Damper disc with concentric springs including hourglass-shaped s

Details Damper disc with concentric springs including hourglass-shaped s Damper disc with concentric springs including hourglass-shaped s

1982-09-27

1985-02-19

Bonck, Rodney H.

192 clutches and power-stop control

Clutches

Operators

192 7017, 464 64, 464 68, F16D 314, F16D 1368

Patent

active

044999810

ABSTRACT:
A damper disc used as a clutch disc of a friction clutch includes a spline hub splined to an output shaft and having a radial flange, a pair of annular side plates arranged at both sides of the flange and having a radially outer portion to which torque is transmitted, and torsion springs arranged at openings in the flange and the side plates. At least some of the torsion springs consist of coaxially arranged double compressible coil springs including a diametrically large outer spring and a diametrically small inner spring. Each of these small springs is hourglass-shaped so that their diameters gradually change along their length and their axially middle portions have the smallest diameters. The diametrically large outer springs may also have an hourglass shape.

REFERENCES:
patent: 1089168 (1914-03-01), Webster
patent: 2076373 (1937-04-01), Katcher
patent: 3556273 (1971-01-01), Maucher
patent: 4077619 (1978-03-01), Borlinghaus
patent: 4239097 (1980-12-01), Graecen et al.

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