US PATENT SUBCLASS 299 / 50
.~.~.~.~ Axis transverse to direction of advance

Current as of: June, 1999
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299 /   HD   MINING OR IN SITU DISINTEGRATION OF HARD MATERIAL

29  DF  HARD MATERIAL DISINTEGRATING MACHINES {17}
42  DF  .~ Sidewall-working (e.g., drum-type cutter) {4}
47  DF  .~.~ Driven flexible member causes advance {2}
49  DF  .~.~.~ Driver for member rotates about horizontal axis {1}
50.~.~.~.~ Axis transverse to direction of advance

DEFINITION

Classification: 299/50

(under subclass 49) Apparatus in which the axis of rotation of the element is substantially perpendicular to the vertical wall.