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:
Jan. 01, 1985
Filed:
Nov. 27, 1981
Applicant:
Inventors:
A Kenneth Wilson, Aurora, IL (US);
Ronald E Barker, Somonauk, IL (US);
Assignee:
AMSTED Industries Incorporated, Chicago, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
251368 ; 251306 ;
Abstract
A valve including a cast or nodular iron body and a cast or nodular iron valve member having sealing surfaces which seal the fluid passage in the closed position of the valve member. At least one of the sealing surfaces in the closed position is formed by a bonded powder metal layer having high wear and corrosion resistant properties.