Diaphragm springs

Details Diaphragm springs Diaphragm springs

1981-10-14

1984-08-14

Reger, Duane A.

Spring devices

Bendable along flat surface

Ring or annular spider

192 89B, F16F 132

Patent

active

044652674

ABSTRACT:
A diaphragm spring for use in a motor vehicle clutch of a variable pitch drive pulley is disclosed. The diaphragm spring is of the type comprising a Belleville washer peripheral portion and a central portion divided into radial fingers separated by radial slots. Apertures alternate with the roots or radial outer ends of the radial fingers and open radially into the slots. These apertures consist of relatively larger area main apertures and relatively smaller area intermediate apertures. The radially outer edges of all the apertures lie along the same circumference of the diaphragm spring. The diaphragm spring is devoid of ribs. The diaphragm spring is rigidified along the circumference by the extra material formed around the smaller intermediate apertures, while maintaining a peripheral portion of constant radial extent throughout.

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