US PATENT SUBCLASS 246 / 383
.~ Overlapped main

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

382  DF  SWITCH-CONNECTED FROGS {6}
383.~ Overlapped main {1}
384  DF  .~.~> Double rail

DEFINITION

Classification: 246/383

(under subclass 382) Subject matter, having switch-connected frogs in which sections of the siding rail slide, swing, or fold into position, overlapping the main-line rail.

SEE OR SEARCH THIS CLASS, SUBCLASS:

274, 376 and 429, for similar frog structure.