US PATENT SUBCLASS 299 / 55
.~ Rotary cutter head with advance direction coincident to rotary axis

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}
55.~ Rotary cutter head with advance direction coincident to rotary axis {2}
56  DF  .~.~> With material-handling means {1}
58  DF  .~.~> Machine follows cutter into opening formed thereby {3}

DEFINITION

Classification: 299/55

(under subclass 29) Apparatus in which the cutter is continuously moved unidirectionally about an axis and is caused to advance in the direction of a line corresponding to said axis.

(1) Note. For the definition of cutter see this class, subclass 79.