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Class Information
Number: 464/163
Name: Rotary shafts, gudgeons, housings, and flexible couplings for rotary shafts > Coupling facilitates relative axial motion between coupled members > Coupling between rotary drive table and axially movable drill string
Description: Subject matter wherein one of said members is a rotating pipe used in an earth-boring operation, and the other of said members is a device positioned around the external circumference of the pipe for transmitting rotary torque to the pipe.

Sub-classes under this class:

Class Number Class Name Patents
464/165 Coupler includes antifriction rolling body engageable with drill string 6
464/164 Coupler includes endless belt or chain run engageable with drill string and moveable in direction of axial advance 0

Patents under this class:

Patent Number Title Of Patent Date Issued
8684851 Floating sub tool Apr. 1, 2014
6994628 Locking swivel apparatus with replaceable internal gear members Feb. 7, 2006
6915865 Locking swivel apparatus with a supplemental internal locking mechanism Jul. 12, 2005
6848520 Bushing for a drilling rig Feb. 1, 2005
6651737 Collar load support system and method Nov. 25, 2003
6386283 Elevator and spider converter May. 14, 2002
6089338 Flush mounted self aligning spider Jul. 18, 2000
5996712 Mechanical locking swivel apparatus Dec. 7, 1999
5263899 Cylindrical telescopic kelly-bar apparatus Nov. 23, 1993
5107941 Kelly saver drive Apr. 28, 1992
4328857 Mounting device for heat recovery wheels May. 11, 1982
4317493 Kelly drive bushing adapter Mar. 2, 1982
4312404 Rotating blowout preventer Jan. 26, 1982
4285215 Rotary table and kelly guard Aug. 25, 1981
4254638 Positive release means for articulated flexible shaft Mar. 10, 1981

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