US PATENT SUBCLASS 37 / 245
.~.~ Tool arresting means responsive to sensed condition

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  DF  .~ Motorized rotary excavating tool {8}
245.~.~ Tool arresting means responsive to sensed condition

DEFINITION

Classification: 37/245

Tool arresting means responsive to sensed condition:

(under subclass 244) Apparatus including means reacting to a sensed operating condition encountered by the apparatus which interrupts the rotation of the shaft.