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, 1980
Filed:
Mar. 17, 1977
Applicant:
Inventor:
Harold W Ensign, Fullerton, CA (US);
Assignee:
Cla-Val Co., Costa Mesa, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
13762528 ; 251 611 ;
Abstract
A diaphragm valve includes an apertured diaphragm plate that separates mutually concentric input and output valve chambers. A flexible diaphragm extends somewhat loosely across the plate and seals an operating chamber on one side of the plate. The chamber contains a spring pressed retainer plate having a sealing lip bearing against, but otherwise unsecured to, the diaphragm so that by controlling pressure within the operating chamber, the primary sealing closure is broken and the retainer plate apertures may be progressively blocked or unblocked as the diaphragm moves to and from the diaphragm plate apertures.