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. 15, 1992
Filed:
Jul. 30, 1990
Mizuo Ohtaki, Kanagawa, JP;
Miyoko Hamao, Kanagawa, JP;
Atsugi Unisia Corporation, Kanagawa, JP;
Abstract
A hydraulic circuit supplies a controlled hydraulic flow rate to a hydraulically operated automotive component, such as, a power steering unit for satisfying the characteristic function thereof. The hydaulic circuit includes therein a flow control valve unit. In the flow control valve unit, throttle passages are provided each for throttling a hydraulic flow fed from a pump to increase its speed. Orifices are further provided in the flow control valve unit to regulate a hydraulic flow rate to be supplied toward the hydraulically operated automotive component. Each orifice functions to allow less hydraulic flow rate to pass therethrough toward the hydraulically operated automotive component corresponding to increasing speed of a hydraulic flow just upstream thereof. Each orifice is provided between the adjacent throttle passages for preventing the hydraulic flow speed at the throttle passages from directly reflecting on the hydraulic flow speed just upstream of the orifices, thus, ensuring a given minimum hydraulic flow rate for the hydraulically operated automotive component in a range where the hydraulic flow speed at the throttle passages exceeds a given high level.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile