Gm Global Technolgoy Operations, Inc.

Wayne L Spitler

Robert A Muchmore

Randy Lewis Melanson

Gerald C Danielewicz

A damper assembly for a friction clutch has a plurality of springs trapped in a cage member. The springs provide a resilient drive connection between input and output members of the clutch damper. The input member of the clutch damper is a pressure plate on which a friction surface is disposed. The output member is a hub which is connected to the output shaft of a torque converter. Embossments are formed on the members of the damper, such as the cage, the input or output member, to provide friction hysteresis between relatively rotatable members of the damper. The normal force for the friction hysteresis is established by a washer spring which is positioned by embossments also formed on one of the damper members. The angular excursion permitted by the damper springs is limited by openings formed in one damper member and tabs formed on another damper member.

Clutch and damper assembly

A power transmitting clutch has a transient torque damper with a floating ring and spring members disposed in torque transmitting relation between an input member and an output member. The floating ring has a pair of stop surfaces that are axially and radially aligned with stop surfaces on the input member and output member respectively. Cooperation between the stop members limits the amount of spring compression and the relative angular excursion between the input member and the ring and between the ring and the output member.

Clutch damper assembly

A drum brake adjuster having a spring biased lock plate cooperating with a parking brake strut having a lost motion connection with a parking brake lever. The lost motion determines the amount of shoe retraction, and the lock plate adjusts the effective length of the strut for brake shoe wear. The lock plate and its spring are mounted on one shoe web near one end of the strut, with the other strut end being connected to the parking brake lever.

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Ludlow Falls, OH, United States of America

Wayne L Spitler