GB814992A - Improvements relating to clutch-driven plates - Google Patents

Abstract

814,992. Friction clutches. FERODO Ltd. Oct. 7, 1957 [July 6, 1956; March 29, 1957], Nos. 21045/56 and 10402/57. Class 80 (2). A friction clutch plate having facings of frictional material on both sides has part of the friction facing on at least one side attached to leaf springs mounted on the plate, the arrangement being such that when the plate is gripped between a pressure plate and a counter-pressure plate the springs are deflected and there are areas of the facings and of the clutch plate in direct contact. In one form, leaf springs 5, Fig. 1, are secured by rivets 4 in radial gaps in a clutch plate 1. A ring 6 of friction material is riveted or bonded to the leaf springs 5, by which it is held clear of the clutch plate 1 when the clutch is disengaged. Another ring of friction material (not shown) is attached directly to the plate 1 on the side remote from the leaf springs 5. On engagement of the clutch, the friction ring 3 is pushed into contact with the radially outer parts of the disc 1.. In another form, a clutch plate 11, Fig. of star-shaped configuration, carries on one side a number of leaf springs 15 each of which supports on its opposite sides pads of friction material 16. Pads of friction material 17 are riveted on opposite sides of the points of the disc 11. On engagement of the clutch, the friction pads 16 on the leaf springs 15 are first engaged by the pressure plate, and the pads 17 on the same side are engaged as clutch engagement is completed.