Title:
弁板およびそれを備える液圧装置
Document Type and Number:
Japanese Patent JP4542473
Kind Code:
B2
Abstract:
A valve plate and a hydraulic system with the same are provided to form two or more pressure discharge holes to prevent discharge of working fluid in the jet flow state and noise, thereby preventing damage of the valve plate. A valve plate includes a suction port(31), a discharge port(32) and two or more pressure discharge holes(33) formed at a portion starting an opening of the suction port with a distance from each other in the rotation direction(A20) of a rotation shaft. One of the pressure discharge holes at an upper part in the piston room movement direction is communicated to a discharge place and the other one at a lower part in the same direction is communicated to the suction port.
Inventors:
Isamu Yoshimura
Masataka Onishi
Masataka Onishi
Application Number:
JP2005191982A
Publication Date:
September 15, 2010
Filing Date:
June 30, 2005
Export Citation:
Assignee:
Kawasaki Precision Machinery Co., Ltd.
International Classes:
F04B53/10; F04B1/22; F04B53/16
Domestic Patent References:
| JP10252642A | ||||
| JP7103131A | ||||
| JP8232834A | ||||
| JP6432467U |
Attorney, Agent or Firm:
Keiichiro Saikyo
Takeshi Sugiyama
Takeshi Sugiyama