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:
Feb. 23, 1993
Filed:
Jun. 03, 1991
Applicant:
Inventor:
Waldemar Horn, Wimsheim, DE;
Assignee:
Lewa Herbert Ott GmbH & Co., , DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B / ;
U.S. Cl.
CPC ...
417 63 ;
Abstract
In a diaphragm 1 for an hydraulically driven diaphragm pump provided with a device 22 for the indication of a diaphragm rupture wherein the diaphragm 1 is clamped at the margin between the pump housing 2 and pump cover 3 and comprises at least two individual layers 20, 21 between which a diaphragm interspace 19 is formed which is connected with the indicator device 22, the implementation is selected so that the individual diaphragm layers 20, 21 for the purely mechanical coupling during the pressure stroke as well as during the intake stroke are connected through a multiplicity of connecting areas 27 or 30 with the formation of interspaced free areas or free spaces.