US PATENT SUBCLASS 180 / 234
.~ With means for steering all driven wheels

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

233  DF  HAVING FOUR WHEELS DRIVEN {7}
234.~ With means for steering all driven wheels {5}
235  DF  .~.~> Comprising articulated frame and means for pivoting one portion of frame relative to other portion about vertical axis located centrally of vehicle
236  DF  .~.~> In a path of travel other than that produced by turning the front wheels and the rear wheels substantially equally and oppositely
237  DF  .~.~> Comprising swingable, plural-wheel-carrying axles on individual, vertical axes of pivot {2}
240  DF  .~.~> Including rotatable shaft extending longitudinally from wheels at one end of vehicle to wheels at other end for transmitting steering force thereto
241  DF  .~.~> Including longitudinally extending, endless element for transmitting drive to wheels

DEFINITION

Classification: 180/234

With means for steering all driven wheels:

(under subclass 233) Vehicle provided with means for repositioning every one of the driven wheels in such a manner as to alter the direction of travel of the vehicle.

(1) Note. The means includes any such device or mechanism as may be necessary for coordinating the repositioning of the several wheels.

SEE OR SEARCH CLASS

280, Land Vehicles,

91.1, for a land vehicle of the wheeled type having running gear for which steering means operable by an occupant is provided and wherein the means controls four supporting wheels; and subclasses 99+ for a land vehicle of the wheeled type having running gear which is specially constructed to enable the vehicle to make a short turn and wherein four supporting wheels are controlled for turning the vehicle.