Title:
パワーステアリング装置
Document Type and Number:
Japanese Patent JP4015960
Kind Code:
B2
Abstract:
A power steering system includes first and second drain passages connected to the first and second passages, respectively, and first and second passage switching valves arranged at connections of the first and second drain passages and the first and second passages, respectively. When a hydraulic pump operates to discharge the hydraulic pressure to the first passage, the first passage switching valve provides fluid communication between pump-side and cylinder-side portions of the first passage and closes off the first drain passage. And when the hydraulic pump stops, the first switching valve provides fluid communication between the cylinder-side portion of the first passage and the first drain passage.
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| JP3175461 | AUTOMATIC BRAKE DEVICE FOR VEHICLE |
| JPH03138470 | OIL PUMP FOR VEHICLE |
Inventors:
Mizuki Otaki
Kurata Masakazu
Kurata Masakazu
Application Number:
JP2003014153A
Publication Date:
November 28, 2007
Filing Date:
January 23, 2003
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
B62D5/07; B62D5/06; B62D5/065; F15B7/00
Domestic Patent References:
| JP5032172A | ||||
| JP60151178A | ||||
| JP2002067995A | ||||
| JP2000065004A |
Attorney, Agent or Firm:
Tsuyoshi Hashimoto
Hiromichi Kobayashi
Tomioka Kiyoshi
Hiromichi Kobayashi
Tomioka Kiyoshi