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:
Jul. 22, 1997
Filed:
Jun. 12, 1995
Ronald G Butler, Mountville, PA (US);
Wayne R Houck, Columbia, PA (US);
John R Lehman, Maytown, PA (US);
Roy D Miller, Landisville, PA (US);
ITT Fluid Technology Corporation, Midland Park, NJ (US);
Abstract
A circular body, having a throughgoing orifice, an externally threaded periphery, and a pair of stepped recesses, defines a valve seat for a reciprocating piston. A retaining ring is made fast in one of the recesses, and a seal which contracts upon cooling to the ambient, after having been exposed to elevated temperatures, is set in the other recess. The seal is formed of a composite of plastic in which are dispersed carbon fibers to render the seal resistant to creep. A housing having a pair of chambers formed therein has the orificed body and piston interposed between the chambers for valvingly controlling inter-chamber communication.