US PATENT SUBCLASS 246 / 75
.~.~.~.~ Bridged insulated rail joint

Current as of: June, 1999
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246 /   HD   RAILWAY SWITCHES AND SIGNALS

20  DF  BLOCK-SIGNAL SYSTEMS {4}
27  DF  .~ Automatic {5}
28 R  DF  .~.~ Electric {18}
62  DF  .~.~.~ Cab signal or train control {7}
75.~.~.~.~ Bridged insulated rail joint

DEFINITION

Classification: 246/75

(under subclass 62) Systems in which an electrical circuit upon the train, normally closed through the track rail or rails, is broken by the passage of the car over one or more insulated rail-joints, the break in the rails being electrically closed under conditions of safety.

SEE OR SEARCH THIS CLASS, SUBCLASS:

48, 57 and 179, for systems disclosing bridged-insulated rail-joints or analogous features.