US PATENT SUBCLASS 180 / 118
.~.~ Responsive to instability condition

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

116  DF  SURFACE EFFECT VEHICLES (I.E., GROUND EFFECT MACHINES) {7}
117  DF  .~ Having propulsion or control means {3}
118.~.~ Responsive to instability condition

DEFINITION

Classification: 180/118

(under subclass 117) A vehicle in which a condition indicative of instability of the vehicle (e.g., a variation of cushion or curtain pressure, a variation of the height of the vehicle above the supporting surface, etc.) causes operation of the propulsion or control means without the intervention of a human operator.