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. 02, 1978
Applicant:
Inventor:
Kenneth C Litt, Silver Spring, MD (US);
Assignee:
Pace Incorporated, Silver Spring, MD (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B / ;
U.S. Cl.
CPC ...
417560 ; 13751215 ; 1375124 ; 417566 ;
Abstract
The inlet and discharge valves of a pump are each comprised of a circular valve plate centered in a circular cutout in a flat valve sheet. Diametrically opposed webs join the valve plate to the main body of the valve sheet and perforations in the webs provide both, spring action and allow for air passage.