Title:
VALVE STEM NUT WEAR ANALYSIS APPARATUS AND METHOD
Document Type and Number:
WIPO Patent Application WO/2011/022496
Kind Code:
A3
Abstract:
A method and apparatus for measuring stem nut wear in a valve having a threaded valve stem that is positioned to engage the threads of a stem nut. In a preferred embodiment, a tool is mounted on the stem nut, wherein the tool rotates when the stem nut rotates. The tool indicates a measurement of stem nut rotation. An indicator indicates stem movement. The stem nut is rotated and the amount of percent wear is observed. Rotation continues until the stem begins to move. The tool provides a reading when the stem begins to move that indicates an amount of stem nut wear.
Inventors:
LABAT CHRIS A (US)
REAMES CARTER JR (US)
REAMES CARTER JR (US)
Application Number:
PCT/US2010/045914
Publication Date:
June 16, 2011
Filing Date:
August 18, 2010
Export Citation:
Assignee:
LOOP LLC (US)
SHAW INTELLECTUAL PROPERTY HOLDINGS INC (US)
LABAT CHRIS A (US)
REAMES CARTER JR (US)
SHAW INTELLECTUAL PROPERTY HOLDINGS INC (US)
LABAT CHRIS A (US)
REAMES CARTER JR (US)
International Classes:
G01B5/18; F16K37/00; G01B5/30
Foreign References:
| JPH095064A | 1997-01-10 | |||
| US5224512A | 1993-07-06 | |||
| JPH04296268A | 1992-10-20 | |||
| JP2004144604A | 2004-05-20 |
Attorney, Agent or Firm:
D'SOUZA, Vanessa, M. et al. (Smith Nehrbass & North, L.L.C.,3838 N. Causeway Blvd., Suite 329, Metairie Louisiana, US)
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