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:
Jun. 09, 1998
Filed:
Aug. 19, 1996
Applicant:
Inventors:
Michael R Williams, Houston, TX (US);
Lien-Yan Chen, Spring, TX (US);
Assignee:
FMC Corporation, Chicago, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
251328 ; 251326 ;
Abstract
A gate valve is disclosed which includes a modified valve seat designed to reduce stress concentrations and wear between the gate and the valve seat. The valve seat includes a relief groove positioned on the inner diameter of the valve seat relatively close to the seating surface of the valve seat.