EP0966331A1 - Dispositif d'evacuation d'air - Google Patents

Dispositif d'evacuation d'air

Info

Publication number
EP0966331A1
EP0966331A1 EP98966418A EP98966418A EP0966331A1 EP 0966331 A1 EP0966331 A1 EP 0966331A1 EP 98966418 A EP98966418 A EP 98966418A EP 98966418 A EP98966418 A EP 98966418A EP 0966331 A1 EP0966331 A1 EP 0966331A1
Authority
EP
European Patent Office
Prior art keywords
piston
venting device
pocket
deaerating
open
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.)
Granted
Application number
EP98966418A
Other languages
German (de)
English (en)
Other versions
EP0966331B1 (fr
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
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
Publication of EP0966331A1 publication Critical patent/EP0966331A1/fr
Application granted granted Critical
Publication of EP0966331B1 publication Critical patent/EP0966331B1/fr
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

Definitions

  • the invention relates to a ventilation device for removing the residual air when inserting a piston into a filled cartridge with a ventilation opening running from the piston surface into the open.
  • 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 simultaneously insert a wire between the piston and the wall of the cartridge when inserting the piston, so that the residual air is pressed out in the area of the wire when the piston is inserted. This residual air removal is very time consuming and also involves the risk that the sealing lips on the piston can be damaged.
  • vent valves on the piston which are opened when the piston is inserted into the cartridge by means of a specially shaped piston push-in ram.
  • This requires specially adapted press-in tappets and requires relatively narrow manufacturing tolerances for the ventilation valves.
  • These vent valves have also proven to be prone to failure.
  • the object is to design the ventilation device in such a way that ventilation when inserting the piston is possible without additional manipulations. This object is achieved with the features of claim 1. Advantageous refinements can be found in the subclaims.
  • FIG. 1 shows a section through the open cartridge end and through a piston.
  • Fig. 2 is a plan view of this piston
  • Fig. 4 shows a section through an annular piston for a two-component cartridge.
  • 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, the elasticity of the sealing lip 3 facing the cartridge 2 being achieved by a circumferential incision 5.
  • a vent opening 7 is provided in the center of the piston surface 6 and widens towards the underside of the piston.
  • a cylindrical micropore filter 9 is inserted into this pocket 8. It is a porous filter as it is known in medical technology for the filtration of liquids.
  • This micropore filter 9 preferably consists of a sintered material made of plastic, for example of PE or PTFE with a pore size of 10 ⁇ m to 80 ⁇ m. The sintered material has open pores.
  • the pocket 8 can also be formed by the cylindrical wall 10 of the piston 1.
  • FIG. 4 shows a section through an annular piston of a two-component coaxial cartridge.
  • This piston is provided with a cylindrical pocket 8 which is open at the top and which has a base 11 on its side facing away from the piston side, on which the ventilation opening 7 is formed.
  • the microporous filter 9 is inserted into this pocket 8.
  • the piston 1 consists of a soft plastic that is not resistant to the filling material and is not diffusion-tight
  • a thin cover disk can be attached to the upper side of the piston, which consists of a material that is diffusion-proof and resistant to the filling material.
  • This cover plate is provided with a large number of small ventilation openings. In the case of the embodiment according to FIG. 4, this cover plate is annular. 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.

Landscapes

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

Abstract

L'invention concerne un dispositif pour évacuer l'air résiduel lors de l'introduction d'un piston (1) dans une cartouche pleine (2), ledit dispositif comprenant au moins une ouverture d'évacuation d'air (7) s'étendant vers l'air libre à partir de la surface de piston (6). Ce type de dispositif d'évacuation d'air s'est avéré peu fiable et nécessite des poussoirs spécialement adaptés. L'invention vise à créer un dispositif d'évacuation d'air permettant l'évacuation d'air lors de l'introduction du piston, sans manipulation supplémentaire. A cet effet, une poche (8), dans laquelle est placé un filtre microporeux (9), est formée sur la surface de piston (6) au niveau de l'ouverture d'évacuation d'air (7).
EP98966418A 1998-01-15 1998-12-28 Piston pour mettre dans une cartouche remplie Expired - Lifetime EP0966331B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE29800594U 1998-01-15
DE29800594U DE29800594U1 (de) 1998-01-15 1998-01-15 Entlüftungsvorrichtung
PCT/EP1998/008502 WO1999036188A1 (fr) 1998-01-15 1998-12-28 Dispositif d'evacuation d'air

Publications (2)

Publication Number Publication Date
EP0966331A1 true EP0966331A1 (fr) 1999-12-29
EP0966331B1 EP0966331B1 (fr) 2002-08-21

Family

ID=8051282

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98966418A Expired - Lifetime EP0966331B1 (fr) 1998-01-15 1998-12-28 Piston pour mettre dans une cartouche remplie

Country Status (3)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9844796B2 (en) 2005-10-14 2017-12-19 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
US11185391B2 (en) 2016-09-21 2021-11-30 3M Innovative Properties Company Mixer assembly and device for dispensing a dental material

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29913396U1 (de) * 1999-07-31 2000-01-20 Prestele, Eugen, 86179 Augsburg Kolben für eine Kartusche
DE20010417U1 (de) 2000-06-09 2001-10-11 Sulzer Chemtech Ag, Winterthur Entlüftungsvorrichtung bei einem Kolben für eine Kartusche
DE20103911U1 (de) * 2001-03-06 2002-07-11 Alusuisse Bayrisches Druckguß-Werk GmbH & Co. KG, 85570 Markt Schwaben Dichtmittelbehälter
DE20117778U1 (de) 2001-10-31 2003-03-20 Sulzer Chemtech Ag, Winterthur Kartuschenkolben mit Entlüftung
DE10235599A1 (de) * 2002-08-02 2004-02-19 Ritter Gmbh Kolben mit Entlüftung für Kartuschen zur Aufnahme und Abgabe plastischer Massen
US8511350B2 (en) 2009-12-22 2013-08-20 Sulzer Mixpac Ag Piston setting device and method
USD658763S1 (en) 2010-02-02 2012-05-01 3M Innovative Properties Company Dental capsule

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 (da) * 1989-05-12 1989-05-12 Wolff & Kaaber Fremgangsmaade og indretning til blanding af en fast og en flydende komponent
DE9011685U1 (de) * 1990-08-10 1991-12-12 THERA Patent GmbH & Co. KG Gesellschaft für industrielle Schutzrechte, 82229 Seefeld Granulatspritze
JP2905325B2 (ja) * 1991-11-21 1999-06-14 東レ・ダウコーニング・シリコーン株式会社 シーラント用カートリッジ

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9936188A1 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9844796B2 (en) 2005-10-14 2017-12-19 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
US10279935B2 (en) 2005-10-14 2019-05-07 3M Innovative Properties Company Plunger and plunger assembly for a cartridge, system for storing a substance, and method of filing and sealing a substance in a delivery system
US11185391B2 (en) 2016-09-21 2021-11-30 3M Innovative Properties Company Mixer assembly and device for dispensing a dental material

Also Published As

Publication number Publication date
DE29800594U1 (de) 1998-03-26
DE59805244D1 (de) 2002-09-26
EP0966331B1 (fr) 2002-08-21
WO1999036188A1 (fr) 1999-07-22

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