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. 11, 1989
Filed:
Aug. 19, 1987
Dominique Despres, Clichy, FR;
Jacques Paquin, Villeneuve-la-Garenne, FR;
Valeo, Paris, FR;
Abstract
A torsional damper device suitable for use in an inertia flywheel also serving as the reaction plate of a clutch is provided with arrangements to reduce operating noise. The device comprises coaxial first and second parts which rotate relative to each other to a limited degree. There are two substantially parallel annular flanges on the first part and at least one plate on the second part disposed axially between these flanges. Springs are disposed substantially circumferentially between base members on one of the parts. First engagement devices on the base members cooperate with complementary engagement devices on one of the parts. Second engagement devices on the base members cooperate with complementary engagement devices on the other part. The complementary engagement devices on the one part and/or the other part comprise attached separate members made from an elastomer or synthetic material. This arrangement makes it possible to dispense with accurate cutting out of the flanges and plates of the two coaxial parts.