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:
Aug. 10, 1982
Filed:
Dec. 01, 1980
Takeshi Ohe, Matsuyama, JP;
Haruo Okamoto, Matsuyama, JP;
Judosha Kiki Co., Ltd., Tokyo, JP;
Abstract
A flow-control valve exhibits a flow-drooping characteristic such that the liquid supply into an oil pressure mechanism is decreased in response to an increase of the amount of liquid discharge from a pump. The pump outlet passage forms branches into a fluid supply passage communicating with an oil pressure mechanism and a recirculating passage back to an oil tank. A control valve located in the recirculating passage is opened in response to the fluid increase from the pump to recirculate a part of the fluid into the tank. An orifice not receiving large influences of the pressure variation is disposed either at the pump outlet passage or the recirculating passage and a variable orifice valve is disposed in the fluid supply passage. The variable orifice is controlled by the pressure differential existing between the upstream and downstream portions of the orifice at either location. When the pressure differential is large, the area of the variable orifice becomes small to thereby obtain the fluid drooping characteristic.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile