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:
Jan. 28, 1992
Filed:
Sep. 29, 1989
Focoueur, Herve, Franconville, FR;
Bernard Jumel, Paris, FR;
VALEO, Paris, FR;
Abstract
A torsion damper for a friction clutch and/or a double damped flywheel of an automotive vehicle is of the kind having a viscous damper of the type in which two cooperating sets of vanes or fins are associated respectively with an inner and an outer carrying element. An obturator is mounted for radial sliding movement in an open chamber formed in each of the fins forming part of the inner carrying element. The obturator comprises a head block which is mounted for movement with a plunger that extends through a collar. The plunger is under the influence of a return spring, one end of which bears on the collar, with the other end bearing on an end stop fixed to the plunger. The arrangement is such that the obturator is radially moveable between a rest position in which it is in engagement on the collar, and an obturating position in which it closes off the passage between the associated fin and the outer carrying element.