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:
Dec. 29, 1987
Filed:
Dec. 22, 1986
Keiichi Nakamura, Kariya, JP;
Mikio Suzuki, Hekinan, JP;
Toyoda Koki Kabushiki Kaisha, Kariya, JP;
Abstract
A power steering system which includes a fluid source that supplies pressure fluid of a constant flow rate, a fluid motor for supplementing manual steering torque, a servo-valve for distributing fluid to the fluid motor, and a reaction device for applying hydraulic reaction or feeling to a starting wheel in accordance with fluid pressure applied thereto. A magnetic control valve having a solenoid therein is connected to the reaction device to vary fluid pressure applied thereto in a predetermined range of pressures in accordance with vehicle operating condition. A mechanism for controlling the fluid pressure applied to reaction device at a predetermined pressure in the predetermined range of pressure even when the current supplied to the solenoid becomes abnormal is incorporated in the magnetic control valve.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile