METHOD AND APPARATUS FOR INSTALLATION AND REMOVAL OF A VALVE COVER

Title:

METHOD AND APPARATUS FOR INSTALLATION AND REMOVAL OF A VALVE COVER

Document Type and Number:

WIPO Patent Application WO/2011/146877

Kind Code:

A3

Abstract:

Apparatus and methods for removing valve cover components includes a torque transfer tool that mates with an extending portion of the valve cover assembly and has a multi-faceted segment to receive a torque-supplying wrench. A hydraulically-actuated wrench has a head with a multi-faceted portion that engages the corresponding multi-faceted segment of the torque transfer tool. The wrench's hydraulic cylinder rotates the wrench head upon actuation. The multifaceted segments can be splined. Also disclosed is a reaction tube against which the wrench can be braced prior to actuation of the cylinder.

Inventors:

CASE LARRY DON (US)
WHALEY JASON NEAL (US)
WEAVER RANDALL FERRAIN (US)

Application Number:

PCT/US2011/037402

Publication Date:

April 19, 2012

Filing Date:

May 20, 2011

Export Citation:

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Assignee:

NAT OILWELL VARCO LP (US)
CASE LARRY DON (US)
WHALEY JASON NEAL (US)
WEAVER RANDALL FERRAIN (US)

International Classes:

F04B39/10; B25B13/48; B25B27/24; F04B39/14; F04B53/16

Foreign References:

US4086830A	1978-05-02
US4027561A	1977-06-07
US5992272A	1999-11-30
EP2063062A1	2009-05-27

Other References: