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:
Apr. 01, 1986
Filed:
Jan. 29, 1985
Applicant:
Inventors:
Gary R Schaeper, Houston, TX (US);
William M Taylor, Houston, TX (US);
Bolie C Williams, III, Houston, TX (US);
Assignee:
Cameron Iron Works, Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
251-12 ; 277 31 ;
Abstract
An annular blowout preventer having a body with a central bore therethrough and a packer recess surrounding and opening on said recess, an annular packer which is a complete ring or a split ring in said recess, means for actuating said packer to closed position, an opening through the side of said body into said packer recess of sufficient size to remove said packer therethrough, a plug sealed in said opening and a sleeve around said body to engage the exterior of said plug and retain it in sealing position in said opening.