US PATENT SUBCLASS 144 / 28.5
.~.~.~ Work controlled switch for tool drive

Current as of: June, 1999
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144 /   HD   WOODWORKING

2.1  DF  SPECIAL-WORK MACHINE {34}
28.1  DF  .~ Pencil sharpening {3}
28.3  DF  .~.~ Movable tool {4}
28.5.~.~.~ Work controlled switch for tool drive

DEFINITION

Classification: 144/28.5

Work controlled switch for tool drive:

(under subclass 28.3) Machine including means to connect the means for moving the tool to, and to disconnect it from, a source of energy, and wherein the means to connect and disconnect is actuated by movement of the workpiece.