Title:
粘性材料の注出用ディスペンサー
Document Type and Number:
Japanese Patent JP5133529
Kind Code:
B2
Abstract:
There is provided a dispenser in which an operation load of a plunger is stable and contents of the dispenser do not leak out after pressing operation is interrupted. The invention provides a dispenser comprising a syringe body (1) having a space for filling contents equipped with a extruding nozzle at the front end thereof, a plunger (2) slid, by pressing force applied thereto, in the syringe body (1) to extrude the contents in the filling space (m) from the tip of the extruding nozzle, an O-ring (3) placed in an annular groove (2) formed in the front end section of the plunger and slidable on the inner wall surface of the syringe body (1), wherein
the annular groove (2c) is formed as a defined recess having a flat bottom wall over its entirety; a plurality of projections or grooves (4) are formed on the sidewall of the annular groove (2c) with intervals therebetween so that restoring force of the O-rings (3) causes the plunger (2) to slide to the opposite direction of the press-in direction, thus inducing back suction of contents.
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Inventors:
Kunishi Hideto
Kojiro Ohara
Kazuhito Kuwahara
Toru Toma
Satoshi Sakamoto
Kojiro Ohara
Kazuhito Kuwahara
Toru Toma
Satoshi Sakamoto
Application Number:
JP2006192775A
Publication Date:
January 30, 2013
Filing Date:
July 13, 2006
Export Citation:
Assignee:
Kuraray Noritake Dental Co., Ltd.
Yoshino Industry Co., Ltd.
Yoshino Industry Co., Ltd.
International Classes:
B05C17/01; B05C5/00; A61C5/04
Domestic Patent References:
| JP59160467A | ||||
| JP2001057987A | ||||
| JP2006158983A | ||||
| JP2006204628A | ||||
| JP4347151A | ||||
| JP2001061962A |
Foreign References:
| US4852772 | ||||
| US5314416 | ||||
| WO2008007536A1 |
Attorney, Agent or Firm:
Kosaku Sugimura
Shiro Fujitani
Kiyoshi Kuruma
Shiro Fujitani
Kiyoshi Kuruma