US PATENT SUBCLASS 180 / 9.32
.~.~.~ With auxiliary obstacle surmounting means

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}
9.32.~.~.~ With auxiliary obstacle surmounting means

DEFINITION

Classification: 180/9.32

(under subclass 9.1) Apparatus provided with means in addition to the running gear of the vehicle, said means being out of ground contact during normal operation of the vehicle but being operative when the vehicle encounters an obstacle to assist the vehicle in surmounting the obstacle.

SEE OR SEARCH THIS CLASS, SUBCLASS:

9.28, for a wheel vehicle provided with a flexible track apparatus, said flexible track apparatus being vertically movable into or out of ground contact.