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.:
Date of Patent:
Aug. 27, 1991
Filed:
Aug. 27, 1990
Applicant:
Inventor:
Walter T Roush, Houston, TX (US);
Assignee:
Keystone International, Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23P / ;
U.S. Cl.
CPC ...
29890124 ; 29890121 ; 294265 ; 292131 ;
Abstract
A method for removing and inserting a tubular frusto-conical seat (26) from the seat cavity (22) of a valve chamber (20) in a valve body (12). The tool (46) for performing the method has a laterally extending protuberance (60) on its inner end adapted to be received within a port (38) of the seat (26) for prying the seat (26) loose upon a prying action of the tool (46). An annular shoulder (56) on the tool (10) engages the outer annular surface (42) of the seat (26) for providing a pivot axis.