US PATENT SUBCLASS 192 / 89.22
.~.~.~ Belleville disc spring

Current as of: June, 1999
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192 /   HD   CLUTCHES AND POWER-STOP CONTROL

30 R  DF  CLUTCHES {15}
82 R  DF  .~ Operators {18}
89.2  DF  .~.~ Spring engaged {7}
89.22.~.~.~ Belleville disc spring {3}
89.23  DF  .~.~.~.~> Push-type
89.24  DF  .~.~.~.~> Pull-type
89.25  DF  .~.~.~.~> Geometric configuration

DEFINITION

Classification: 192/89.22

Belleville disc spring:

(under subclass 89.2) Structure, wherein the resilient means is a relatively thin, resilient annular disc that is dished or tapered in shape.