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:
Apr. 27, 1993
Filed:
Jun. 03, 1992
Applicant:
Inventor:
Adelbert Schalk, Wutoschingen-Horheim, DE;
Assignee:
Georg Fischer Rohrleitungssysteme AG, Schaffhausen, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ; F16K / ;
U.S. Cl.
CPC ...
251331 ; 251367 ; 251368 ;
Abstract
A diaphragm valve is described which comprises a lower housing portion and a upper housing portion which are clamped together by a fastening device. An elastomeric diaphragm is located between the lower housing portion and the upper housing portion. A compression spring is arranged between either the lower housing portion or the upper housing portion and an element of the fastening device.