Title:
パワーステアリング装置
Document Type and Number:
Japanese Patent JP4315881
Kind Code:
B2
Abstract:
A power steering system includes first and second communication passages for providing communication between a first oil passage and a second oil passage, a third communication passage for providing communication between the first and second communication passages, a directional control valve disposed in the third communication passage, a first check valve disposed in the first communication passage for allowing flow from the first oil passage to a first connection portion only, a second check valve disposed in the first communication passage for allowing flow from second oil passage to the first connection portion only, a third check valve disposed in the second communication passage for allowing flow from a second connection portion to the first oil passage only, and a fourth check valve disposed in the second communication passage for allowing flow from the second connection portion to the second oil passage only.
Inventors:
Jun Soeda
Application Number:
JP2004264575A
Publication Date:
August 19, 2009
Filing Date:
September 10, 2004
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
B62D5/07; F15B11/02
Domestic Patent References:
| JP2001001918A | ||||
| JP2003237602A | ||||
| JP2005247226A | ||||
| JP2005247228A |
Attorney, Agent or Firm:
Masamichi Ayata