US PATENT SUBCLASS 305 / 151
.~ Biased by spring only

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}
151.~ Biased by spring only {1}
152  DF  .~.~> Longitudinally outwardly biased by coil spring only

DEFINITION

Classification: 305/151

Biased by spring only:

(under subclass 143) Apparatus wherein the endwheel is acted upon by a device capable of deflecting so as to store energy and be used as a source of power for tensioning the track.

SEE OR SEARCH CLASS

280, Land Vehicles,

92, for a occupant steered running gear which is one-wheel controlled.