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Class Information
Number: 166/331
Name: Wells > Valves, closures or changeable restrictors > Rotated operator > Lug in branched slot, e.g., "j" slot
Description: Devices comprising a lug on one part and a branched slot on the other part, and rotation of the operator moves the lug to a position whereby the valve is or can be operated.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7350598 |
Downhole tool |
Apr. 1, 2008 |
| 7337847 |
Multi-cycle downhole apparatus |
Mar. 4, 2008 |
| 7168492 |
Wellbore annulus flushing valve |
Jan. 30, 2007 |
| 6889771 |
Selective direct and reverse circulation check valve mechanism for coiled tubing |
May. 10, 2005 |
| 6830107 |
Fluid flow switching device |
Dec. 14, 2004 |
| 6662877 |
Formation isolation valve |
Dec. 16, 2003 |
| 6595296 |
Hydraulic control assembly |
Jul. 22, 2003 |
| 6516886 |
Well isolation system |
Feb. 11, 2003 |
| 6308783 |
Wellbore flow control device |
Oct. 30, 2001 |
| 6279657 |
Apparatus and method for circulating fluid in a well bore |
Aug. 28, 2001 |
| 6230807 |
Valve operating mechanism |
May. 15, 2001 |
| 6102060 |
Detachable locking device for a control valve and method |
Aug. 15, 2000 |
| 6095249 |
Down hole bypass valve |
Aug. 1, 2000 |
| 6082459 |
Drill string diverter apparatus and method |
Jul. 4, 2000 |
| 6009942 |
Wye block having a rotary guide incorporated therein |
Jan. 4, 2000 |
| 5901796 |
Circulating sub apparatus |
May. 11, 1999 |
| 5529126 |
Valve control apparatus |
Jun. 25, 1996 |
| 5396953 |
Positive circulating valve with retrievable standing valve |
Mar. 14, 1995 |
| 5372197 |
Tubing unloader apparatus and method |
Dec. 13, 1994 |
| 5311939 |
Multiple use well packer |
May. 17, 1994 |
| 5287930 |
Valve apparatus for use in sand control |
Feb. 22, 1994 |
| 5129459 |
Subsea flowline selector |
Jul. 14, 1992 |
| 5117912 |
Method of positioning tubing within a horizontal well |
Jun. 2, 1992 |
| 5029643 |
Drill pipe bridge plug |
Jul. 9, 1991 |
| 4979566 |
Washout mechanism for offshore wells |
Dec. 25, 1990 |
| 4979568 |
Annulus fluid pressure operated testing valve |
Dec. 25, 1990 |
| 4909326 |
Tubing unloader |
Mar. 20, 1990 |
| 4802359 |
Tool for measuring pressure in an oil well |
Feb. 7, 1989 |
| 4793417 |
Apparatus and methods for cleaning well perforations |
Dec. 27, 1988 |
| 4782897 |
Multiple indexing J-slot for model E SRO valve |
Nov. 8, 1988 |
| 4657082 |
Circulation valve and method for operating the same |
Apr. 14, 1987 |
| 4646838 |
Low pressure responsive tester valve with spring retaining means |
Mar. 3, 1987 |
| 4590998 |
Tubing valve |
May. 27, 1986 |
| 4537258 |
Low pressure responsive downhole tool |
Aug. 27, 1985 |
| 4458751 |
Method and apparatus for selective disengagement of a fluid transmission conduit operable under oppositely directed pressure differentials |
Jul. 10, 1984 |
| 4421171 |
Valve operable under oppositely directed pressure differentials |
Dec. 20, 1983 |
| 4415037 |
Ball valve loading apparatus |
Nov. 15, 1983 |
| 4403659 |
Pressure controlled reversing valve |
Sep. 13, 1983 |
| 4355685 |
Ball operated J-slot |
Oct. 26, 1982 |
| 4333530 |
Method and apparatus for cementing a casing |
Jun. 8, 1982 |
| 4315542 |
Mechanical tubing drain |
Feb. 16, 1982 |
| 4293038 |
Ball valve assembly |
Oct. 6, 1981 |
| 4270606 |
Apparatus for selective disengagement of a fluid transmission conduit and for control of fluid transmission from a well zone |
Jun. 2, 1981 |
| 4113012 |
Reclosable circulation valve for use in oil well testing |
Sep. 12, 1978 |
| 3960366 |
Reverse acting lock open crossover valve |
Jun. 1, 1976 |
| 3957114 |
Well treating method using an indexing automatic fill-up float valve |
May. 18, 1976 |
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