US PATENT SUBCLASS 464 / 167
.~ Coupler includes antifriction rolling body engageable with axially moveable member

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}
167.~ Coupler includes antifriction rolling body engageable with axially moveable member {1}
168  DF  .~.~> Recirculating rolling bodies

DEFINITION

Classification: 464/167

Coupler includes antifriction rolling body engageable with axially moveable member:

(under subclass 162) Subject matter wherein said coupling means includes a body rotatable about its own axis and engaging the external periphery of one of said members for facilitating axial movement of said one of said members.

SEE OR SEARCH THIS CLASS, SUBCLASS:

165, for an antifriction roller engageable with an axially movable drill string.