US PATENT SUBCLASS 238 / 193
.~.~.~ Interlocked base sections

Current as of: June, 1999
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238 /   HD   RAILWAYS: SURFACE TRACK

151  DF  RAIL JOINTS {28}
187  DF  .~ Chair {3}
188  DF  .~.~ Twin {5}
193.~.~.~ Interlocked base sections {1}
194  DF  .~.~.~.~> Longitudinal keys

DEFINITION

Classification: 238/193

The twin-joint members interlock beneath the rail-bases.The interlocking may be flanged, lugged, or hooked.