US PATENT SUBCLASS 175 / 113
WITH MEANS TO SIMULTANEOUSLY FEED AND ROTATE TOOL FROM A SINGLE MECHANICAL ELEMENT

Current as of: June, 1999
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175 /   HD   BORING OR PENETRATING THE EARTH

113WITH MEANS TO SIMULTANEOUSLY FEED AND ROTATE TOOL FROM A SINGLE MECHANICAL ELEMENT {3}
114  DF  .~> Constant rotation rate permitted regardless of (1) release of feed force, or (2) change in feed rate
118  DF  .~> With feed anchor in earth wall being bored
121  DF  .~> Rotary drive for relatively advancing feed screw

DEFINITION

Classification: 175/113

(under the class definition) Apparatus including means by which a boring tool is simultaneously rotated and fed along the boring axis by a drive originating from one mechanical movement.

(1) Note. Separate drive and feed motors which are actuated by a common source (e.g., fluid pressure motors having common supply pump) are excluded from this subclass, and are classified in the appropriate feed or drive subclass.

SEE OR SEARCH CLASS

173, Tool Driving or Impacting,

145+, for a tool advance causing or controlling means in which drive and advance originate from the same mechanical element.

408, Cutting by Use of Rotating Axially Moving Tool,

129+, for a feed means for a boring, drilling or tapping apparatus.