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:
Jul. 15, 1997
Filed:
Nov. 13, 1995
Applicant:
Inventor:
Alfred Charles Maynard, Pittsfield, MA (US);
Assignee:
Martin Marietta Corporation, Bethesda, MD (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ; F16K / ;
U.S. Cl.
CPC ...
251 94 ; 251 89 ; 251144 ;
Abstract
To resist mechanical forces tending to unseat a fluid valve applied to seal against a high fluid pressure, a fluid valve assembly is equipped with a valve block that, in response to the high fluid pressure, causes a locking member to be forcibly wedged into clamping engagement with the stem of a valve, thereby securing the valve in its closed, seated position. When the high fluid pressure is relieved, the valve stem is unclamped, and the valve can then be readily lifted to an open position.