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:
Oct. 21, 1986
Filed:
Mar. 21, 1985
Yoshihiko Toshimitsu, Asaka, JP;
Tokuro Takaoka, Tokyo, JP;
Toshitake Kawai, Kawagoe, JP;
Takashi Ishida, Kawaguchi, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A power steering device for vehicles having a simple construction, which is capable of minimizing the frictional loss of a hydraulic pump as well as the power consumption of the hydraulic pump and engine. This power steering device comprises a hydraulic pump constructed such that a pressure member is provided in a pump casing and defines an inner side wall of a pump chamber on at least one axial side of a rotary shaft of the pump, the pressure members being movable in the axial direction of the shaft; that a hydraulic chamber, which is provided on a side of the pressure member opposite the pump chamber and which faces an end portion of the pressure member, communicates with a discharge port of the hydraulic pump; and that an electromagnetic change-over valve is interposed in an oil passage connecting between the hydraulic chamber and a suction port of the hydraulic pump and is adapted to place the latters in mutual communication through opening operation thereof upon receipt of a signal from a detector which detects the moment when supplementary should be reduced.