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:
May. 26, 1981
Filed:
Sep. 12, 1978
Applicant:
Inventor:
Rune Schmechtig, Nol, SE;
Assignee:
Aktiebolaget Tudor, Sundbyberg, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M / ; F04B / ;
U.S. Cl.
CPC ...
429 67 ; 417383 ; 417394 ; 92 90 ;
Abstract
A pump device for intermittently pumping fluid, comprises a pump house having a primary portion and a secondary portion forming a space therebetween. The pump house includes an inlet opening for admitting fluid into the space and an outlet opening. An elastic membrane is disposed in the space between the primary and secondary parts and includes a secondary side facing the inlet and outlet openings. Pulsating pressure waves are applied against the membrane for displacing the membrane such that the secondary side thereof initially closes the inlet opening and thereafter expresses fluid from the space through the outlet opening.