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. 08, 1992
Filed:
Jul. 29, 1991
Wilfried Goes, Meersburg, DE;
Gerhard Gebauer, Bermatingen, DE;
J. Wagner GmbH, , DE;
Abstract
In a diaphragm or membrane pump, the diaphragm thereof is composed of two diaphragm disks arranged at an axial distance from one another and enclosing an interior space whose size is variable given damage to one of the diaphragm disks. Further, a signal generator is arranged in that diaphragm disk facing toward the conveying chamber and a signal pick-up is arranged in the pump housing, this signal pick-up being connected to a means for the electronic evaluation and amplification of the signals output by the signal pick-up. This embodiment makes it possible to recognize a potential damage to the diaphragm early and to thus reliably prevent hydraulic medium from proceeding into the conveyed medium.