Title:
プランジャ型ポンプ装置
Document Type and Number:
Japanese Patent JP4617617
Kind Code:
B2
Abstract:
A plunger pump device includes a housing defining a compression chamber, a plunger slidably accommodated in the housing and exposed to the compression chamber at one end, a drive cam for reciprocating the plunger, a discharge valve connected to the compression chamber, an intake valve connected to the compression chamber, and a low-pressure reservoir for accommodating fluid with a predetermined pressure or more connected to the compression chamber through the intake valve. Even if the intake valve is in a closed position, a small amount of the fluid is discharged from the compression chamber into the low-pressure reservoir side through a slit formed on the intake valve. The small amount of the fluid discharged through the slit is accommodated in a capacity space under a small pressure.
Inventors:
Okutani Akinori
Yasuhito Sekihara
Akihiro Yokoyama
Yasuhito Sekihara
Akihiro Yokoyama
Application Number:
JP2001217536A
Publication Date:
January 26, 2011
Filing Date:
July 18, 2001
Export Citation:
Assignee:
Advics Co., Ltd.
International Classes:
F04B1/02; F04B53/10; B60T8/40; F04B1/04; F04B9/04; F04B11/00; F04B23/02; F04B49/24; F04B53/00
Domestic Patent References:
| JP8040234A | ||||
| JP6280743A | ||||
| JP2001073953A | ||||
| JP6280742A |
Attorney, Agent or Firm:
Kazuma Ikeda