The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 19, 1988
Filed:
Mar. 20, 1986
Applicant:
Inventors:
Masahiko Suzuki, Aichi, JP;
Hiroshi Iwata, Kariya, JP;
Kazuma Matsui, Toyohashi, JP;
Akira Takagi, Kariya, JP;
Yasuhiro Horiuchi, Aichi, JP;
Kougorou Nakagawa, Kariya, JP;
Toshiki Sugiyama, Kariya, JP;
Assignee:
Nippondenso Co., Ltd., Kariya, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B62D / ;
U.S. Cl.
CPC ...
180141 ; 60443 ; 60450 ; 123 4112 ; 137101 ; 137117 ; 180143 ; 280 / ;
Abstract
A hydraulic drive system for use with a vehicle power steering pump has a hydraulic motor connected in series with a power steering mechanism and a bypass line extending in bypassing relationship with the motor. A bypass valve is disposed in the bypass line to control the flow through the bypass line such that, when a steering force applied to a vehicle steering wheel is increased, the bypass flow is substantially in proportion to the steering force.