US PATENT SUBCLASS 175 / 195
.~ Rotary drive for a relatively advancing tool (e.g., rotary table)


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

170  DF  WITH TOOL DRIVE PRIME MOVER OR ABOVE-GROUND MECHANICAL MOTION CONVERTING DRIVE MEANS {5}
195.~ Rotary drive for a relatively advancing tool (e.g., rotary table)


DEFINITION

Classification: 175/195

(under subclass 170) Apparatus in which the drive is of the type commonly called a rotary table, such drive being adapted to remain relatively axially fixed while the tool shaft being rotated thereby advances relative to the rotary table.

SEE OR SEARCH THIS CLASS, SUBCLASS:

121, for a rotary drive for a relatively advancing feed screw in a single mechanical movement feeding and rotating a tool, said feed screw generally also comprising the tool drive shaft.

SEE OR SEARCH CLASS

74, Machine Element or Mechanism, appropriate subclasses, and particularly

434+, for a gear element, per se.

173, Tool Driving or Impacting, 165+, for a relatively fixed drive of an advancing tool.

464, Rotary Shafts, Gudgeons, Housings, and Flexible Couplings for Rotary Shafts,

163+, for a coupling between a rotary drive table and an axially movable drill string.