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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.:

US 9410393 B1

PDFFull Text
Date of Patent:
Aug. 09, 2016

Filed:

Dec. 12, 2013

Pressure assisted blowout preventer

Applicant:

Hydril Usa Manufacturing Llc, Houston, TX (US);

Inventors:

Eric Dale Larson, Houston, TX (US);

Brian Scott Baker, Houston, TX (US);

Assignee:

Hydril USA Distribution LLC, Houston, TX (US);

Attorney:

Bracewell LLP

Primary Examiner:

Matthew R Buck

Assistant Examiner:

Douglas S Wood

Int. Cl.
CPC ...
E21B 33/06 (2006.01); E21B 7/12 (2006.01); F15B 15/26 (2006.01); E21B 29/12 (2006.01); F16D 31/02 (2006.01); E21B 29/00 (2006.01); E21B 34/04 (2006.01);
U.S. Cl.
CPC ...
E21B 33/061 (2013.01); E21B 33/062 (2013.01); E21B 34/04 (2013.01);
Abstract

A blowout preventer (BOP) includes a pressure driven operator that is equipped with a balancing circuit to offset pressure inside the BOP. The operator, which is used to drive a ram, includes a piston, coupled to the ram by an operator arm, and a balance arm on a side of the piston opposite the operator arm. Pressure from inside the BOP communicates to an end of the balance arm opposite the piston and exerts a force to drive the ram radially inward.

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Larson, Eric. (2016). Pressure assisted blowout preventer (U.S. Patent No. 9410393). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9410393

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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