US PATENT SUBCLASS 464 / 162
COUPLING FACILITATES RELATIVE AXIAL MOTION BETWEEN COUPLED MEMBERS

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

162COUPLING FACILITATES RELATIVE AXIAL MOTION BETWEEN COUPLED MEMBERS {3}
163  DF  .~> Coupling between rotary drive table and axially movable drill string {2}
167  DF  .~> Coupler includes antifriction rolling body engageable with axially moveable member {1}
169  DF  .~> Including spring to bias member in axial direction

DEFINITION

Classification: 464/162

COUPLING FACILITATES RELATIVE AXIAL MOTION BETWEEN COUPLED MEMBERS:

(under the class definition) A flexible coupling having means to accommodate relative movement between the coupled members along their rotational axes.

SEE OR SEARCH THIS CLASS, SUBCLASS:

18+, for a coupling facilitating relative axial motion between interconnected shafts in a drill string.

24+, for a coupling wherein a fluid is used to affect movement of coupled members.

51+, for a coupling facilitating relative axial motion wherein torque is transmitted via an element made of flexible material.

172, for a coupling facilitating relative telescopic movement between mating housing parts.

SEE OR SEARCH CLASS

173, Tool Driving or Impacting, 165+, for means to drive a tool about an axis and including a relatively fixed drive for an advancing tool.

384, Bearings,

43+, 49, 50+ for an antifriction ball or roller bearing.