US PATENT SUBCLASS 305 / 4
.~ Feet attached to rim

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

1  DF  STEPPER TYPE {3}
4.~ Feet attached to rim {1}
5  DF  .~.~> Spring biased

DEFINITION

Classification: 305/4

(under subclass 1) Apparatus wherein the ground engaging feet or plates are movably connected to the rim of a wheel.

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19, for an endless flexible track trained about a single wheel.

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301, Land Vehicles: Wheels and Axles,

44.1+, for ground engaging cleats movably secured directly to the rim of a wheel rather than to plates or feet which are movably secured to the rim of a wheel.