US PATENT SUBCLASS 280 / 221
.~.~.~.~ Interconnected with propulsion means

Current as of: June, 1999
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280 /   HD   LAND VEHICLES

29  DF  WHEELED {21}
200  DF  .~ Occupant propelled type {8}
210  DF  .~.~ With propulsion means {15}
220  DF  .~.~.~ Movable occupant support {2}
221.~.~.~.~ Interconnected with propulsion means {4}
222  DF  .~.~.~.~.~> Plural occupant propelled
223  DF  .~.~.~.~.~> With added power application {2}
226.1  DF  .~.~.~.~.~> Movable seat {1}
228  DF  .~.~.~.~.~> Treadmill type

DEFINITION

Classification: 280/221

(under subclass 220) Vehicles in which the movable support is so connected with the propelling train as to propel or assist in propelling the vehicle.