Torsion damping device for an automotive clutch plate assembly w

Details Torsion damping device for an automotive clutch plate assembly w Torsion damping device for an automotive clutch plate assembly w

1982-02-16

1985-10-08

Bonck, Rodney H.

192 clutches and power-stop control

Clutches

Operators

192 7017, 464 68, 464 81, F16D 314

Patent

active

045454736

ABSTRACT:
A torsion damping device for an automotive clutch plate assembly comprising two rotary parts, i.e. a hub with a hub disc and a pair of guide washers fixed to a friction disc. First and second spring stages are operatively circumferentially interposed between the rotary parts, the first stage spring(s) having relative low stiffness and being operative during small relatively angular displacements of the rotary parts and the second stage spring(s) having relatively high stiffness and being operative during larger relative angular displacements of the rotary parts. A friction washer in frictional engagement between the rotary parts and producing most of the frictional torque is freely angularly mounted and has a position in the rest position of the torsion damping device independent of the springs. The angles subtended by the circumferential play J between second stage spring(s) and one of the rotary parts and the circumferential play L between a lug associated with the friction washer being such that the subtended angle corresponding to J-L is between a value greater than 0.degree. (preferably 1.degree.) and 5.degree..

REFERENCES:
patent: 4018320 (1977-04-01), Schrape et al.
patent: 4222476 (1980-09-01), LeBrise
patent: 4376477 (1983-03-01), Loizeau
patent: 4398625 (1983-08-01), Beccaris

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