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:
Mar. 14, 2023
Filed:
Dec. 16, 2019
Flowserve Management Company, Irving, TX (US);
Glenn Robert Owens, Jr., Kalamazoo, MI (US);
Jack Robert Vasko, Wallingford, PA (US);
Flowserve Management Company, Irving, TX (US);
Abstract
A high temperature secondary seal between a rotating seal face adaptor sleeve and a rotating shaft does not consume additional axial space beyond the axial space occupied by the secondary seal. The seal includes a single ring drive collar comprising a plurality of radial directed bolts in tapped holes. As the bolts are tightened they enter a cylindrical cavity in the drive collar and impact therein a sloped surface of a crush ring. The vertical force thereby applied to the crush ring displaces the crush ring axially into a secondary graphite sealing element, thereby crushing the secondary sealing element against the adaptor sleeve and shaft, and forming a seal there between. The crush ring sloped surface can terminate in a vertical face, so that upon sufficient displacement of the crush ring the bolts abut the vertical face and impact the shaft, fixing the drive collar to the shaft.