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:
Jun. 14, 1977
Filed:
Nov. 21, 1975
Ewald Hartmann, Cologne, DT;
Hendrik De Bliek, Bereldange, LU;
Fonderie et Ateliers de Mersch S.A., Mersch, LU;
Clouth Gummiwerke AG, Cologne, DT;
Abstract
A diaphragm valve arrangement includes a pair of clamping members which have respective juxtaposed surfaces which define with one another a gap and which also bound an interior space. One of the juxtaposed surfaces has a projecting portion which extends across the gap towards the other of the juxtaposed surfaces. The arrangement also includes a diaphragm which has a center portion spanning the interior space and an outer clamped portion which is located in the gap and which is in part provided with a region of lesser thickness as compared with the thickness of the center portion of the diaphragm. The projecting portion is lodged in the recess formed in the region of lesser thickness.