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Class Information
Number: 294/86.18
Name: Handling: hand and hoist-line implements > Grapple > Well type > With releasing means > Excessive force-responsive
Description: Grapples having means that is intended to release or rupture when excessive force is applied to the engaged grapple to permit disengagement from the grappled object.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7249633 |
Release tool for coiled tubing |
Jul. 31, 2007 |
| 7021382 |
Downhole axial force generating tool |
Apr. 4, 2006 |
| 6196309 |
Down hole pulling tool and method of use |
Mar. 6, 2001 |
| 5782297 |
Retrieval tool for back pressure valve and tree test plug |
Jul. 21, 1998 |
| 5474124 |
Wellhead retrieval tool assembly |
Dec. 12, 1995 |
| 5470118 |
Shear device for well service tools |
Nov. 28, 1995 |
| 5398753 |
Wireline hydraulic retrieving tool and downhole power generating assembly |
Mar. 21, 1995 |
| 5265927 |
Downhole fishing tool |
Nov. 30, 1993 |
| 5228507 |
Wireline hydraulic retrieving tool |
Jul. 20, 1993 |
| 5197773 |
Running and pulling tool |
Mar. 30, 1993 |
| 5158142 |
Apparatus for releasing a pipe string from an object stuck downhole by continuously applying tension to said apparatus |
Oct. 27, 1992 |
| 5145228 |
Running and pulling tool |
Sep. 8, 1992 |
| 5066060 |
Running tool |
Nov. 19, 1991 |
| 4848820 |
Wireline running and pulling tool |
Jul. 18, 1989 |
| 4838594 |
Running and pulling tool |
Jun. 13, 1989 |
| 4801167 |
Downhole well fishing assembly |
Jan. 31, 1989 |
| 4793411 |
Retrievable gravel packer and retrieving tool |
Dec. 27, 1988 |
| 4767145 |
Running and pulling tool |
Aug. 30, 1988 |
| 4697790 |
Pulley hoists |
Oct. 6, 1987 |
| 4696502 |
Dual string packer mill |
Sep. 29, 1987 |
| 4616721 |
Packer Mill |
Oct. 14, 1986 |
| 4558895 |
Pulling tool |
Dec. 17, 1985 |
| 4548437 |
Downhole well fishing assembly |
Oct. 22, 1985 |
| 4488596 |
Locking apparatus for use in a subterranean well |
Dec. 18, 1984 |
| 4379488 |
Latch for well tool |
Apr. 12, 1983 |
| 4332410 |
Retrieving tool for well packer |
Jun. 1, 1982 |
| 4317485 |
Pump catcher apparatus |
Mar. 2, 1982 |
| 4185865 |
Releasable wireline overshot |
Jan. 29, 1980 |
| 4181344 |
Running tool |
Jan. 1, 1980 |
| 4157199 |
Apparatus for retrieving a tubular member from a well |
Jun. 5, 1979 |
| 4127297 |
Releasable overshot |
Nov. 28, 1978 |
| 4035011 |
Soft set running tool |
Jul. 12, 1977 |
| 3960399 |
Setting and retrieval device for down-hole equipment |
Jun. 1, 1976 |
| 3944273 |
Retrieving tool for wellhead packing |
Mar. 16, 1976 |
| 3942833 |
Running tools |
Mar. 9, 1976 |
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