DE29800594U1 - Venting device - Google Patents

Venting device

Info

Publication number
DE29800594U1
DE29800594U1 DE29800594U DE29800594U DE29800594U1 DE 29800594 U1 DE29800594 U1 DE 29800594U1 DE 29800594 U DE29800594 U DE 29800594U DE 29800594 U DE29800594 U DE 29800594U DE 29800594 U1 DE29800594 U1 DE 29800594U1
Authority
DE
Germany
Prior art keywords
piston
pocket
ventilation device
micropore filter
ventilation
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
DE29800594U
Other languages
German (de)
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
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
Application filed by Individual filed Critical Individual
Priority to DE29800594U priority Critical patent/DE29800594U1/en
Publication of DE29800594U1 publication Critical patent/DE29800594U1/en
Priority to DE59805244T priority patent/DE59805244D1/en
Priority to EP98966418A priority patent/EP0966331B1/en
Priority to PCT/EP1998/008502 priority patent/WO1999036188A1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • 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
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0037—Containers
    • B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
    • B05B11/0044—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Use In Laboratory Experiments (AREA)
  • Massaging Devices (AREA)
  • Arc Welding In General (AREA)
  • External Artificial Organs (AREA)
  • Compressor (AREA)

Description

EntlüftungsvorrichtungVentilation device

Die Neuerung betrifft eine Entlüftungsvorrichtung zum Entfernen der Restluft beim Einsetzen eines Kolbens in eine gefüllte Kartusche mit einer von der Kolbenoberfläche ins Freie verlaufenden Entlüftungsbohrung.The innovation concerns a venting device for removing residual air when inserting a piston into a filled cartridge with a vent hole running from the piston surface to the outside.

Werden Kolben in gefüllte Kartuschen eingesetzt, dann ist es erforderlich, die Restluft zwischen dem Füllmaterial und dem Kolben zu entfernen. Hierbei ist es bekannt, beim Einsetzen des Kolbens gleichzeitig einen Draht zwischen dem Kolben und der Wand der Kartusche einzuführen, so daß die Restluft beim Einsetzen des Kolbens im Bereich des Drahtes herausgedrückt wird. Diese Restluftbeseitigung ist sehr zeitaufwendig und beinhaltet zudem die Gefahr, daß die Dichtlippen am Kolben beschädigt werden können.If pistons are inserted into filled cartridges, it is necessary to remove the residual air between the filling material and the piston. It is known to do this by inserting a wire between the piston and the wall of the cartridge at the same time as inserting the piston, so that the residual air is pressed out in the area of the wire when the piston is inserted. This removal of residual air is very time-consuming and also carries the risk that the sealing lips on the piston could be damaged.

Es ist weiterhin bekannt, am Kolben Entlüftungsbohrungen vorzusehen, über welche beim Einsetzen des Kolbens die Restluft entweichen kann. Diese Entlüftungsbohrungen werden anschließend durch Verschlußteile verschlossen. Diese Art der Restluftbeseitigung ist jedoch sehr zeitaufwendig.It is also known to provide vent holes on the piston through which the residual air can escape when the piston is inserted. These vent holes are then closed with closure parts. However, this type of residual air removal is very time-consuming.

Desweiteren ist es bekannt, am Kolben Entlüftungsventile vorzusehen, die beim Einsetzen des Kolbens in die Kartusche mittels speziell geformter Kolben-Eindrückstössel geöffnet werden. Dies bedingt speziell angepaßte Eindrückstössel und erfodert relativ enge Fertigungstoleranzen bei den Entlüftungsventilen. Diese Entlüftungsventile haben sich zudem als störanfällig erwiesen.It is also known to provide vent valves on the piston, which are opened by means of specially shaped piston push-in tappets when the piston is inserted into the cartridge. This requires specially adapted push-in tappets and requires relatively tight manufacturing tolerances for the vent valves. These vent valves have also proven to be susceptible to failure.

Es besteht die Aufgabe, die Entlüftungsvorrichtung so auszubilden, daß ein Entlüften beim Einsetzen des Kolbens ohne zusätzliche Manipulationen möglich ist.The task is to design the venting device in such a way that venting is possible when inserting the piston without additional manipulation.

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 embodiments can be found in the subclaims.

Ausfuhrungsbeispiele werden nachfolgend an Hand der Zeichnungen näher erläutert. Es zeigen:Examples of implementation are explained in more detail below using the drawings. They show:

Fig. 1 einen Schnitt durch das offene Kartuschenende und durch einen Kolben;Fig. 1 is a section through the open cartridge end and through a piston;

Fig. 2 eine Draufsicht auf diesen Kolben;Fig. 2 is a plan view of this piston;

Fig. 3 eine Seitenansicht und eine Draufsicht auf das Mikroporenfilter; und Fig. 3 is a side view and a top view of the micropore filter; and

Fig. 4 einen Schnitt durch einen Ringkolben für eine Zweikomponenten-Kartusche.Fig. 4 a section through an annular piston for a two-component cartridge.

Gemäß Figur 1 wird der Kolben 1 in das offene Ende einer Kartusche 2 eingesetzt, welche zuvor befullt wurde. An beiden Enden weist der Kolben 1 Dichtlippen 3, 4 auf, wobei die Elastizität der der Kartusche 2 zugewandten Dichtlippe 3 erzielt wird durch einen umlaufenden Einschnitt 5.According to Figure 1, the piston 1 is inserted into the open end of a cartridge 2, which was previously filled. The piston 1 has sealing lips 3, 4 at both ends, whereby the elasticity of the sealing lip 3 facing the cartridge 2 is achieved by a circumferential incision 5.

An der Kolbenoberfläche 6 ist mittig eine Entlüftungsbohrung 7 vorgesehen, die sich zur Kolbenunterseite hin erweitert. Am Kolben 1 ist angeformt eine die Entlüftungsbohrung 7 umgebende zylindrische Tasche 8, die zur Kolbenunterseite hin offen ist. In diese Tasche 8 ist ein zylindrisches Mikroporenfilter 9 eingesetzt. Es handelt sich hierbei um ein poröses Filter, wie es in der Medizintechnik zur Filtration von Flüssigkeiten bekannt ist. Bevorzugt besteht dieses Mikroporenfilter 9 aus einem Sintermaterial aus Kunststoff, beispielsweise aus PE oder PTFE mit einer Porengröße von 10 &mgr;&eegr;&igr; bis 80 &mgr;&eegr;&igr;. Das Sintermaterial weist offene Poren auf.A vent hole 7 is provided in the middle of the piston surface 6, which widens towards the bottom of the piston. A cylindrical pocket 8 is formed on the piston 1, which surrounds the vent hole 7 and is open towards the bottom of the piston. A cylindrical micropore filter 9 is inserted into this pocket 8. This is a porous filter, as is known in medical technology for filtering liquids. This micropore filter 9 preferably consists of a sintered plastic material, for example PE or PTFE with a pore size of 10 μηι to 80 μηι. The sintered material has open pores.

Beim Einschieben des Kolbens 1 in die Kartusche 2 kann die Restluft entweichen über die Entlüftungsbohrung 7 und das Mikroporenfilter 9. Infolge der geringen Porengröße kann jedoch das in die Kartusche 2 eingefüllte Medium nicht austreten.When the piston 1 is pushed into the cartridge 2, the residual air can escape via the vent hole 7 and the micropore filter 9. However, due to the small pore size, the medium filled into the cartridge 2 cannot escape.

Auf diese Weise ist eine sichere Entlüftungsmöglichkeit gegeben, ohne die Gefahr von Funktionsstörungen und dem Risiko von Bauteilebeschädigungen. Dem Abfüller der Kartuschen wird jegliches zusätzliche Handling erspart.This provides a safe venting option without the risk of malfunctions or damage to components. The person filling the cartridges is spared any additional handling.

Die Tasche 8 kann auch gebildet werden durch die zylindrische Wand 10 des Kolbens 1.The pocket 8 can also be formed by the cylindrical wall 10 of the piston 1.

Die Figur 4 zeigt einen Schnitt durch einen Ringkolben einer Zweikomponenten-Koaxialkartusche. Dieser Kolben ist mit einer oben offenen zylindrischen Tasche 8 versehen, die an ihrer zur Kolbenseite hin abgewandten Seite einen Boden 11 aufweist, an welchen die Entlüftungsöffnung 7 angeformt ist. In dieser Tasche 8 ist das Mikroporenfilter 9 eingesetzt.Figure 4 shows a section through an annular piston of a two-component coaxial cartridge. This piston is provided with a cylindrical pocket 8 that is open at the top and has a base 11 on the side facing away from the piston side, on which the vent opening 7 is formed. The micropore filter 9 is inserted in this pocket 8.

Besteht der Kolben 1 aus einem weichen, gegen das Füllmaterial nicht resistenten und nicht diffusionsdichten Kunststoff, dann kann auf der Kolbenoberseite eine dünne Abdeckscheibe befestigt werden, die aus einem gegenüber dem Füllmaterial diffusionsdichten und gegen das Füllmaterial resistenten Material besteht. Diese Abdeckscheibe ist mit einer Vielzahl kleiner Entlüftungsbohrungen versehen. Im Fall der Ausfuhrungsform nach Figur 4 ist diese Abdeckscheibe ringförmig. Sie schützt nicht nur den Kolben gegen das Füllmaterial, sondern verhindert auch, daß das Filter 9 in direkte Berührung mit dem Füllmaterial kommt.If the piston 1 is made of a soft plastic that is not resistant to the filling material and is not diffusion-tight, then a thin cover plate can be attached to the top of the piston, which is made of a material that is diffusion-tight and resistant to the filling material. This cover plate is provided with a large number of small vent holes. In the case of the embodiment according to Figure 4, this cover plate is ring-shaped. It not only protects the piston against the filling material, but also prevents the filter 9 from coming into direct contact with the filling material.

Claims (9)

··· ft · 4 Schutzansprüche··· ft · 4 Protection claims 1. Entlüftungsvorrichtung zum Entfernen der Restluft beim Einsetzen eines Kolbens in eine gefüllte Kartusche mit mindestens einer von der Kolbenoberfläche ins Freie verlaufenden Entlüftungsbohrung, dadurch gekennzeichnet, daß an der Kolbenoberfläche (6) im Bereich der Entlüftungsöffnung (7) eine Tasche (8) angeformt ist, in welcher ein Mikroporenfilter (9) angeordnet ist.1. Venting device for removing residual air when inserting a piston into a filled cartridge with at least one vent hole extending from the piston surface to the outside, characterized in that a pocket (8) is formed on the piston surface (6) in the region of the vent opening (7), in which a micropore filter (9) is arranged. 2. Entlüftungsvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Tasche (8) an der Kolbenunterseite angeformt ist.2. Venting device according to claim 1 or 2, characterized in that the pocket (8) is formed on the underside of the piston. 3. Entlüftungsvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Tasche (8) zylindrisch ausgebildet und zur Kolbenunterseite hin offen ist.3. Venting device according to claim 1 or 2, characterized in that the pocket (8) is cylindrical and is open towards the underside of the piston. 4. Entlüftungsvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Tasche (8) zylindrisch ausgebildet ist, zur Kolbenoberseite hin offen ist und an der der Kolbenoberseite hin abgewandten Seite einen Boden (11) mit der Entlüftungsöffnung4. Ventilation device according to claim 1 or 2, characterized in that the pocket (8) is cylindrical, is open towards the top of the piston and has a bottom (11) with the ventilation opening on the side facing away from the top of the piston (7) aufweist.(7). 5. Entlüftungsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Tasche 5. Ventilation device according to claim 1, characterized in that the pocket (8) von der Kolbenwand (10) gebildet wird.(8) is formed by the piston wall (10). 6. Entlüftungsvorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das Mikroporenfilter (8) aus einem Kunststoffsintermaterial besteht.6. Ventilation device according to one of claims 1 to 5, characterized in that the micropore filter (8) consists of a sintered plastic material. 7. Entlüftungsvorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß das Kunststoffsintermaterial aus PE bzw. PTFE besteht.7. Ventilation device according to claim 6, characterized in that the plastic sintered material consists of PE or PTFE. 8. Entlüftungsvorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß das ofFenponge Mikroporenfilter (9) eine Porengröße zwischen 10 und 80 &mgr;&eegr;&igr; aufweist.8. Ventilation device according to one of claims 1 to 7, characterized in that the open-ponge micropore filter (9) has a pore size between 10 and 80 μm. 9. Entlüftungsvorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Kolbenoberseite von einer dünnen, eine Vielzahl von kleinen Entlüftungsbohrungen aufweisenden Abdeckscheibe abgedeckt ist.9. Ventilation device according to one of claims 1 to 8, characterized in that the piston top is covered by a thin cover plate having a plurality of small vent holes.
DE29800594U 1998-01-15 1998-01-15 Venting device Expired - Lifetime DE29800594U1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE29800594U DE29800594U1 (en) 1998-01-15 1998-01-15 Venting device
DE59805244T DE59805244D1 (en) 1998-01-15 1998-12-28 Piston for insertion in a filled cartridge
EP98966418A EP0966331B1 (en) 1998-01-15 1998-12-28 Piston for inserting into a filled cartouche
PCT/EP1998/008502 WO1999036188A1 (en) 1998-01-15 1998-12-28 Deaerating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE29800594U DE29800594U1 (en) 1998-01-15 1998-01-15 Venting device

Publications (1)

Publication Number Publication Date
DE29800594U1 true DE29800594U1 (en) 1998-03-26

Family

ID=8051282

Family Applications (2)

Application Number Title Priority Date Filing Date
DE29800594U Expired - Lifetime DE29800594U1 (en) 1998-01-15 1998-01-15 Venting device
DE59805244T Expired - Lifetime DE59805244D1 (en) 1998-01-15 1998-12-28 Piston for insertion in a filled cartridge

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE59805244T Expired - Lifetime DE59805244D1 (en) 1998-01-15 1998-12-28 Piston for insertion in a filled cartridge

Country Status (3)

Country Link
EP (1) EP0966331B1 (en)
DE (2) DE29800594U1 (en)
WO (1) WO1999036188A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001094028A1 (en) 2000-06-09 2001-12-13 Sulzer Chemtech Ag Ventilation device for a piston for a cartridge
DE20103911U1 (en) * 2001-03-06 2002-07-11 Alusuisse Bayrisches Druckguß-Werk GmbH & Co. KG, 85570 Markt Schwaben Sealant bottle
EP1308218A2 (en) 2001-10-31 2003-05-07 Sulzer Chemtech AG Piston cartridge with venting means
WO2011076663A1 (en) 2009-12-22 2011-06-30 Sulzer Mixpac Ag Piston setting device, a system comprising such a device and method for setting a piston in a cartridge

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29913396U1 (en) * 1999-07-31 2000-01-20 Prestele, Eugen, 86179 Augsburg Piston for a cartridge
DE10235599A1 (en) * 2002-08-02 2004-02-19 Ritter Gmbh Vented plunger for dispenser cartridges of plastics masses is one-piece injection moulded plastics part with front and rear parts connected by connector through film hinges with vent to fold and concertina to produce closed plunger
EP1945559B1 (en) 2005-10-14 2018-05-30 3M Innovative Properties Company Plunger and plunger assembly for a cartridge, system for storing a substance, and method of filling and sealing a substance in a delivery system
USD658763S1 (en) 2010-02-02 2012-05-01 3M Innovative Properties Company Dental capsule
EP3299082A1 (en) 2016-09-21 2018-03-28 3M Innovative Properties Company Mixer assembly and device for dispensing a dental material

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4405249A (en) * 1980-03-28 1983-09-20 National Research Development Corporation Dispensing apparatus and method
DK235589D0 (en) * 1989-05-12 1989-05-12 Wolff & Kaaber METHOD AND APPARATUS FOR MIXING A SOLID AND LIQUID COMPONENT
DE9011685U1 (en) * 1990-08-10 1991-12-12 THERA Patent GmbH & Co. KG Gesellschaft für industrielle Schutzrechte, 82229 Seefeld Granule syringe
JP2905325B2 (en) * 1991-11-21 1999-06-14 東レ・ダウコーニング・シリコーン株式会社 Sealant cartridge

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001094028A1 (en) 2000-06-09 2001-12-13 Sulzer Chemtech Ag Ventilation device for a piston for a cartridge
DE20103911U1 (en) * 2001-03-06 2002-07-11 Alusuisse Bayrisches Druckguß-Werk GmbH & Co. KG, 85570 Markt Schwaben Sealant bottle
EP1308218A2 (en) 2001-10-31 2003-05-07 Sulzer Chemtech AG Piston cartridge with venting means
WO2011076663A1 (en) 2009-12-22 2011-06-30 Sulzer Mixpac Ag Piston setting device, a system comprising such a device and method for setting a piston in a cartridge
US8511350B2 (en) 2009-12-22 2013-08-20 Sulzer Mixpac Ag Piston setting device and method

Also Published As

Publication number Publication date
WO1999036188A1 (en) 1999-07-22
EP0966331B1 (en) 2002-08-21
DE59805244D1 (en) 2002-09-26
EP0966331A1 (en) 1999-12-29

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Legal Events

Date Code Title Description
R207 Utility model specification

Effective date: 19980507

R150 Utility model maintained after payment of first maintenance fee after three years

Effective date: 20010410

R081 Change of applicant/patentee

Owner name: SULZER CHEMTECH AG, CH

Free format text: FORMER OWNER: PRESTELE, EUGEN, 86161 AUGSBURG, DE

Effective date: 20010712

R157 Lapse of ip right after 6 years

Effective date: 20040803