EP1207969B2 - Ventilation device for a piston for a cartridge - Google Patents

Ventilation device for a piston for a cartridge Download PDF

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Publication number
EP1207969B2
EP1207969B2 EP01913897A EP01913897A EP1207969B2 EP 1207969 B2 EP1207969 B2 EP 1207969B2 EP 01913897 A EP01913897 A EP 01913897A EP 01913897 A EP01913897 A EP 01913897A EP 1207969 B2 EP1207969 B2 EP 1207969B2
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EP
European Patent Office
Prior art keywords
piston
valve
ventilation device
filter section
piston part
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
EP01913897A
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German (de)
French (fr)
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EP1207969A1 (en
EP1207969B1 (en
Inventor
Nikolaus Brugner
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Sulzer Chemtech AG
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Sulzer Chemtech AG
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    • 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

Definitions

  • the innovation relates to a ventilation device in a piston for a cartridge according to the preamble of claim 1.
  • a microporous filter is inserted into a pocket formed on the piston. Through this microporous filter, the trapped between the filling material and the piston air can escape when the piston is inserted into the cartridge.
  • This microporous filter should continue to prevent leakage of the filling material.
  • Components of certain fillers have a creeping oil-like behavior during storage of the cartridges. These components migrate through the microporous filter, causing leaks.
  • venting device is shown in DE GM 295 06 800.
  • the venting is carried out over several, mounted on a pitch circle of the piston cover valve pin, which are lifted when depressing the piston in the cartridge of Ventilkonen and thereby allow the air outlet.
  • this venting device can only be produced with tight manufacturing tolerances.
  • Another disadvantage is the fact that parts of the filling compound can penetrate to the valves, thereby pollute, so that their sealing function is impaired.
  • pin-shaped second piston member which forms a vent valve with the first piston part.
  • the pin-shaped second piston part has an annular bead and an annular contact shoulder, between which the edge of the bore of the first piston part is held.
  • air outlet channels are provided, can escape through the trapped between the filling material and the piston air when an annular setting ram presses on insertion of the piston against the outside of the piston. Through these air outlet channels can not be prevented, however, that a material located in the cartridge material reaches the valve formed between the annular bead and the edge of the bore, especially during prolonged storage.
  • the piston of Figure 1 has a first piston part 1, which is provided with a sealing lip 2, which comes to rest on the cartridge wall.
  • This piston part 1 has a circular cylindrical recess 3.
  • the piston also has a second piston part 4.
  • This piston part 4 has a circular cylindrical wall part 5, which is latched to the bottom of the recess 3 with the first piston part 1.
  • the locking connection is designated 6.
  • the circular cylindrical wall part 5 is arcuate in a valve pin 7.
  • This valve pin 7 penetrates a cylindrical bore 11 on the first piston part 1 and has a valve cone 9, which comes to rest against a valve lip 10 of the first piston part 1.
  • the arcuate transition region 8 engages over the cylindrical wall 12 between the bore 11 and the recess third
  • the latching 6 is interrupted by a small air duct 13. Between the outside of the wall 12 and the inside of the circular cylindrical wall part 5, a filter section 14 is formed. This filter section 14 consists of narrow channels on the inner wall of the Wandungsteils. 5
  • the arcuate transition region 8 causes the valve pin 7 is pressed against the piston back.
  • valve pin 7 When the piston is inserted into a cartridge by a tool, the valve pin 7 is moved upwards, thereby opening the valve formed by the parts 9, 10. The trapped between the filling material and the piston air escapes through the recess 3, the channel 13 and the filter section 14 and exits through the valve 9, 10. If the piston is pressed against the filling material, then this may well pass through the channel 13, but not through the filter section 14. In this way prevents filling material reaches the valve 9, 10. In the case of filling compounds which secrete creeping oil-like constituents, it is quite possible that they will overcome the filter section 14, but their escape through the valve 9, 10 is prevented.
  • the filter valve according to FIG. 1 is integrated in an annular piston 15.
  • This annular piston is covered by a cover 16, which consists of a plastic material which is not attacked by the filling material.
  • This cover plate has at least one vent hole 17 and / or a venting channel 18, via which the trapped between the piston and the filling material air can escape to the filter valve.
  • FIG. 3 and 4 differs from that of Figure 1 primarily by the fact that instead of the arcuate transition region 8 now a disc-shaped transition region 19 is present. This preferably has concentric waves 20. This disc-shaped transition region 19 has a spring function which causes the valve cone 9 is pressed against the valve lip 10. While in the embodiment of Figure 1, the filter section 14 is formed by a helical channel 21, the filter section 14A is formed according to the figures 3 and 4 by axially extending grooves 22 which are integrally formed on the second piston part 4 are. Instead of axially extending grooves and helical grooves can be provided.
  • Figure 4 it is illustrated how a piston setting tool 23 starts against the valve pin 7 and thus the valve 9, 10 opens.
  • the filter section 14 may be formed by circumferential channels having interruptions to the passage of air between the channels. It can also be formed by longitudinal ribs according to FIG. Preferably, the filter section 14 is formed by helical threads.
  • the channels of the filter section are only a few tenths of a millimeter thick, so that Viskose Shellmassen can not pass through them.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Abstract

The invention relates to a ventilation device for a piston for a cartridge, comprising a first piston part (1) which rests sealingly against the cartridge wall and a second piston part (4, 24), which forms a valve (9, 10) together with the first piston part (1). Said valve opens when a pressure is exerted on the rear side of the piston so that the air that is trapped between the filling composition and the piston can escape. According to the invention, a filter section (14) is provided in front of the valve (9, 10), between the two piston parts (1; 4, 24), as seen from the flow path of the air through the valve (9, 10). This filter section has at least one narrow channel which forms a penetration barrier for the filling mass and ensures that the valve remains dry and free of dirt.

Description

Die Neuerung betrifft eine Entlüftungsvorrichtung bei einem Kolben für eine Kartusche nach dem Oberbegriff des Anspruches 1.The innovation relates to a ventilation device in a piston for a cartridge according to the preamble of claim 1.

Nach dem DE GM 298 00 594 ist in eine am Kolben angeformte Tasche ein Mikroporenfilter eingesetzt. Über dieses Mikroporenfilter kann die zwischen der Füllmasse und dem Kolben eingeschlossene Luft entweichen, wenn der Kolben in die Kartusche eingesetzt wird. Dieses Mikroporenfilter soll weiterhin einen Austritt der Füllmasse verhindern. Bestandteile bestimmter Füllmassen weisen bei der Lagerung der Kartuschen ein kriechölartiges Verhalten auf. Diese Bestandteile durchwandern das Mikroporenfilter, womit es zu Leckagen kommt.According to DE GM 298 00 594 a microporous filter is inserted into a pocket formed on the piston. Through this microporous filter, the trapped between the filling material and the piston air can escape when the piston is inserted into the cartridge. This microporous filter should continue to prevent leakage of the filling material. Components of certain fillers have a creeping oil-like behavior during storage of the cartridges. These components migrate through the microporous filter, causing leaks.

Eine weitere Entlüftungsvorrichtung zeigt das DE GM 295 06 800. Die Entlüftung wird hierbei über mehrere, auf einem Teilkreis der Kolbenabdeckung angebrachte Ventilzapfen vorgenommen, welche beim Eindrücken des Kolbens in die Kartusche von Ventilkonen abgehoben werden und dadurch den Luftauslaß ermöglichen. Diese Entlüftungsvorrichtung ist jedoch nur mit engen Fertigungstoleranzen herstellbar. Ein weiterer Nachteil ist darin zu sehen, daß Teile der Füllmasse bis zu den Ventilen vordringen können, die hierdurch verschmutzen, so daß ihre Dichtfunktion beeinträchtigt wird.Another venting device is shown in DE GM 295 06 800. The venting is carried out over several, mounted on a pitch circle of the piston cover valve pin, which are lifted when depressing the piston in the cartridge of Ventilkonen and thereby allow the air outlet. However, this venting device can only be produced with tight manufacturing tolerances. Another disadvantage is the fact that parts of the filling compound can penetrate to the valves, thereby pollute, so that their sealing function is impaired.

Aus der DE 91 10 529 U1 ist ein Kartuschenkolben mit einem gegen die Kartuschenwand abdichtend anliegenden ersten Kolbenteil und einem in einer Bohrung des ersten Kolbenteils angeordneten zapfenförmigen zweiten Kolbenteil bekannt, das mit den ersten Kolbenteil ein Entlüftungsventil bildet. Zu diesem Zweck weist das zapfenförmige zweite Kolbenteil eine Ringwulst sowie eine ringförmige Anlageschulter auf, zwischen denen der Rand der Bohrung des ersten Kolbenteils gehalten ist. An der zur Kolbenwand gewandten Seite der ringförmigen Anlageschulter sind Luftaustrittskanäle vorgesehen, durch die zwischen der Füllmasse und dem Kolben eingeschlossene Luft entweichen kann, wenn ein ringförmiger Setzstößel beim Einsetzen des Kolbens gegen die Außenseite des Kolbens drückt. Durch diese Luftaustrittskanäle kann aber nicht verhindert werden, dass ein in der Kartusche befindliches Material besonders bei längerer Lagerung bis zu dem zwischen der Ringwulst und dem Rand der Bohrung gebildeten Ventil gelangt.From the DE 91 10 529 U1 is a cartridge piston with a sealingly abutting against the cartridge wall first piston part and arranged in a bore of the first piston member pin-shaped second piston member is known, which forms a vent valve with the first piston part. For this purpose, the pin-shaped second piston part has an annular bead and an annular contact shoulder, between which the edge of the bore of the first piston part is held. On the side facing the piston wall of the annular abutment shoulder air outlet channels are provided, can escape through the trapped between the filling material and the piston air when an annular setting ram presses on insertion of the piston against the outside of the piston. Through these air outlet channels can not be prevented, however, that a material located in the cartridge material reaches the valve formed between the annular bead and the edge of the bore, especially during prolonged storage.

Ausgehend von dieser Entlüftungsvorrichtung stellt sich die Aufgabe, diese so auszubilden, daß das Ventil trocken und frei von Verschmutzungen bleibt. Kriechölartige Bestandteile der Füllmassen sollen vom Ventil am Austreten gehindert werden.Based on this venting device has the task to train them so that the valve remains dry and free of contamination. Creep oil-like constituents of the fillers should be prevented from escaping by the valve.

Gelöst wird diese Aufgabe mit den Merkmalen des Anspruches 1. Vorteilhafte Ausgestaltungen sind den Unteransprüchen entnehmbar.This object is achieved with the features of claim 1. Advantageous embodiments are the dependent claims.

Ausführungsbeispiele werden nachfolgend anhand der Zeichnungen näher erläutert. Es zeigen:

Figur 1:
einen Schnitt durch eine erste Ausführungsform eines Kolbens;
Figur 2:
einen Schnitt durch einen Ringkolben mit der Entlüftungsvorrichtung nach Figur 1;
Figur 3:
einen Schnitt durch eine zweite Ausführungsform eines Kolbens bei geschlossener Entlüftungsvorrichtung;
Figur 4:
einen Schnitt durch den Kolben der Figur 3 bei geöffneter Entlüftungsvorrichtung.
Exemplary embodiments are explained in more detail below with reference to the drawings. Show it:
FIG. 1:
a section through a first embodiment of a piston;
FIG. 2:
a section through an annular piston with the venting device of Figure 1;
FIG. 3:
a section through a second embodiment of a piston with the venting device closed;
FIG. 4:
a section through the piston of Figure 3 with the venting device open.

Der Kolben nach Figur 1 weist ein erstes Kolbenteil 1 auf, das mit einer Dichtlippe 2 versehen ist, welche zur Anlage an die Kartuschenwand kommt. Dieses Kolbenteil 1 weist eine kreiszylindrische Vertiefung 3 auf. Der Kolben weist weiterhin ein zweites Kolbenteil 4 auf. Dieses Kolbenteil 4 besitzt ein kreiszylindrisches Wandungsteil 5, das am Grund der Vertiefung 3 mit dem ersten Kolbenteil 1 verrastet ist. Die Rastverbindung ist mit 6 bezeichnet. Das kreiszylindrische Wandungsteil 5 geht bogenförmig in einen Ventilzapfen 7 über. Dieser Ventilzapfen 7 durchdringt eine zylindrische Bohrung 11 am ersten Kolbenteil 1 und weist einen Ventilkegel 9 auf, der zur Anlage an eine Ventillippe 10 des ersten Kolbenteils 1 kommt. Der bogenförmige Übergangsbereich 8 übergreift die zylindrische Wand 12 zwischen der Bohrung 11 und der Vertiefung 3.The piston of Figure 1 has a first piston part 1, which is provided with a sealing lip 2, which comes to rest on the cartridge wall. This piston part 1 has a circular cylindrical recess 3. The piston also has a second piston part 4. This piston part 4 has a circular cylindrical wall part 5, which is latched to the bottom of the recess 3 with the first piston part 1. The locking connection is designated 6. The circular cylindrical wall part 5 is arcuate in a valve pin 7. This valve pin 7 penetrates a cylindrical bore 11 on the first piston part 1 and has a valve cone 9, which comes to rest against a valve lip 10 of the first piston part 1. The arcuate transition region 8 engages over the cylindrical wall 12 between the bore 11 and the recess third

Die Verrastung 6 ist durch einen kleinen Luftkanal 13 unterbrochen. Zwischen der Außenseite der Wand 12 und der Innenseite des kreiszylindrischen Wandungsteils 5 wird eine Filterstrecke 14 gebildet. Diese Filterstrecke 14 besteht aus engen Kanälen an der Innenwand des Wandungsteils 5.The latching 6 is interrupted by a small air duct 13. Between the outside of the wall 12 and the inside of the circular cylindrical wall part 5, a filter section 14 is formed. This filter section 14 consists of narrow channels on the inner wall of the Wandungsteils. 5

Der bogenförmige Übergangsbereich 8 bewirkt, daß der Ventilzapfen 7 gegen die Kolbenrückseite gedrückt wird.The arcuate transition region 8 causes the valve pin 7 is pressed against the piston back.

Wird der Kolben durch ein Werkzeug in eine Kartusche eingesetzt, dann wird der Ventilzapfen 7 nach oben bewegt, wodurch das von den Teilen 9, 10 gebildete Ventil geöffnet wird. Die zwischen der Füllmasse und dem Kolben eingeschlossene Luft entweicht über die Vertiefung 3, den Kanal 13 und die Filterstrecke 14 und tritt über das Ventil 9, 10 aus. Wird der Kolben gegen die Füllmasse gedrückt, dann kann diese wohl über den Kanal 13 gelangen, nicht jedoch durch die Filterstrecke 14. Auf diese Weise wird verhindert, daß Füllmasse bis zum Ventil 9, 10 gelangt. Bei Füllmassen, die kriechölartige Bestandteile absondern, ist es wohl möglich, daß diese die Filterstrecke 14 überwinden, jedoch wird ihr Austritt durch das Ventil 9,10 verhindert.When the piston is inserted into a cartridge by a tool, the valve pin 7 is moved upwards, thereby opening the valve formed by the parts 9, 10. The trapped between the filling material and the piston air escapes through the recess 3, the channel 13 and the filter section 14 and exits through the valve 9, 10. If the piston is pressed against the filling material, then this may well pass through the channel 13, but not through the filter section 14. In this way prevents filling material reaches the valve 9, 10. In the case of filling compounds which secrete creeping oil-like constituents, it is quite possible that they will overcome the filter section 14, but their escape through the valve 9, 10 is prevented.

Gemäß Figur 2 ist das Filterventil nach Figur 1 in einen Ringkolben 15 integriert. Dieser Ringkolben wird durch eine Abdeckscheibe 16 abgedeckt, die aus einem Kunststoffmaterial besteht, das von der Füllmasse nicht angegriffen wird. Diese Abdeckscheibe weist mindestens eine Entlüftungsbohrung 17 und/oder einen Entlüftungskanal 18 auf, über welche die zwischen dem Kolben und der Füllmasse eingeschlossene Luft zum Filterventil entweichen kann.According to FIG. 2, the filter valve according to FIG. 1 is integrated in an annular piston 15. This annular piston is covered by a cover 16, which consists of a plastic material which is not attacked by the filling material. This cover plate has at least one vent hole 17 and / or a venting channel 18, via which the trapped between the piston and the filling material air can escape to the filter valve.

Die Ausführungsform nach den Figuren 3 und 4 unterscheidet sich von derjenigen nach der Figur 1 in erster Linie dadurch, daß anstelle des bogenförmigen Übergangsbereichs 8 nunmehr ein scheibenförmiger Übergangsbereich 19 vorhanden ist. Dieser weist bevorzugt konzentrische Wellen 20 auf. Dieser scheibenförmige Übergangsbereich 19 weist eine Federfunktion auf, die bewirkt, daß der Ventilkegel 9 gegen die Ventillippe 10 gedrückt wird. Während bei der Ausführungsform nach Figur 1 die Filterstrecke 14 von einem wendelförmigen Kanal 21 gebildet wird, wird die Filterstrecke 14A nach den Figuren 3 und 4 durch axial verlaufende Rillen 22 gebildet, die am zweiten Kolbenteil 4 angeformt sind. Anstelle axial verlaufender Rillen können auch wendelförmige Rillen vorgesehen sein.The embodiment of Figures 3 and 4 differs from that of Figure 1 primarily by the fact that instead of the arcuate transition region 8 now a disc-shaped transition region 19 is present. This preferably has concentric waves 20. This disc-shaped transition region 19 has a spring function which causes the valve cone 9 is pressed against the valve lip 10. While in the embodiment of Figure 1, the filter section 14 is formed by a helical channel 21, the filter section 14A is formed according to the figures 3 and 4 by axially extending grooves 22 which are integrally formed on the second piston part 4 are. Instead of axially extending grooves and helical grooves can be provided.

In Figur 4 wird verdeutlicht, wie ein Kolbensetzwerkzeug 23 gegen den Ventilzapfen 7 anläuft und damit das Ventil 9, 10 öffnet.In Figure 4 it is illustrated how a piston setting tool 23 starts against the valve pin 7 and thus the valve 9, 10 opens.

Die Filterstrecke 14 kann durch umlaufende Kanäle gebildet werden, welche Unterbrechungen zum Durchtritt der Luft zwischen den Kanälen aufweist. Sie kann auch durch Längsrippen gemäß Figur 3 gebildet werden. Bevorzugt wird die Filterstrecke 14 gebildet durch wendelförmige Gewindegänge. Die Kanäle der Filterstrecke sind nur wenige Zehntel Millimeter dick, so daß Viskosefüllmassen durch diese nicht hindurchtreten können.The filter section 14 may be formed by circumferential channels having interruptions to the passage of air between the channels. It can also be formed by longitudinal ribs according to FIG. Preferably, the filter section 14 is formed by helical threads. The channels of the filter section are only a few tenths of a millimeter thick, so that Viskosefüllmassen can not pass through them.

Claims (12)

  1. Ventilation device for a piston for a cartridge, comprising a first piston part (1) which bears sealingly against the cartridge wall, and comprising a second piston part (4, 24) which together with the first piston part (1) forms a valve (9, 10) which opens when a pressure is exerted on the rear side of the piston so that the air trapped between the filling compound and the piston can escape, wherein a filter section (14) exhibiting at least one narrow channel forming a barrier for passage of the filling compound, is formed before the valve (9, 10) between the two piston parts (1; 4, 24) viewed in the flow path of the air through the valve (9, 10), characterised in that the outside circumference of the second piston part (4) is latched in a circular cylindrical recess (3) in the first piston part (1) by means of a circular cylindrical wall part (5), the latch (6) is interrupted by an air channel (13) and the filter section (14) adjoins the latch (6).
  2. Ventilation device according to claim 1, characterised in that the valve (9, 10) and the filter section (14) are arranged concentrically with one another.
  3. Ventilation device according to claim 1 or 2, characterised in that the second piston part (4) exhibits a valve cone (9) which tapers towards the rear side of the piston and when the second piston part (4) is latched is pressed by this against a valve lip (10) on the first piston part (1).
  4. Ventilation device according to claim 3, characterised in that in the middle the circular cylindrical wall part (5) of the second piston part (4) runs into a valve pin (7) exhibiting the valve cone (9).
  5. Ventilation device according to claim 4, characterised in that the filter section (14) is formed between a wall of the recess (3) and a wall of the wall part (5).
  6. Ventilation device according to claim 4 or 5, characterised in that the circular cylindrical wall part (5) runs in a curve into the valve pin (7) and this curved transitional area (8) presses the valve pin (7) in the direction of the rear side of the piston.
  7. Ventilation device according to claim 4 or 5, characterised in that the circular cylindrical wall part (5) runs into the valve pin (7) in the shape of a disc, this disc-shaped transitional area (19) is preferably of concentric undulating shape and presses the valve pin (7) in the direction of the rear side of the piston.
  8. Ventilation device according to one of claims 1 to 7, characterised in that the filter section (14) is formed by circumferential channels exhibiting breaks.
  9. ventilation device according to one of claims 1 to 7, characterised in that the filter section (14) is formed by longitudinal ribs.
  10. Ventilation device according to one of claims 1 to 7, characterised in that the filter section (14) is formed by thread turns.
  11. Ventilation device according to one of claims 8 to 10, characterised in that the channels are a few tenths of a millimetre thick.
  12. Ventilation device according to one of claims 1 to 11, characterised in that on its upper side facing the filling compound the first piston part (1) is covered by a covering disc (16) exhibiting bores (17).
EP01913897A 2000-06-09 2001-03-21 Ventilation device for a piston for a cartridge Expired - Lifetime EP1207969B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE20010417U DE20010417U1 (en) 2000-06-09 2000-06-09 Bleeding device for a piston for a cartridge
DE20010417U 2000-06-09
PCT/EP2001/003221 WO2001094028A1 (en) 2000-06-09 2001-03-21 Ventilation device for a piston for a cartridge

Publications (3)

Publication Number Publication Date
EP1207969A1 EP1207969A1 (en) 2002-05-29
EP1207969B1 EP1207969B1 (en) 2004-12-29
EP1207969B2 true EP1207969B2 (en) 2007-07-04

Family

ID=7942724

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01913897A Expired - Lifetime EP1207969B2 (en) 2000-06-09 2001-03-21 Ventilation device for a piston for a cartridge

Country Status (4)

Country Link
US (1) US6598766B1 (en)
EP (1) EP1207969B2 (en)
DE (2) DE20010417U1 (en)
WO (1) WO2001094028A1 (en)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20117778U1 (en) * 2001-10-31 2003-03-20 Sulzer Chemtech Ag, Winterthur Cartridge piston with ventilation
EP1461268A4 (en) * 2001-12-10 2009-03-25 Tah Ind Inc Dispensing cartridge with tortuous vent path
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
DE10342091A1 (en) * 2003-09-10 2005-04-28 Heraeus Kulzer Gmbh Cartridge with ventable piston
GB0321332D0 (en) * 2003-09-11 2003-10-15 Glaxosmithkline Consumer Healt Novel device
US6899254B1 (en) * 2004-01-20 2005-05-31 Plas-Pak Industries, Inc. Venting seal for dispenser
EP1728560A1 (en) * 2005-06-03 2006-12-06 3M Innovative Properties Company System for storing and dispensing of a substance
US7621428B2 (en) 2005-07-01 2009-11-24 Nordson Corporation Dispensing cartridge with vented piston
AU2006304190B2 (en) 2005-10-14 2010-11-11 Solventum Intellectual 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
DE102006047289B4 (en) * 2006-10-06 2008-09-04 Sulzer Chemtech Ag cartridge plunger
JP5247805B2 (en) * 2007-09-19 2013-07-24 ケッテンバッハ ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディートゲゼルシャフト container
GB0721774D0 (en) 2007-11-07 2007-12-19 3M Innovative Properties Co one-piece vented piston
DE102008000841B8 (en) * 2008-03-26 2014-07-10 Adcatec Gmbh Cartridge and piston with venting device
US20100096404A1 (en) * 2008-10-17 2010-04-22 Melvin Seymour Cook Liquid distribution
TW201029897A (en) * 2008-12-12 2010-08-16 Sulzer Mixpac Ag Cartridge piston
DE102009005697B4 (en) 2009-01-22 2013-05-23 Ivoclar Vivadent Ag Application device and its use
CA2690171A1 (en) * 2009-02-11 2010-08-11 Sulzer Mixpac Ag Cartridge piston with venting device
WO2011017181A1 (en) 2009-08-04 2011-02-10 3M Innovative Properties Company Dispensing device with pressure release
GB0920768D0 (en) * 2009-11-26 2010-01-13 Rieke Corp Dispenser pumps
EP2509718B1 (en) * 2009-12-11 2016-11-30 Sulzer Mixpac AG Cartridge piston
US8511350B2 (en) * 2009-12-22 2013-08-20 Sulzer Mixpac Ag Piston setting device and method
USD657876S1 (en) 2010-02-02 2012-04-17 3M Innovative Properties Company Dental capsule
US9815592B2 (en) * 2010-06-03 2017-11-14 Priska I. Diaz Leak-free airless container having piston device
JP2012056633A (en) 2010-09-13 2012-03-22 Sulzer Mixpac Ag Cartridge piston
US9469061B2 (en) 2013-01-30 2016-10-18 Plas-Pak Industries Inc One-piece ventable piston for a dispensing apparatus, a dispensing apparatus with same, and method of making same
EP2873465A1 (en) * 2013-11-18 2015-05-20 Sulzer Mixpac AG Piston for delivering a fluid component from a cartridge.
EP2998030A1 (en) * 2014-09-17 2016-03-23 Sulzer Mixpac AG Piston for a cartridge, cartridge and method of venting a cartridge
FR3047186B1 (en) * 2016-02-01 2020-02-14 Albea Lacrost AIR BLEEDING DEVICE FOR A LIQUID PRODUCT DISPENSER WITHOUT AIR INTAKE
EP3299082A1 (en) 2016-09-21 2018-03-28 3M Innovative Properties Company Mixer assembly and device for dispensing a dental material
DE202016006508U1 (en) 2016-10-21 2017-01-09 Ritter Gmbh Cartridge piston with bleeder valve
EP3700681B1 (en) * 2017-12-20 2023-04-12 medmix Switzerland AG Piston, cartridge and method of venting a cartridge
US12070768B2 (en) 2017-12-20 2024-08-27 Medmix Switzerland Ag Piston, cartridge and method of venting a cartridge
EP3597311A1 (en) * 2018-07-16 2020-01-22 fischerwerke GmbH & Co. KG Cartridge with piston and venting device
DE102022125144A1 (en) 2022-09-29 2024-04-04 Kulzer Gmbh Cartridge piston device for insertion into a cartridge, method for venting and closing a cartridge and use of a cartridge piston device

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH598070A5 (en) * 1974-09-04 1978-04-28 Fischbach Alfred Kg Kunststoff
DE3148490C2 (en) * 1981-12-08 1986-02-13 Alfred Fischbach Kg Kunststoff-Spritzgusswerk, 5250 Engelskirchen Bottom closure for a hollow cylindrical extrusion container
US4671432A (en) * 1985-10-21 1987-06-09 The Procter & Gamble Company Pump dispenser for fluent products featuring a reciprocable plunger and diaphragm seal
DE3615659A1 (en) * 1986-05-09 1987-11-12 Hilti Ag PRESSURE PISTON WITH STORAGE CHAMBER
US5000355A (en) * 1986-07-30 1991-03-19 Beecham Inc. Pump dispenser
GB2197425B (en) * 1986-11-12 1990-02-28 Metal Box Plc Pistons for pressure-dispensing containers
FR2626248B1 (en) 1988-01-21 1990-06-22 Simon Patrick VENT PISTON CONTAINER AND ITS APPLICATION TO DISTRIBUTORS IN PARTICULAR OF COSMETIC PRODUCTS
EP0344491B1 (en) * 1988-06-03 1992-12-23 Wilhelm A. Keller Dispensing cartridge with a supply cylinder and an expulsion piston
IT1217852B (en) * 1988-06-17 1990-03-30 Guala Spa DISPENSER OF PASTOUS PRODUCTS, PARTICULARLY OF PASTA TOOTHPASTE
DE59103399D1 (en) 1990-06-21 1994-12-08 Wilhelm A Keller Discharge cartridge with storage cylinder and delivery piston.
US5176291A (en) * 1991-06-14 1993-01-05 Owens-Illinois Closure Inc. Dispensing package for a viscous product with a reusable pumping mechanism
DE9110529U1 (en) 1991-08-26 1991-10-10 Prestele, Eugen, 8900 Augsburg cartridge
US5238003A (en) 1992-02-07 1993-08-24 Baidwan Balinderjeet S Plunger tip for blood gas syringe
DE29506800U1 (en) 1995-04-21 1996-08-29 Prestele, Eugen, 86161 Augsburg Venting device
DE29800594U1 (en) 1998-01-15 1998-03-26 Prestele, Eugen, 86179 Augsburg Venting device
DE20001438U1 (en) * 2000-01-28 2001-06-13 Prestele, Eugen, 86179 Augsburg Cartridge piston

Also Published As

Publication number Publication date
EP1207969A1 (en) 2002-05-29
EP1207969B1 (en) 2004-12-29
US6598766B1 (en) 2003-07-29
DE50104959D1 (en) 2005-02-03
DE20010417U1 (en) 2001-10-11
WO2001094028A1 (en) 2001-12-13

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