Multiplate friction clutch
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United States of America Patent
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-
May 5, 2009
Grant Date -
Oct 18, 2007
app pub date -
Apr 13, 2007
filing date -
Apr 14, 2006
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A multiplate friction clutch can transmit power by pressing a stack of friction plates, which comprises plural separator plates and plural friction plates arranged alternately side by side, with a piston movable within a clutch casing. The multiplate friction clutch includes an annular holding groove formed in a pressing wall of the piston, a cushioning wave spring received in the holding groove, and an annular protuberance formed on an outer circumferential edge of an opening of the holding groove. The cushioning wave spring can be brought into resilient contact with one of the friction plates, which one friction plate is located adjacent to the piston. The annular protuberance prevents the wave spring from falling off the holding groove.
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