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. 04, 1999
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 ; 92 97 ; 92100 ;
Abstract
For a hydraulically driven diaphragm pump with a diaphragm consisting of at least two individual layers, these layers are clamped at least in their central area between a coupling part on the feed area side and the hydraulics area side and are thus mechanically linked with one another. The coupling parts are also connected with a relay valve of a leak replenishment system which is attached in the pump body in a moveable manner.