US PATENT SUBCLASS 180 / 14.6
.~ Tractor drive effort varied by pull exerted by trailer

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

14.1  DF  VEHICLE TRAINS {5}
14.6.~ Tractor drive effort varied by pull exerted by trailer

DEFINITION

Classification: 180/14.6

Tractor drive effort varied by pull exerted by trailer:

(under subclass 14.1) Motor vehicle where one vehicle is a complete motor vehicle which functions as a tractor and the power applied to the wheels of the tractor is a function of the load exerted by the trailing vehicles on the means connecting the vehicles.