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:
Jul. 29, 1980
Filed:
Oct. 25, 1978
Howard Slack, Sheffield, GB;
GKN Transmissions Ltd., Birmingham, GB;
Abstract
A dual clutch has the usual driving member, two pressure plates and two driven plates frictionally engaged between a pressure plate and the driving member. The clutch also has a conventional cover member. The spring arrangement for providing a clamp load on the driven members between the driving members and the pressure plates is made up of two separate springs. One spring is a diaphragm spring, complete with inwardly extending release fingers, which act between the cover member and the main or first pressure plate. The second spring is a belleville spring which is less strong than the first mentioned spring, and acts between the two pressure plates to provide the clamp load for the second pressure plate but reduce the clamp load for the main pressure plate.