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:
Dec. 11, 1984
Filed:
Aug. 09, 1982
James E Barker, Sauk Rapids, MN (US);
James C Hadley, Sartell, MN (US);
General Signal Corporation, Stamford, CT (US);
Abstract
Disclosed is a flexible sealing ring for a valve having a generally S-shaped cross-section and an extension from one end of that S-shape. The extension is mounted on the valve body and serves as a cantilever means for the sealing ring which is thus sealingly engagable with the peripheral sealing surface of a movable valve member pivotally positioned within the valve passageway. The sealing ring is formed from materials capable of withstanding high temperatures (1000.degree. F.) for sustained periods without impairment of its' sealing capacity. The sealing ring may be used in cooperative combination with other sealing rings, including heat destructible materials such as 'Teflon', to form valve seal means effective over a range of temperatures and pressures, including firesafe valve seal means.