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:
Dec. 12, 1989
Filed:
Sep. 16, 1987
Applicant:
Inventors:
James R Davis, Marshalltown, IA (US);
Robert T Wilson, Marshalltown, IA (US);
Assignee:
Fisher Controls International, Inc., Clayton, MO (US);
Primary Examiner:
Int. Cl.
CPC ...
F16K / ; F16J / ; F16J / ;
U.S. Cl.
CPC ...
251214 ; 277 59 ; 277 / ; 277105 ; 277124 ; 2771 / ; 277205 ;
Abstract
A fluid valve for use in elevated pressure and temperature conditions. Composition material wiper rings are provided in the packing bore between the packing follower and the packing box ring. The composition wiper rings have an inner diameter substantially the same as the valve stem diameter to inhibit the extrusion of packing material during sliding valve operation.
Quick Actions:
Davis, James. (1989). Valve stem packing containment for high pressure, high temperature (U.S. Patent No. 4886241). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4886241
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile