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. 15, 1985
Filed:
Mar. 16, 1983
Ichiro Koike, Higashimatsuyama, JP;
Jidosha Kiki Co., Ltd., Tokyo, JP;
Abstract
A flow control valve is provided which is interposed between the discharge port of an oil pump and a hydraulic device for supplying a necessary amount of hydraulic oil to the hydraulic device, as such oil is discharged by the oil pump. The flow control valve includes a spool valve which is slidably fitted in a valve bore for reciprocatory displacement therein, thus opening or closing a return path for the oil which leads to a tank. A land on the spool valve is formed with an edge of a diameter which is slightly less than the internal diameter of the valve bore, thereby defining a variable orifice between the edge and an adjacent edge of the opening of the return path.