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:
Aug. 24, 1976
Filed:
Aug. 01, 1975
Applicant:
Inventors:
Joe G Chambless, Shreveport, LA (US);
John W Freeman, Houston, TX (US);
Assignee:
ACF Industries, Incorporated, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16L / ; F16L / ; E21B / ;
U.S. Cl.
CPC ...
166 84 ; 166 89 ; 166173 ; 285187 ; 285302 ;
Abstract
A packing for a wellhead assembly to seal between a casing and a bore within the wellhead as the casing moves longitudinally in the wellhead in response to thermal conditions. The packing is mounted on the exterior free upper end portion of the casing inside the wellhead bore.