US PATENT SUBCLASS 180 / 185
.~.~.~ Track comprises substitute for or addition to propulsion element of traction wheel type

Current as of: June, 1999
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180 /   HD   MOTOR VEHICLES

182  DF  INCLUDING ONE OR MORE SKI-LIKE OR RUNNER MEMBERS {2}
183  DF  .~ Member substitutable for wheel type support structure {1}
184  DF  .~.~ With propulsion element of endless track type {1}
185.~.~.~ Track comprises substitute for or addition to propulsion element of traction wheel type

DEFINITION

Classification: 180/185

Track comprises substitute for or addition to propulsion element of traction wheel type:

(under subclass 184) Vehicle in which the endless belt or chain-type propulsion element constitutes a substitute for, or an addition to, a propulsion element of the kind which comprises a powered wheel having a periphery which bears directly on the supporting surface.

(1) Note. The powered wheel may remain in place and by utilized as a driving wheel for the track.