US PATENT SUBCLASS 305 / 144
.~ Condition responsive (e.g., inclination, speed, operator command)

Current as of: June, 1999
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305 /   HD   WHEEL SUBSTITUTES FOR LAND VEHICLES

143  DF  WITH MEANS FOR TENSIONING TRACK BY MOVING AT LEAST ONE ENDWHEEL {7}
144.~ Condition responsive (e.g., inclination, speed, operator command)

DEFINITION

Classification: 305/144

Condition responsive (e.g., inclination, speed, operator command):

(under subclass 143) Apparatus wherein the automatic adjustment of the track tension includes a system utilizing a valve in association with a track adjustment system for adjusting the track tension by providing a control for actuating the tensioner element in response to the degree of slope or rate of change of distance with time of the vehicle, or a manual signal from the operator.