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:
Feb. 17, 2015
Filed:
Jan. 17, 2013
James D. Saucerman, Murrieta, CA (US);
Lionel A. Young, Murrieta, CA (US);
Ronald L. Grace, Fallbrook, CA (US);
John Davis, Temecula, CA (US);
David Zegres, Northhampton, PA (US);
James D. Saucerman, Murrieta, CA (US);
Lionel A. Young, Murrieta, CA (US);
Ronald L. Grace, Fallbrook, CA (US);
John Davis, Temecula, CA (US);
David Zegres, Northhampton, PA (US);
Flowserve Management Company, Irving, TX (US);
Abstract
An abeyance seal includes a polymer actuation ring, which defines a flexible sealing lip normally spaced from the shaft. When subjected to leakage, this element collapses against the shaft and forms an initial sealing. Secondarily, a metal sealing/anti-extrusion ring provides a second seal during leakage. The polymer ring provides the initial sealing function during leakage at low differential pressure, and once the polymer ring seals to the shaft, increased sealed pressure loads the polymer ring against the metal sealing/anti-extrusion ring causing it to deform so that the metal ring comes into contact with the shaft to form a second seal.