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:
May. 09, 1989
Filed:
Nov. 30, 1987
Applicant:
Inventor:
Helmut Kohler, Buhlertal, DE;
Assignee:
LuK Lamellen und Kupplungsbau GmbH, Buhl, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16D / ;
U.S. Cl.
CPC ...
192 / ; 192 7027 ; 267161 ;
Abstract
A friction clutch wherein the diaphragm spring is installed between two annular seats which are carried by the clutch cover. At least one side of the spring has a set of radially extending reinforcing projections each of which extends in part into the annular main (outer) section and into one of the radially inwardly extending prongs. The respective seat has recesses for intermediate portions of such projections. The diaphragm spring is made of special spring steel and the recesses can be formed by deformation of and/or removal of material from the respective seat or seats.