US PATENT SUBCLASS 74 / 522
.~.~.~ Adjustable

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

469  DF  CONTROL LEVER AND LINKAGE SYSTEMS {8}
*  DD  .~ Elements {8}
519  DF  .~.~ Levers {5}
522.~.~.~ Adjustable

DEFINITION

Classification: 74/522

(under subclass 519) Levers in which the relationship of parts may be varied as by varying the length of the lever or work arms or by varying the point of application of force or the position of the fulcrum.