Speed change pulley with diaphragm spring and oil spring

Details Speed change pulley with diaphragm spring and oil spring Speed change pulley with diaphragm spring and oil spring

1985-04-03

1986-10-14

Leppink, James A.

Endless belt power transmission systems or components

Pulley with belt-receiving groove formed by drive faces on...

Speed responsive

474 13, F16H 1106

Patent

active

046170057

ABSTRACT:
A speed change device comprises a hub, two annular pulley sides disposed around the hub and facing each other, one of the pulley sides being mounted for axial movement on the hub against the bias of a diaphragm spring and an additional coil spring. The diaphragm spring has a peripheral portion rockably axially bearing against the one pulley side and a central portion having a plurality of radial fingers separated by slots, rockably axially bearing against an abutment member fixed axially relative to the hub. The additional coil spring is disposed around the hub, and bears against a shoulder fixed axially relative to the movable pulley side and against the abutment member through a central portion of the diaphragm spring. An elastic spacer is axially interposed between the coil spring and the diaphragm spring. Another spacer of elastic material is axially interposed between the diaphragm spring and the abutment member. The elastic spacers are united with each other through the central opening and the slots between the radial fingers.

REFERENCES:
patent: 4132120 (1979-01-01), Fenart
patent: 4178808 (1979-12-01), Bacher
patent: 4432743 (1984-02-01), Pitoiset

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