US PATENT SUBCLASS 180 / 195
.~.~.~ Each element moves relative to wheel, hub, or shaft

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}
186  DF  .~ With at least one surface-engaging propulsion element {6}
194  DF  .~.~ Plural discrete elements protruding from a wheel, hub, or shaft {1}
195.~.~.~ Each element moves relative to wheel, hub, or shaft

DEFINITION

Classification: 180/195

Each element moves relative to wheel, hub, or shaft:

(under subclass 194) Vehicle wherein the elements are attached to the wheel, hub, or shaft in such a manner as to be moved, at least in part, relative to the wheel, hub, or shaft during the vehicle's operation.