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. 13, 1983
Filed:
Aug. 03, 1981
Applicant:
Inventors:
Ernst Kuhlen, Willich, DE;
Manfred Winkels, Dusseldorf, DE;
Assignee:
Pierburg GmbH & Co. KG, Neuss, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B / ;
U.S. Cl.
CPC ...
417395 ; 91347 ;
Abstract
A pneumatically operated diaphragm fuel pump comprising a ram actuated by a diaphragm and arranged in a drive chamber and a reversible lever subjected to the action of a tension spring for actuating suction and air-inlet valves. The lever is locked with respect to the ram for a given range of stroke of the ram and switching takes place only at the dead center positions of the diaphragm.