US PATENT SUBCLASS 37 / 244
.~ Motorized rotary excavating tool


Current as of: June, 1999
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37 /   HD   EXCAVATING

196  DF  SNOW OR ICE REMOVING OR GROOMING BY PORTABLE DEVICE {16}
244.~ Motorized rotary excavating tool {8}
245  DF  .~.~> Tool arresting means responsive to sensed condition
246  DF  .~.~> Electric motor drive
247  DF  .~.~> Rotor shaft adjustable relative to direction of travel
248  DF  .~.~> Diverse multistage rotary tools or tool portions (e.g., feeding and throwing, etc.) {1}
253  DF  .~.~> Fed by scraper blade {2}
257  DF  .~.~> Screw-type auger {1}
259  DF  .~.~> Centrifugal impeller
260  DF  .~.~> Having specific flow guide {2}


DEFINITION

Classification: 37/244

Motorized rotary excavating tool:

(under subclass 196) Apparatus including an implement fixed to a shaft driven rotationally by a mechanical power means when in use.