US PATENT SUBCLASS 340 / 687
.~.~.~ Connected or disconnected


Current as of: June, 1999
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340 /   HD   COMMUNICATIONS: ELECTRICAL

500  DF  CONDITION RESPONSIVE INDICATING SYSTEM {6}
540  DF  .~ Specific condition {18}
686.1  DF  .~.~ Position responsive {9}
687.~.~.~ Connected or disconnected


DEFINITION

Classification: 340/687

Connected or disconnected:

(under subclass 686.1) Subject matter responsive to the mechanical connection of two or more objects.

(1) Note. The system may, for example, be responsive to the mechanical connection of electrical connectors.

SEE OR SEARCH THIS CLASS, SUBCLASS:

431, for trailer signal light systems and hitch alignment devices.

SEE OR SEARCH CLASS

200, Electricity: Circuit Makers and Breakers,

51+, for connector actuated switches.

307, Electrical Transmission and Interconnection Systems, 9.1, for vehicle-to-trailer electrical interconnection systems which may include an alarm or indicator of connection or disconnection.