US PATENT SUBCLASS 104 / 7.3
.~.~ Under-track ballast sled or plow


Current as of: June, 1999
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104 /   HD   RAILWAYS

2  DF  TRACK LAYERS {11}
7.1  DF  .~ Track raising car {2}
7.3.~.~ Under-track ballast sled or plow


DEFINITION

Classification: 104/7.3

Under-track ballast sled or plow:

(under subclass 7.1) Apparatus wherein the track-supported vehicle includes means inserted between the roadbed and connected rails and ties for raising the track from the roadbed as it passes along underneath the track; the track raising means further functioning to either (1) evenly distribute, level, or smooth the roadbed material supporting the track befor allowing the levelled or smoothed roadbed, or (2) scrape away a portion of the roadbed material supporting the track before allowing the raised track to settle back onto the remaining roadbed or sub-grade.