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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 9074421 B1

PDFFull Text
Date of Patent:
Jul. 07, 2015

Filed:

Oct. 05, 2012

Self-locking top drive guide system

Applicant:

National Oilwell Varco Llp, Houston, TX (US);

Inventors:

Adrian Marica, Cypress, TX (US);

Mihai Ionescu, Houston, TX (US);

Assignee:

NATIONAL OILWELL VARCO, L.P., Houston, TX (US);

Attorneys:

Derek V. Forinash

Porter Hedges LLP

Primary Examiner:

Yong-Suk (Philip) Ro

Int. Cl.
CPC ...
E21B 19/00 (2006.01); E21B 3/02 (2006.01); E21B 7/02 (2006.01); E21B 17/046 (2006.01); E21B 19/15 (2006.01); E21B 19/10 (2006.01); E21B 19/22 (2006.01); E21B 19/24 (2006.01);
U.S. Cl.
CPC ...
E21B 3/02 (2013.01); E21B 19/10 (2013.01); E21B 19/22 (2013.01); E21B 19/24 (2013.01); E21B 19/00 (2013.01); E21B 7/023 (2013.01); E21B 17/046 (2013.01); E21B 19/155 (2013.01);
Abstract

A top drive guide system comprising first and second rail sections axially aligned to form a top drive guide rail. A locking member is coupled to the first rail section and is movable between a locked position and an unlocked position. A locking surface is disposed on the second rail section and is operable to engage the locking member when the locking member is in the locked position. An actuator is coupled to the locking member and is operable to move the locking member from the locked position to the unlocked position.

Find Patent Forward Citations

Marica, Adrian. (2015). Self-locking top drive guide system (U.S. Patent No. 9074421). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9074421

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

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