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:
Dec. 15, 1981
Filed:
Jun. 11, 1979
Nobuyasu Ishida, Tokai, JP;
Hisami Tsujio, Okazaki, JP;
Aisin Seiki Kabushiki Kaisha, Kariya, JP;
Abstract
A clutch disc assembly including a pair of annular friction facings in the form of a truncated-conical shape adapted to be frictionally gripped and flattened between a flywheel and a pressure plate in the engage state, the friction facings being made of a composite material consisting essentially of asbestos fiber and thermoset resin and being arranged to be contiguous to the side-face of the flywheel at their inner peripheries and spaced apart from the flywheel at their outer peripheries in the disengaged state, the hardness of the inner periphery of the facing opposed to the flywheel being greater than that of its remaining portion, and the hardness of the outer periphery of the facing opposed to the pressure plate being greater than that of its remaining portion.