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.

Date of Patent:
May. 05, 2015

Filed:

Feb. 29, 2012
Applicant:

Nghia T. Tran, Houston, TX (US);

Inventor:

Nghia T. Tran, Houston, TX (US);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 29/12 (2006.01); E21B 33/035 (2006.01); E21B 33/037 (2006.01); E21B 33/04 (2006.01); E21B 34/10 (2006.01); E21B 34/04 (2006.01);
U.S. Cl.
CPC ...
E21B 33/037 (2013.01); E21B 33/04 (2013.01); E21B 34/101 (2013.01); E21B 33/035 (2013.01); E21B 34/04 (2013.01);
Abstract

A cap for protecting a sealing surface of a hub of a subsea device includes an equalization valve and a fluid conduit. The equalization valve includes a valve body having a pressure equalization conduit, a sleeve disposed about the valve body and having a port allowing fluid communication across the sleeve, and a valve spring configured to bias the sleeve to a closed position. The sleeve is configured to move to an open position in response to a force that depresses the sleeve and causes the valve spring to compress and the port is fluidly isolated from the pressure equalization conduit in the closed position and is in fluid communication with the pressure equalization conduit in the open position. In the open position, an interior environment of the subsea device is in fluid communication with the environment outside the cap through the equalization valve.


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Tran, Nghia. (2015). High-pressure cap equalization valve (U.S. Patent No. 9022122). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9022122

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