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. 25, 1976
Filed:
Feb. 25, 1975
Applicant:
Inventors:
George E Lewis, Arcadia, CA (US);
Fernando Murman, Rancho Palos Verdes, CA (US);
Assignee:
Hydril Company, Los Angeles, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J / ;
U.S. Cl.
CPC ...
277-1 ;
Abstract
An annulus of elastomeric material in a well blowout preventer packer unit is differentially anchored about the packer axis, in order to reduce the stress levels in the elastomeric material during its inward flow toward the axis. In addition, packer inserts incorporate differently formed webs and end plates to facilitate the sought advantages.