192 clutches and power-stop control – Elements – Engaging surfaces
Patent
1988-09-20
1989-09-26
Bonck, Rodney H.
192 clutches and power-stop control
Elements
Engaging surfaces
192107C, F16D 6904
Patent
active
048693561
ABSTRACT:
A driven clutch disk assembly adapted for use in a friction clutch includes a system for controlling clutch engagement friction, whereby an increasing surface contact friction area is presented in order to limit clutching capacity over an initial clutch engagment period. The result is a substantial reduction of the chatter which tends to occur in clutch systems which utilize metallic friction elements. In a preferred form, the clutch disk assembly incorporates a pair of circumferentially extending cantilevered spring beams, both positioned intermediately of a pair of backing plates, each spring beam loaded against one of the pair. An associated friction element secured to the backing plate will thereby have a crowned surface for initial clutch engagement. The surface will collapse during engagement to ultimately present a full flattened friction surface area. The invention thereby tends to obviate the chatter problem.
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Bonck Rodney H.
Dana Corporation
McDonald F. B.
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