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. 10, 1996
Filed:
Oct. 13, 1994
Dieter Lutz, Schweinfurt, DE;
Franz-Josef Horth, Schweinfurt, DE;
Hartmut Heide, Zeil, DE;
Hilmar Gobel, Grafenrheinfeld, DE;
Alan E Littell, Sao Bernardo do Campo, BR;
Josef Vonderau, Bad Neustadt, DE;
Armin Heid, Schweinfurt, DE;
Erich Scheer, Prosselsheim, DE;
Fichtel & Sachs AG, Schweinfurt, DE;
Abstract
A friction clutch for a transmission of a motor vehicle generally will have a clutch disc, and the clutch disc will be provided with friction linings for engaging the friction clutch with a rotating engine flywheel. The friction rings can be provided, on both surfaces thereof with trough-shaped depressions, to reduce the weight of the clutch disc. The trough-shaped depressions can essentially be rectangular or square, with rounded corners and with connecting surfaces which are steeply diagonal, or curved with a large radius of curvature.