US PATENT SUBCLASS 173 / 178
.~.~ Having torque responsive clutch

Current as of: June, 1999
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173 /   HD   TOOL DRIVING OR IMPACTING

2  DF  AUTOMATIC CONTROL OF POWER OPERATED MEANS {4}
176  DF  .~ Drive means responsive to torque or speed condition {5}
178.~.~ Having torque responsive clutch

DEFINITION

Classification: 173/178

Having torque responsive clutch:

(under subclass 176) Apparatus wherein a device to engage or to disengage the connection between the drive means and the power means is provided and operates in response to a change in the force applied to the tool to move the tool about an axis.