US PATENT SUBCLASS 180 / 223-- .~.~.~ Including steerable and driven wheel

US PATENT SUBCLASS 180 / 223
.~.~.~ Including steerable and driven wheel

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

21	DF	SPECIAL WHEEL BASE {6}
218	DF	.~ Having only two wheels {1}
219	DF	.~.~ Arranged in tandem {10}
223		.~.~.~ Including steerable and driven wheel {1}
224	DF	.~.~.~.~> Both wheels motor driven

DEFINITION

Classification: 180/223

Including steerable and driven wheel:

(under subclass 219) Vehicle provided with at least one wheel which is not only drivingly rotated for propelling the vehicle, but is also attached to the vehicle in such a manner

that it may be moved pivotably (e.g., rotatably) about a more or less vertical axis for changing the course of travel of the vehicle.

SEE OR SEARCH THIS CLASS, SUBCLASS:

13, 24, 37+, 211+, and 400+, as explained in the references thereto appearing in subclass 222 above, and see that subclass (222) for another motor vehicle of the two-tandem-wheeled type wherein one of the wheels is driven frictionally and further wherein means is provided for steering that wheel.