US PATENT SUBCLASS 172 / 466
.~ Tool held raised for relieving load on servo-motor

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

452  DF  WITH ACTUATOR ADAPTED TO LIFT TOOL FOR TRANSPORT ON WHEELED FRAME OR BROADLY CLAIMED IMPLEMENT {37}
466.~ Tool held raised for relieving load on servo-motor

DEFINITION

Classification: 172/466

(under subclass 452) Apparatus in which the actuator is powered by a servomotor and there is a means for holding the earth working element out of engagement with the earth so as to support the element independently of the servomotor.