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. 22, 1998
Filed:
Jun. 19, 1997
Applicant:
Inventor:
Waldemar Horn, Wimsheim, DE;
Assignee:
LEWA Herbert Ott GmbH & Co., Leonberg, DE;
Primary Examiner:
Int. Cl.
CPC ...
F04B / ;
U.S. Cl.
CPC ...
417387 ; 417388 ; 92100 ;
Abstract
On a hydraulic diaphragm pump with a diaphragm including at least two individual layers, a dimensionally stable reinforcing element that moves together with the diaphragm and is kept in contact with the diaphragm is provided in the central area of the diaphragm. The inlet and outlet channels of the diaphragm pump open into the delivery chamber radially within the reinforcing element at least for the most part so the channels are covered accordingly by the reinforcing element.