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:
May. 24, 2011
Filed:
Apr. 06, 2010
Applicants:
Bob Mcguire, Moore, OK (US);
L. Murray Dallas, Streetman, TX (US);
Inventors:
Bob McGuire, Moore, OK (US);
L. Murray Dallas, Streetman, TX (US);
Assignee:
Stinger Wellhead Protection, Inc., Oklahoma City, OK (US);
Primary Examiner:
Int. Cl.
CPC ...
F16K 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A plug valve has a valve body, a cage fitted within the valve body and a rotatable plug housed within a cylindrical cavity in the cage, for controlling fluid flow through the valve. The cage has first and second opposed flat side surfaces, each side surface has a port for receiving a replaceable flow-path insert in a fluid-tight seal. In one embodiment, the plug also includes at least one inset seal for sealing the at least one of the ports when the plug is in a closed position to inhibit leakage through the valve at low fluid pressures.