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:
Sep. 21, 1993
Filed:
Dec. 21, 1992
Applicant:
Inventor:
Frank J Jerina, Irwin, PA (US);
Assignee:
Westinghouse Air Brake Company, Wilmerding, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
137478 ; 251363 ;
Abstract
A safety or pressure relief valve which relieves excessive pressure in a storage reservoir in a compressed air system. The valve includes a lower valve body and an upper valve housing. A valve seat member is secured in the lower valve body. The valve seat member includes an annular dovetail groove for accommodating and retaining a fluorocarbon rubber O-ring seat. A valve disc and stem slidable within a stem guide member located in the upper valve housing. A compression spring for urging the valve disc against the fluorocarbon rubber O-ring seat to positively seal off the flow of air between an inlet and outlet port.