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:
May. 07, 2002
Filed:
Aug. 27, 1996
David Lamar Bowers, Cookeville, TN (US);
Robert Joseph Brown, Cookeville, TN (US);
Royce Chaffin, Baxter, TN (US);
Donnie Ray Hammock, Cookeville, TN (US);
Gerald Patrick McDermott, Cookeville, TN (US);
Flowserve Management Company, Irving, TX (US);
Abstract
An improved plug valve assembly having polymerically encapsulated seats and a machined inner surface is provided. The valve assembly comprises a valve body having an internal chamber, a plug disposed within the internal chamber and seat members supporting and sealing the plug. The seat members comprise a support frame which is completely encapsulated in a polymeric material. The process for encapsulating the seats includes providing a mold having, among other features, pins which position the support frame to provide for even application of the polymeric material to the support frame.