US PATENT SUBCLASS 246 / 67
.~.~.~.~.~ Single continuous contact

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}
64  DF  .~.~.~.~ Train-carried current supply {3}
67.~.~.~.~.~ Single continuous contact {1}
68  DF  .~.~.~.~.~.~> Sectional

DEFINITION

Classification: 246/67

(under subclass 64) Systems in which a single continuous contact is maintained by shoes, brushes, or other equivalents between the moving vehicle and a metallic conductor extending parallel with the track.

SEE OR SEARCH THIS CLASS, SUBCLASS:

9+, 65, 66, 68, 73, and 86, for continuous- contact systems.

167+, and all subclasses mentioned in the search notes appended thereto, for cab and control features.

SEE OR SEARCH CLASS

191, Electricity: Transmission to Vehicles, appropriate subclasses, for details of the electric conductors and collectors.