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:
Mar. 02, 2004
Filed:
May. 14, 2002
Applicant:
Inventors:
Randy J. Hall, Marshalltown, IA (US);
Ronald C. Burr, Marshalltown, IA (US);
Mark D. Stiehl, Marshalltown, IA (US);
Carl D. Miller, Marshalltown, IA (US);
Assignee:
Fisher Controls International LLC, St. Louis, MO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K 1/42 ; F16K 4/300 ;
U.S. Cl.
CPC ...
F16K 1/42 ; F16K 4/300 ;
Abstract
A replaceable valve seat ring for a valve assembly has an annular ring body and an open flow passage extending through the ring body. A seating surface is provided on the ring body adjacent one end of the flow passage. A tool accepting region of the flow passage is formed concentric with and at least partially along the flow passage. The tool accepting region is adapted to receive a standard tool head therein for installing and removing the valve seat ring.