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. 18, 2015
Filed:
Dec. 18, 2008
Applicants:
William L. Carbaugh, Humble, TX (US);
Leonard G. Childers, Houston, TX (US);
Eric Mei, Houston, TX (US);
Inventors:
William L. Carbaugh, Humble, TX (US);
Leonard G. Childers, Houston, TX (US);
Eric Mei, Houston, TX (US);
Assignee:
Hydril USA Distribution LLC, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 33/06 (2006.01);
U.S. Cl.
CPC ...
E21B 33/06 (2013.01);
Abstract
An annular blowout preventer device includes a body and a static head removably connected to the body, A piston is disposed inside an opening chamber to squeeze a packer. An opening chamber head has a rib extending upward from an upper surface. The rib is received within a recess in the lower surface of the static head.