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:
Feb. 03, 2015
Filed:
Jul. 19, 2012
Johnny E. Jurena, Cypress, TX (US);
David J. Mcwhorter, Pinehurst, TX (US);
Charles E. Gibbs, Stafford, TX (US);
Steven F. Shimonek, League City, TX (US);
Johnny E. Jurena, Cypress, TX (US);
David J. McWhorter, Pinehurst, TX (US);
Charles E. Gibbs, Stafford, TX (US);
Steven F. Shimonek, League City, TX (US);
Cameron International Corporation, Houston, TX (US);
Abstract
A ram-type blowout preventer including an operating piston assembly isolated from wellbore pressure effects is provided. In one embodiment, a blowout preventer includes piston coupled to a ram by a connecting rod, and the connecting rod is inserted into a recess in the ram. A pressure-isolating seal may be provided in the recess between the connecting rod and the ram to isolate the end of the connecting rod within the recess from wellbore pressure in the blowout preventer. Additional systems, devices, and methods are also disclosed.