US PATENT SUBCLASS 180 / 273
.~.~ Utilizing weight, or lack thereof, of operator on seat or other support to determine presence or absence


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

271  DF  WITH MEANS FOR PROMOTING SAFETY OF VEHICLE, ITS OCCUPANT OR LOAD, OR AN EXTERNAL OBJECT {7}
272  DF  .~ Responsive to absence or inattention of operator, or negatively reactive to attempt to operate vehicle by person not qualified mentally or physically to do so {1}
273.~.~ Utilizing weight, or lack thereof, of operator on seat or other support to determine presence or absence


DEFINITION

Classification: 180/273

Utilizing weight, or lack thereof, of operator on seat or other support to determine presence or absence:

(under subclass 272) Vehicle wherein the determination of the operator's presence or absence is made by investigating whether or not his weight is detected at his seat or such other structure as may be provided for his support.

SEE OR SEARCH CLASS

188, Brakes,

109, for a brake which may be operated by the imposition of weight on a vehicle seat.

340, Communications: Electrical,

666+, for a condition responsive indicating system of that class, which system is responsive to weight.