US PATENT SUBCLASS 172 / 429
.~.~ Manually operated lever rigid with crank axle

Current as of: June, 1999
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172 /   HD   EARTH WORKING

395  DF  WITH GROUND SUPPORT VERTICALLY ADJUSTABLE RELATIVE TO FRAME {10}
423  DF  .~ With actuator {3}
429.~.~ Manually operated lever rigid with crank axle

DEFINITION

Classification: 172/429

(under subclass 423) Apparatus in which the actuating means comprises a hand or foot operated lever rigid with the pivot shaft of a wheel carrying crank.