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. 29, 1981
Filed:
Nov. 29, 1979
Applicant:
Inventors:
Thomas E Mayer, Tonawanda, NY (US);
John N Story, West Seneca, NY (US);
Assignee:
Edison International, Inc., Rolling Meadows, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
1375121 ; 13751613 ; 13751619 ; 1374544 ;
Abstract
A valve having a plurality of movable, coaxially arranged annular plates is characterized by the use of fiber reinforced plate members having a thickness of greater than 0.2 inches and, in a preferred embodiment, a thickness to width ratio in excess of 0.5. A valve in accordance with the present invention is also characterized by the ratio of the number of biasing springs associated with each plate to the mean diameter of the plate being greater than 1.2 per inch.