US PATENT SUBCLASS 173 / 5
.~.~ Responsive to torque or speed condition of drive

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

2  DF  AUTOMATIC CONTROL OF POWER OPERATED MEANS {4}
4  DF  .~ Tool advance causing or controlling means {2}
5.~.~ Responsive to torque or speed condition of drive {3}
6  DF  .~.~.~> With additional control by means sensing condition of advance means
7  DF  .~.~.~> Drive motor motivating energy condition initiates control {1}
9  DF  .~.~.~> Fluid flow or pressure operated advance means

DEFINITION

Classification: 173/5

(under subclass 4) Apparatus in which the sensing means senses a condition of (1) force applied to the tool to drive the tool about an axis or (2) rate of motion of the drive means.

SEE OR SEARCH CLASS

408, Cutting by Use of Rotating Axially Moving Tool,

6, and 8+ for a drilling machine having torque or penetration resistance responsive control of a feed mechanism.