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Patent Searching and Data


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 (1517 E. Miami, McAlester, Oklahoma, 74501, US)
WHALEY, Jason Neal (HCR 73 Box 68A, Hartshorne, Oklahoma, 74547, US)
WEAVER, Randall Ferrain (HCR 75 Box 653, McAlester, Oklahoma, 74501, US)
Application Number:
US2011/037402
Publication Date:
November 24, 2011
Filing Date:
May 20, 2011
Export Citation:
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Assignee:
NATIONAL OILWELL VARCO, L.P. (7909 Parkwood Circle Drive, Houston, Texas, 77036, US)
CASE, Larry Don (1517 E. Miami, McAlester, Oklahoma, 74501, US)
WHALEY, Jason Neal (HCR 73 Box 68A, Hartshorne, Oklahoma, 74547, US)
WEAVER, Randall Ferrain (HCR 75 Box 653, McAlester, Oklahoma, 74501, US)
International Classes:
F04B39/10; B25B13/48; B25B27/24; F04B39/14; F04B53/16
Foreign References:
US4086830A1978-05-02
US4027561A1977-06-07
US5992272A1999-11-30
EP2063062A12009-05-27
Other References:
See also references of EP 2572106A4
Attorney, Agent or Firm:
FALESKI, Thaddeus J. (Conley Rose, P.C.P.O. Box 326, Houston TX, 77253-3267, US)
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