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:
Jun. 01, 1993
Filed:
Oct. 26, 1992
Paul E Terry, Valencia, CA (US);
Other;
Abstract
A fluid control device for hydraulic systems is provided having closure means movably positioned within a valve housing and adapted to selectively close a fluid passageway in response to a predetermined pressure level. The closure means includes a piston body slidably located in the valve housing for reciprocating movement therein and a spring adapted to bias the piston body away from a shoulder to maintain the fluid passageway open during normal operation. The piston body includes a conical nose and a plurality of flow channels (or apertures) which allow fluid to pass through the piston body during normal flow. When the fluid pressure is large, indicating a downstream break or leak in the flow line, the fluid pressure will overcome the force exerted by the spring and force the piston body against the shoulder, thereby blocking the flow pathway and stopping flow through the device.