must be maintained separate prior to use in admixture
    • B65D81/325—Containers having parallel or coaxial compartments, provided with a piston or a movable bottom for discharging contents
    • 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
    • B65D83/76—Containers or packages with special means for dispensing contents for dispensing fluent contents by means of a piston
    • B65D83/761—Containers or packages with special means for dispensing contents for dispensing fluent contents by means of a piston the piston being actuated by a screw-shaft

Definitions

  • the invention relates to an ejection device for a cartridge according to the preamble of Claim 1.
  • Such a push-out device is known from US-A-2826339.
  • Displacement of the piston parts arranged inside the cartridge by an axial displaceable inner piston rod and a radially outer connected to it Hollow cylinder.
  • the axial displacement of the piston parts is either on the outside of the Piston rod or on the inside of the hollow cylinder, a thread provided with a corresponding counter thread in one arranged on the back of the cartridge Threaded bush is engaged.
  • FR-A-2501080 there is another device for pushing out a cartridge in which an inner piston is axially movable by a handle Rack and an outer ring piston via two connected to the rack opposite rods is slidable.
  • the object of the invention is to design a push-out device of the type mentioned at the beginning in such a way that a simple possibility of emptying is ensured, in particular that the mixer placed on the cartridge can be placed during emptying where the material of the cartridge is to be applied.
  • the cartridge shown in Figures 1 and 4 is a two-component Cartridge with an inner chamber 1 and an outer chamber 2 concentric therewith. Both chambers 1, 2 open into a cartridge outlet opening 3.
  • the chamber 1 is closed on the back by a piston 4 of circular cross section, while the chamber 2 is closed by an annular piston 5.
  • the volumes of the chambers 1, 2 correspond to the mixing ratio of the two in the Chambers 1, 2 contained components. This means that the ejection device Pistons 4, 5 to shift equal amounts in the direction of the outlet opening 3.
  • the ejection device has a cap 6, which is connected to the Back of the cartridge is connected.
  • the bayonet locks 7 serve as an axial lock for the cap 6, which is thus immovable in the axial direction with the back of the cartridge connected is.
  • the axial securing of the cap 6 on the back of the cartridge can also by means of a thread engagement between the cap and the cartridge.
  • the cap 6 has a central threaded bore 8, the thread of which is in engagement with the thread of a threaded spindle 9.
  • the threaded spindle 9 has a cylindrical Approach 10, which rests as a bearing against the piston 4.
  • the part of the threaded spindle 9 protruding from the cap 6 is in a head plate 11 rotatably mounted and ends in a wing-like protruding over the head plate 11 Handle 12.
  • three push rods 13 are provided, which are at a radial distance to the spindle 9, are arranged offset from one another by 120 °. These push rods 13 run from the head plate 11 parallel to the threaded spindle 9 in the direction of the cap 6 and are over Bores 14 passed through this cap into the interior of the cartridge.
  • On the Cartridge-side ends of the push rods 13 is annular through holes 15 Placed abutment 16, which rests against the annular piston 5.
  • Figures 1 and 4 show the starting position of the ejection device when filled and cartridge to be emptied.
  • the threaded bore 8 is in a sleeve 17 projecting beyond the plane of the cap 6 arranged.
  • Support ribs 18 run from the edge of the cap 6 to the sleeve 7.
  • the bore bearing the cylindrical projection 19 of the threaded spindle 9 is also in one Sleeve 20 is arranged, to which 11 support ribs 21 extend from the edge of the head plate.
  • the Threaded spindle 9 is supported with a shoulder 22 on the outside of the sleeve 20.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Coating Apparatus (AREA)
  • Feeding And Guiding Record Carriers (AREA)

Abstract

The invention relates to an ejection device for a cartridge which comprises two chambers (1, 2) arranged concentrically to one another. Each chamber (1, 2) is provided with a piston (4, 5). The ejection device also comprises ejection tappets which can be shifted in the direction of the outlet (3) of the cartridge. A cap (6) is provided which can be axially locked with the cartridge. The ejection tappets are guided through said cap (6). The external ends of the ejection tappets for the annular piston (5) are connected to one another via a top piece (11). A threaded spindle (9) is supported at the top piece (11). Said threaded spindle (9) extends through a threaded borehole (8) of the cap (6) and serves as an ejection tappet for the middle piston (4).

Description

Die Erfindung betrifft eine Ausdrückvorrichtung für eine Kartusche nach dem Oberbegriff des Anspruchs 1.The invention relates to an ejection device for a cartridge according to the preamble of Claim 1.

Eine derartige Ausdrückvorrichtung ist aus der US-A-2826339 bekannt. Dort erfolgt die Verschiebung der im Inneren der Kartusche angeordneten Kolbenteile durch eine axial verschiebbare innere Kolbenstange und einen mit dieser fest verbundenen radial äußeren Hohlzylinder. Zur Axialverschiebung der Kolbenteile ist entweder an der Außenseite der Kolbenstange oder an der Innenseite des Hohlzylinders ein Gewinde vorgesehen, das mit einem entsprechenden Gegengewinde in eine an der Rückseite der Kartusche angeordneten Gewindebuchse in Eingriff steht.Such a push-out device is known from US-A-2826339. There is the Displacement of the piston parts arranged inside the cartridge by an axial displaceable inner piston rod and a radially outer connected to it Hollow cylinder. The axial displacement of the piston parts is either on the outside of the Piston rod or on the inside of the hollow cylinder, a thread provided with a corresponding counter thread in one arranged on the back of the cartridge Threaded bush is engaged.

In der FR-A-2501080 ist eine weitere Vorrichtung zum Ausdrücken einer Kartusche offenbart, bei der ein innerer Kolben von einer durch einen Handgriff axial beweglichen Zahnstange und ein äußerer Ringkolben über zwei mit der Zahnstange verbundene gegenüberliegende Stangen verschiebbar ist.In FR-A-2501080 there is another device for pushing out a cartridge in which an inner piston is axially movable by a handle Rack and an outer ring piston via two connected to the rack opposite rods is slidable.

Aufgabe der Erfindung ist es, eine Ausdrückvorrichtung der Eingangs genannten Art so auszubilden, daß eine einfache Entleermöglichkeit gewährleistet ist,
insbesondere daß der auf die Kartusche aufgesetzte Mischer während des Entleerens dort angesetzt werden kann, wo das Material der Kartusche aufgebracht werden soll.The object of the invention is to design a push-out device of the type mentioned at the beginning in such a way that a simple possibility of emptying is ensured,
in particular that the mixer placed on the cartridge can be placed during emptying where the material of the cartridge is to be applied.

Gelöst wird diese Aufgabe mit den Merkmalen des Anspruches 1. Vorteilhafte Ausgestaltungen sind den Unteransprüchen entnehmbar.This problem is solved with the features of claim 1. Advantageous Refinements can be found in the subclaims.

Ein Ausführungsbeispiel wird nachfolgend anhand der Zeichnungen näher erläutert. Es zeigen:

Fig. 1
eine Seitenansicht der Kartusche mit Ausdrückvorrichtung;
Fig. 2
eine Ansicht in Richtung der Pfeile II-II;
Fig. 3
einen Schnitt längs der Linie III-III in Fig. 1;
Fig. 4
einen Schnitt längs der Linie IV-IV in Fig. 3;
Fig. 5
eine Draufsicht auf den bei der Kartusche verwendeten Ringkolben und
Fig. 6
einen Schnitt längs der Linie VI-VI in Fig. 5.
An embodiment is explained below with reference to the drawings. Show it:
Fig. 1
a side view of the cartridge with ejection device;
Fig. 2
a view in the direction of arrows II-II;
Fig. 3
a section along the line III-III in Fig. 1;
Fig. 4
a section along the line IV-IV in Fig. 3;
Fig. 5
a plan view of the piston used in the cartridge and
Fig. 6
a section along the line VI-VI in Fig. 5th

Die in den Figuren 1 und 4 dargestellte Kartusche ist eine zwei-Komponenten aufweisende Kartusche mit einer inneren Kammer 1 und einer dazu konzentrischen äußeren Kammer 2. Beide Kammern 1, 2 münden in einer Kartuschenaustrittsöffnung 3.The cartridge shown in Figures 1 and 4 is a two-component Cartridge with an inner chamber 1 and an outer chamber 2 concentric therewith. Both chambers 1, 2 open into a cartridge outlet opening 3.

Die Kammer 1 ist rückseitig durch einen Kolben 4 kreisförmigen Querschnitts verschlossen, während die Kammer 2 durch einen kreisringförmigen Kolben 5 verschlossen ist.The chamber 1 is closed on the back by a piston 4 of circular cross section, while the chamber 2 is closed by an annular piston 5.

Die Volumen der Kammern 1, 2 entsprechen dem Mischungsverhältnis der beiden in den Kammern 1, 2 enthaltenen Komponenten. Dies bedeutet, daß die Ausdrückvorrichtung die Kolben 4, 5 um gleiche Beträge in Richtung der Austrittsöffnung 3 zu verschieben hat.The volumes of the chambers 1, 2 correspond to the mixing ratio of the two in the Chambers 1, 2 contained components. This means that the ejection device Pistons 4, 5 to shift equal amounts in the direction of the outlet opening 3.

Die Ausdrückvorrichtung weist eine Kappe 6 auf, welche über Bajonettverschlüsse 7 mit der Rückseite der Kartusche verbunden ist. Die Bajonettverschlüsse 7 dienen als Axialsicherung für die Kappe 6, die somit in axialer Richtung unverschiebbar mit der Rückseite der Kartusche verbunden ist. Die Axialsicherung der Kappe 6 an der Rückseite der Kartusche kann auch durch einen Gewindeeingriffzwischen Kappe und Kartusche erfolgen.The ejection device has a cap 6, which is connected to the Back of the cartridge is connected. The bayonet locks 7 serve as an axial lock for the cap 6, which is thus immovable in the axial direction with the back of the cartridge connected is. The axial securing of the cap 6 on the back of the cartridge can also by means of a thread engagement between the cap and the cartridge.

Die Kappe 6 weist eine mittige Gewindebohrung 8 auf, deren Gewinde in Eingriff steht mit dem Gewinde einer Gewindespindel 9. Die Gewindespindel 9 weist einen zylindrischen Ansatz 10 auf, der als Wiederlager gegen den Kolben 4 anliegt.The cap 6 has a central threaded bore 8, the thread of which is in engagement with the thread of a threaded spindle 9. The threaded spindle 9 has a cylindrical Approach 10, which rests as a bearing against the piston 4.

Der aus der Kappe 6 überstehende Teil der Gewindespindel 9 ist in einer Kopfplatte 11 drehbar gelagert und endet in einem über die Kopfplatte 11 überstehenden flügelartigen Handgriff 12.The part of the threaded spindle 9 protruding from the cap 6 is in a head plate 11 rotatably mounted and ends in a wing-like protruding over the head plate 11 Handle 12.

Zur Kopfplatte 11 einstückig sind drei Druckstangen 13 vorgesehen, die in radialem Abstand zur Spindel 9, zueinander um 120° versetzt angeordnet sind. Diese Druckstangen 13 verlaufen von der Kopfplatte 11 parallel zur Gewindespindel 9 in Richtung der Kappe 6 und sind über Bohrungen 14 durch diese Kappe in das Innere der Kartusche geführt. Auf die kartuschenseitigen Enden der Druckstangen 13 ist über Bohrungen 15 ein ringförmiges Wiederlager 16 aufgesetzt, welches gegen den Ringkolben 5 anliegt.To the head plate 11 in one piece, three push rods 13 are provided, which are at a radial distance to the spindle 9, are arranged offset from one another by 120 °. These push rods 13 run from the head plate 11 parallel to the threaded spindle 9 in the direction of the cap 6 and are over Bores 14 passed through this cap into the interior of the cartridge. On the Cartridge-side ends of the push rods 13 is annular through holes 15 Placed abutment 16, which rests against the annular piston 5.

Die Figuren 1 und 4 zeigen die Ausgangsstellung der Ausdrückvorrichtung bei gefüllter und zu entleerender Kartusche.Figures 1 and 4 show the starting position of the ejection device when filled and cartridge to be emptied.

Nachdem die Kappe 6 über die Bajonettverschlüsse 7 auf die Rückseite der Kartusche aufgesetzt ist, wird über den Handgriff 12 die Gewindespindel 9 gedreht, die sich über das Gewinde der Gewindebohrung 8 in das Innere der Kartusche einschraubt. Durch das an der Rückseite des Kolbens 4 anliegende Wiederlager 10 wird dieser Kolben 4 in Richtung der Kartuschenaustrittsöffnung 3 verschoben. Da die Axialbewegung der Gewindespindel 9 auch von der Kopfplatte 11 ausgeführt wird, werden synchron zur Gewindespindel 9 auch die Druckstangen 13 in Richtung der Kartusche bewegt. Deren Widerlager 16 verschiebt somit den Kolben 5 synchron zum Kolben 4.After the cap 6 over the bayonet catches 7 on the back of the cartridge is placed on the handle 12, the threaded spindle 9 is rotated, which is about Screw the thread of the threaded hole 8 into the inside of the cartridge. By that at the Back of the piston 4 abutment 10, this piston 4 in the direction of Cartridge outlet opening 3 shifted. Since the axial movement of the threaded spindle 9 also is executed by the head plate 11, the synchronous to the threaded spindle 9 also Push rods 13 moved in the direction of the cartridge. Their abutment 16 thus moves the piston 5 in synchronism with the piston 4.

Die Gewindebohrung 8 ist in einer über die Ebene der Kappe 6 überstehenden Hülse 17 angeordnet. Vom Rand der Kappe 6 verlaufen Stützrippen 18 zur Hülse 7. The threaded bore 8 is in a sleeve 17 projecting beyond the plane of the cap 6 arranged. Support ribs 18 run from the edge of the cap 6 to the sleeve 7.

Die den zylindrischen Ansatz 19 der Gewindespindel 9 lagernde Bohrung ist ebenfalls in einer Hülse 20 angeordnet, zu welcher vom Rand der Kopfplatte 11 Stützrippen 21 verlaufen. Die Gewindespindel 9 stützt sich mit einem Ansatz 22 an der Außenseite der Hülse 20 ab.The bore bearing the cylindrical projection 19 of the threaded spindle 9 is also in one Sleeve 20 is arranged, to which 11 support ribs 21 extend from the edge of the head plate. The Threaded spindle 9 is supported with a shoulder 22 on the outside of the sleeve 20.

Enthält das in den Kammern 1, 2 befindliche Material flüchtige Kunststoffbestandteile, wie z. B. Styrol, dann ist es erforderlich, daß die Kolben 4 bzw. 5 gegen das Ausgasen solcher Stoffe beständig sind. Die Kolben werden daher, wie in den Figuren 5 und 6 verdeutlicht, aus Polyamid hergestellt. Da dieses Material jedoch zu hart für die Ausbildung von Dichtlippen ist, werden diese in low-density-Polyethylen ausgeführt. Bei der Herstellung wird zuerst der eigentliche Kolben 4 bzw. 5 spritztechnisch aus Polyamid hergestellt. Bei einem sich daran anschließenden zweiten Arbeitsvorgang werden die Dichtlippen 23 aus LDPE angespritzt.Contains the material located in chambers 1, 2 volatile plastic components such. B. styrene, then it is necessary that the pistons 4 and 5 against the outgassing of such substances are stable. The pistons are therefore, as shown in Figures 5 and 6, from Made of polyamide. However, since this material is too hard for the formation of sealing lips is, these are carried out in low-density polyethylene. When manufacturing, the actual pistons 4 and 5 are injection molded from polyamide. With one yourself Subsequent second operation, the sealing lips 23 are molded from LDPE.

Claims (6)

  1. Expulsion device for a cartridge containing two components which contains an inner chamber (1), an outer chamber (2) concentric therewith, and pistons (4, 5) closing the rear sides of the chambers (1, 2), with a cap (6) which can be fitted onto the rear side of the cartridge and locked to it axially, with a central expulsion plunger which is co-axial with the axis of the cartridge and consists of a threaded spindle (9) engaging with a threaded bore (8) in the cap (6) and exhibits an abutment (10) for bearing on the piston (4) belonging to the inner chamber (2), and with further expulsion plungers which are arranged a radial distance from the central expulsion plunger and exhibit an abutment (16) to bear on the piston (5) belonging to the outer chamber (1), characterised in that the threaded spindle (9) is mounted rotatably in a head plate (11) and in that the further expulsion plungers are three thrust rods (13) which are offset at 120° to one another and are formed in one piece with the head plate (11) and passed through second bores (14) in the cap (6).
  2. Expulsion device according to claim 1, characterised in that the threaded bore (8) is arranged in a sleeve (17) which projects beyond the cap (6) and is formed in one piece with the latter and to which reinforcing ribs (18) run from the edge of the cap (6).
  3. Expulsion device according to claim 1 or 2, characterised in that the threaded spindle (9) is mounted in a bore in the head plate (11) which is arranged in a sleeve (20) which is made in one piece with this head plate (11) and to which reinforcing ribs (21) run from the edge of the head plate (11).
  4. Expulsion device according to one of claims 1 to 5, characterised in that the cap (6) and the rear side of the cartridge can be connected to one another by means of bayonet fastenings (7) or by means of a thread.
  5. Expulsion device according to one of claims 1 to 4, characterised in that the thrust rods (13) are connected to a common annular abutment (16).
  6. Expulsion device according to one of claims 1 to 5, characterised in that the pistons (4, 5) are made of polyamide and their sealing lips (23) of a low-density polyethylene, the sealing lips (23) being moulded to the pistons (5, 6).
EP99964671A 1998-12-30 1999-12-23 Ejection device for a cartridge Expired - Lifetime EP1140371B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE29823237U DE29823237U1 (en) 1998-12-30 1998-12-30 Ejection device for a cartridge
DE29823237U 1998-12-30
PCT/EP1999/010360 WO2000040341A1 (en) 1998-12-30 1999-12-23 Ejection device for a cartridge

Publications (2)

Publication Number Publication Date
EP1140371A1 EP1140371A1 (en) 2001-10-10
EP1140371B1 true EP1140371B1 (en) 2002-07-17

Family

ID=8067314

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99964671A Expired - Lifetime EP1140371B1 (en) 1998-12-30 1999-12-23 Ejection device for a cartridge

Country Status (4)

Country Link
US (1) US6520381B1 (en)
EP (1) EP1140371B1 (en)
DE (2) DE29823237U1 (en)
WO (1) WO2000040341A1 (en)

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ITRM20020260A1 (en) * 2002-05-10 2003-11-10 Giacomo Mealli DEVICE FOR INSTANT MIXING OF TWO-COMPONENT PRODUCTS.
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CA2662872C (en) * 2006-09-08 2015-11-17 A.C. Dispensing Equipment, Inc. Cartridge based fluid dispensing apparatus
CH698343A2 (en) * 2008-01-11 2009-07-15 Medmix Systems Ag Discharge WITH TURNING DEVICE.
SE535983C2 (en) * 2010-04-20 2013-03-19 Noviscens Ab Syringe
AU2011278052A1 (en) * 2010-07-16 2013-01-31 Mcgill Technology Limited Dispensing apparatus
US9358715B2 (en) 2012-04-13 2016-06-07 Kyphon SÀRL Mixer gun system and method
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US6520381B1 (en) 2003-02-18
DE59902084D1 (en) 2002-08-22
WO2000040341A1 (en) 2000-07-13
DE29823237U1 (en) 1999-02-25
EP1140371A1 (en) 2001-10-10

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