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Class Information
Number: 464/19
Name: Rotary shafts, gudgeons, housings, and flexible couplings for rotary shafts > Flexible coupling between fluid-conducting rotary shafts (e.g., coupling between sections of drill string, etc.) > Relative angular displacement of axes of shafts
Description: Subject matter wherein said coupling facilitates changing the angle defined by the longitudinal axes of the shafts with respect to each other.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7186182 |
Drive line for down hole mud motor |
Mar. 6, 2007 |
| 7182158 |
Drilling device comprising a rotational drive |
Feb. 27, 2007 |
| 7165609 |
Apparatus for handling tubular goods |
Jan. 23, 2007 |
| 6997811 |
Sealed flexible motor coupling |
Feb. 14, 2006 |
| 6949025 |
Downhole motor universal joint assembly |
Sep. 27, 2005 |
| 6915865 |
Locking swivel apparatus with a supplemental internal locking mechanism |
Jul. 12, 2005 |
| 6843332 |
Three dimensional steerable system and method for steering bit to drill borehole |
Jan. 18, 2005 |
| 6598687 |
Three dimensional steerable system |
Jul. 29, 2003 |
| 6378630 |
Locking swivel device |
Apr. 30, 2002 |
| 6302797 |
Flexible drill pipe |
Oct. 16, 2001 |
| 6059661 |
Shaft alignment |
May. 9, 2000 |
| 5704838 |
Down-hole motor universal joint |
Jan. 6, 1998 |
| 5671816 |
Swivel/tilting bit crown for earth-boring drills |
Sep. 30, 1997 |
| 5503236 |
Swivel/tilting bit crown for earth-boring drills |
Apr. 2, 1996 |
| 5203595 |
Dovetail-type coupling device and method |
Apr. 20, 1993 |
| 5007491 |
Downhole drilling apparatus progressive cavity drive train with sealed coupling |
Apr. 16, 1991 |
| 5007490 |
Progressive cavity drive train with elastomeric joint assembly for use in downhole drilling |
Apr. 16, 1991 |
| 4904228 |
Universal ball joint |
Feb. 27, 1990 |
| 4685895 |
Stabilizer mechanism for use in drilling deviated well bores |
Aug. 11, 1987 |
| 4679638 |
Downhole progressive cavity type drilling motor with flexible connecting rod |
Jul. 14, 1987 |
| 4625815 |
Drilling equipment, especially for use in underground mining |
Dec. 2, 1986 |
| 4575359 |
Rotary drive coupling |
Mar. 11, 1986 |
| 4449953 |
Articulated coupling |
May. 22, 1984 |
| 4368786 |
Downhole drilling apparatus |
Jan. 18, 1983 |
| 4343369 |
Apparatus for drilling straight portion of a deviated hole |
Aug. 10, 1982 |
| 4290494 |
Flexible shaft and roof drilling system |
Sep. 22, 1981 |
| 4286676 |
Crank connector for directional drilling |
Sep. 1, 1981 |
| 4263788 |
Universal joint apparatus having sliding plate construction for separating thrust and torque forces |
Apr. 28, 1981 |
| 4254638 |
Positive release means for articulated flexible shaft |
Mar. 10, 1981 |
| 4243112 |
Vibrator-assisted well and mineral exploratory drilling, and drilling apparatus |
Jan. 6, 1981 |
| 4236737 |
Conduit swivel joint |
Dec. 2, 1980 |
| 4233820 |
Flexible drill pipe |
Nov. 18, 1980 |
| 4226288 |
Side hole drilling in boreholes |
Oct. 7, 1980 |
| 4157022 |
Pressure compensating coupling for in hole motors |
Jun. 5, 1979 |
| 4149391 |
Flexible drill pipe |
Apr. 17, 1979 |
| 4062412 |
Flexible shaft drilling system |
Dec. 13, 1977 |
| 4031713 |
Flexible drill pipe |
Jun. 28, 1977 |
| 3958649 |
Methods and mechanisms for drilling transversely in a well |
May. 25, 1976 |
| 3955377 |
Flexible couplings |
May. 11, 1976 |
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