US PATENT SUBCLASS 74 / 516
.~ Variable output force

Current as of: June, 1999
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74 /   HD   MACHINE ELEMENT OR MECHANISM

469  DF  CONTROL LEVER AND LINKAGE SYSTEMS {8}
516.~ Variable output force {2}
517  DF  .~.~> Flexible
518  DF  .~.~> Variable input leverage

DEFINITION

Classification: 74/516

(under subclass 469) Systems having a mechanical unit which automatically varies the out-put force during the operation.