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. 12, 2005
Filed:
Aug. 11, 2003
Applicants:
Martin Pährisch, Hallstadt, DE;
Ronald Beck, Thundorf-Rothhausen, DE;
Alfred Schraut, Waigolshausen, DE;
Erwin Ziegler, Gressthal, DE;
Frank Hirschmann, Niederwerrn, DE;
Inventors:
Martin Pährisch, Hallstadt, DE;
Ronald Beck, Thundorf-Rothhausen, DE;
Alfred Schraut, Waigolshausen, DE;
Erwin Ziegler, Gressthal, DE;
Frank Hirschmann, Niederwerrn, DE;
Assignee:
ZF Sachs AG, Schweinfurt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16D013/71 ;
U.S. Cl.
CPC ...
Abstract
A diaphragm spring for a friction clutch includes a ring-like body area and a plurality of spring tongues arranged in a row in the circumferential direction and extending radially inward from the body area. A stiffening rib formed in at least one of the spring tongues extends radially into the body area.