US PATENT SUBCLASS 180 / 235
.~.~ Comprising articulated frame and means for pivoting one portion of frame relative to other portion about vertical axis located centrally of vehicle

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

233  DF  HAVING FOUR WHEELS DRIVEN {7}
234  DF  .~ With means for steering all driven wheels {5}
235.~.~ Comprising articulated frame and means for pivoting one portion of frame relative to other portion about vertical axis located centrally of vehicle

DEFINITION

Classification: 180/235

Comprising articulated frame and means for pivoting one portion of frame relative to other portion about vertical axis located centrally of vehicle:

(under subclass 234) Vehicle wherein the means for repositioning the wheels comprises a vehicle frame which is divided into fore and aft, wheel-supported portions, the portions being hingedly connected to one another along a substantially vertical axis which is located at the approximate center of the vehicle, and provided with means for moving one portion of the frame relative to the other portion about the axis.

(1) Note. The connection of one portion of the other frequently provides also for the pivotable movement of one portion relative to the other about one or more horizontal axes (e.g., to facilitate movement of the vehicle over an uneven surface).

SEE OR SEARCH THIS CLASS, SUBCLASS:

6.2+, as explained in the reference thereto appearing in subclass 233 above, and see particularly indented subclass 6.64, for a vehicle of that area which includes a frame member, having at least two traction elements thereon, swingable about a vertical axis in response to the differential driving of the elements.

14.1+, as explained in the reference thereto appearing in subclass 233 above, and with further observation that subclasses 14.1+ has not been screened for subject matter which may now be better provided for by this subclass (235).

265, for a motor vehicle of the steerable, driven wheel type having two or more steerable wheels mounted upon an axle which is swingable about a substantially vertical axis and having the motor of the vehicle mounted to swing with the axle, and wherein the axis is offset longitudinally from the axis about which it swings.

418+, for a motor vehicle of the kind comprising articulated sections and having steering gear of the fluid power assist type, and wherein steering is accomplished by moving the sections relative to one another about a more or less

vertical axis at their point of articulation.