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. 03, 1983
Filed:
Jul. 24, 1981
Applicant:
Inventors:
David G Croy, Houston, TX (US);
Lee M Hollingsworth, Houston, TX (US);
Leonard E Williams, Jr, Houston, TX (US);
Richard D Jolly, Houston, TX (US);
Mark C Tate, Houston, TX (US);
Assignee:
Cameron Iron Works, Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ; F16J / ;
U.S. Cl.
CPC ...
277 27 ; 277 31 ; 277103 ; 277111 ; 2771 / ; 166 88 ; 166 83 ; 285140 ; 285142 ; 285147 ; 277D / ;
Abstract
An improved heat resistant seal assembly for sealing across an annular recess between the interior of a wellhead member and the exterior of a tubular member including a heat resistant seal ring in the recess, a pressure responsive ring for moving the seal ring into sealing position in the recess, latching means to retain the pressure responsive ring in set position and spring means between the seal ring and the pressure responsive ring to maintain a sealing force on the seal ring.