US PATENT SUBCLASS 180 / 9.5
.~.~.~ Track support mounted for vertical movement

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

7.1  DF  SPECIAL DRIVING DEVICE {6}
9  DF  .~ Portable track {2}
9.1  DF  .~.~ Endless, flexible {12}
9.5.~.~.~ Track support mounted for vertical movement {2}
9.52  DF  .~.~.~.~> Adjustable
9.54  DF  .~.~.~.~> With spring {2}

DEFINITION

Classification: 180/9.5

(under subclass 9.1) Motor vehicles in which at least one end portion of the track is trained over a supporting structure including an end wheel and said supporting structure is mounted for movement in a vertical plane relative to the vehicle frame.

SEE OR SEARCH THIS CLASS, SUBCLASS:

193, for a motor vehicle of the kind described in the reference to subclasses 190+ appearing in subclass 9.1 above and wherein the endless track is provided with a vertically movable support which is located intermediate the forward and rearward extremities of the track.

SEE OR SEARCH CLASS

305, Wheel Substitutes for Land Vehicles,

143, for a wheel substitute apparatus comprising a pair of spaced end wheels, a flexible track trained about said end wheels, and one of said end wheels being vertically movable with relation to the other end wheel.