US PATENT SUBCLASS 299 / 47
.~.~ Driven flexible member causes 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.~.~ Driven flexible member causes advance {2}
48  DF  .~.~.~> Cutter shiftable horizontally
49  DF  .~.~.~> Driver for member rotates about horizontal axis {1}

DEFINITION

Classification: 299/47

(under subclass 42) Apparatus in which the cutter is caused to advance by means of a cable or similar flexible element to which power is applied to pull the apparatus along, and which is generally described as having one extremity anchored against a fixed point in the working area, the power usually being applied by coiling the other end of the flexible member about a drum.

SEE OR SEARCH CLASS

173, Tool Driving or Impacting,

151, for a tool driving device of general utility combined with a driven flexible advance causing or controlling means.

254, Implements or Apparatus for Applying Pushing or Pulling Force,

264+, for apparatus for hauling or hoisting a load including a driven device which contacts and pulls on a cable.