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. 08, 1980
Filed:
Mar. 28, 1979
William C Yocum, Mt. Lebanon Township, Allegheny County, PA (US);
David E Hughes, Whitehall Borough, PA (US);
Superior Valve Company, Washington, PA (US);
Abstract
A valve for controlling the flow of gases from high pressure cylinders is provided having a projected raised annular valve seat surrounding a gas passage, a stem in threaded relation to the valve body whereby rotation of the valve stem in the valve body moves the valve stem toward and away from the valve seat, a circumferential shroud extending from the end of the valve stem and surrounding the valve seat when the valve is closed and partially open, a resilient seal member positioned within the recess on the end of the valve stem formed by the shroud, said resilient seat member having a tapered projection which extends into the gas inlet passage when the valve is in closed position and provides a gas tight seal between the valve stem and the valve seat.