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특허 상세정보

Plunger for pneumatic dispenser

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B67D-007/60    B65D-083/00    B05C-017/015    B05C-017/005   
출원번호 US-0388934 (2012-11-28)
등록번호 US-9598223 (2017-03-21)
우선권정보 JP-2012-084358 (2012-04-02)
국제출원번호 PCT/JP2012/080786 (2012-11-28)
국제공개번호 WO2013/150683 (2013-10-10)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    J-TEK Law PLLC
인용정보 피인용 횟수 : 0  인용 특허 : 21

A plunger is fittable within a cylinder of a pneumatic dispenser that discharges a viscous material. The plunger has a first portion located at the front, and a second portion located at the rear. The second portion is a hollow structure and has a circumferential wall. An inner circumferential surface of this circumferential wall has a tapered surface. The circumferential wall has a thickness dimension that decreases in the axial direction moving away from the first portion. Therefore, the circumferential wall easily displaces in the radial direction, be...


1. A plunger for use by being fitted into a circular-shaped cylinder of a pneumatic dispenser that employs pressurized air to discharge a viscous material, wherein the plunger is configured to divide an inner chamber of the cylinder into a first sub-chamber that stores the viscous material and a second sub-chamber into which the pressurized air is charged, the first and second sub-chambers being coaxially aligned with each other,the plunger has a first portion configured to face the first sub-chamber and a second portion configured to face the second sub...

이 특허에 인용된 특허 (21)

  1. Shulsinger ; Joseph. Aerosol dispenser with inner container and piston. USP1978084108219.
  2. Carlos E. Bouras ; Nick I. Mellos. Anti-float plunger for pneumatically actuated syringe. USP2002016334553.
  3. Segatz Wilhelm (Zell DEX). Apparatus for discharging a bead of pasty material from a flexible bag. USP1989064840293.
  4. Clanet Frank (4 bis Sentier des Voisinoux 92190 Meudon-Bellevue FRX) Dellerm Anne (4 bis Sentier des Voisinoux 92190 Meudon-Bellevue FRX). Collapsible and inflatable piston for two- or multi- compartmental container. USP1989104877156.
  5. Schumacker Henri J. J. (121A Ave. Van Becelaere B-1170 Brussels BEX) Schumacker Terese F. (121A Ave. Van Becelaere B-1170 Brussels BEX). Device for dispensing a liquid or a paste in a finely divided manner. USP1982104355736.
  6. Boiardi Mario (Queenstown MD). Dispenser for flowable materials. USP1996085547107.
  7. Dang Nguyen Thai (Glendale CA) Morris David Paul (Valencia CA). Dispensing cartridge. USP1997105680967.
  8. Adorjn Andrs (Budapest HUX) Dvid Csaba (Budapest HUX). Disposable plastic syringe for medical use and plastic barrel, especially for disposable syringes. USP1987114704105.
  9. Weston, Terence Edward. Filling device for a needleless injector cartridge. USP2004016681810.
  10. Corso Dominique (Rue de la Plaine 38230 Charvieu FRX). Guns intended for extruding pastry products. USP1991014986444.
  11. Ikushima Kazumasa (Tokyo JPX). Liquid dispenser plunger. USP1994115360146.
  12. Digregorio, Henry; Gadol, James A.; Groene, Jeff. Liquid dispensing syringe and method for reducing piston bounce. USP2016049309042.
  13. Yankoglu, Basil N.; Fox, Terry S.. Paint dispensing system. USP2003126655555.
  14. Gupta,Pradeep Yohanne. Piston for dispensing device, dispensing device, product containing dispensing device, method of filling, and method of dispensing. USP2007057222646.
  15. Gross ; Jerome A.. Piston for pressure dispensers of the barrier piston type. USP1978084109833.
  16. Collins Malcolm G. (Wantage GBX). Pistons for pressure-dispensing containers. USP1989084854485.
  17. Ikushima, Kazumasa. Plunger for syringe of liquid dispenser. USP2011027878377.
  18. Ikushima,Kazumasa. Plunger for syringe of liquid dispenser. USP2008127458487.
  19. Ishida Nobuo (Chiba JPX) Takane Katsumi (Fukui JPX). Sealant cartridge. USP1993095242091.
  20. Mizoguchi, Osamu; Tsujikawa, Hitoshi. Viscous-material filling apparatus. USP2016059340306.
  21. Mizoguchi, Osamu; Tsujikawa, Hitoshi. Viscous-material filling method. USP2015099126702.