US PATENT SUBCLASS 464 / 166
.~.~.~ With screw device for adjusting radial position of rolling body

Current as of: June, 1999
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464 /   HD   ROTARY SHAFTS, GUDGEONS, HOUSINGS, AND FLEXIBLE COUPLINGS FOR ROTARY SHAFTS

162  DF  COUPLING FACILITATES RELATIVE AXIAL MOTION BETWEEN COUPLED MEMBERS {3}
163  DF  .~ Coupling between rotary drive table and axially movable drill string {2}
165  DF  .~.~ Coupler includes antifriction rolling body engageable with drill string {1}
166.~.~.~ With screw device for adjusting radial position of rolling body

DEFINITION

Classification: 464/166

With screw device for adjusting radial position of rolling body:

(under subclass 165) Subject matter and including an elongated threaded member rotatable about its own axis and coupled to said rotary body in such a manner that rotary movement of the threaded member causes linear movement of said rotary body in a direction toward or away from the rotational axis of the pipe.