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Class Information
Number: 294/86.3
Name: Handling: hand and hoist-line implements > Grapple > Well type > Contracting grappling means (e.g., overshot) > Cammed grappling means
Description: Grapples having a grappling means that is urged inwardly by means including a cam.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7311346 |
Arrangement in a gripper mechanism for a free pipe/rodlike end portion of a downhole tool |
Dec. 25, 2007 |
| 7083209 |
Hydraulic overshot tool without a nozzle, and method of retrieving a cylinder |
Aug. 1, 2006 |
| 6425615 |
Overshot tool |
Jul. 30, 2002 |
| 6196309 |
Down hole pulling tool and method of use |
Mar. 6, 2001 |
| 6095583 |
Wellbore fishing tools |
Aug. 1, 2000 |
| 5605366 |
External pulling tool and method of operation |
Feb. 25, 1997 |
| 5580114 |
Hydraulically actuated fishing tool |
Dec. 3, 1996 |
| 5265927 |
Downhole fishing tool |
Nov. 30, 1993 |
| 5085479 |
Vertically manipulated ratchet fishing tool |
Feb. 4, 1992 |
| 5054832 |
Fishing tool for retrieving implements from a hole |
Oct. 8, 1991 |
| 5054833 |
Releasable overshot |
Oct. 8, 1991 |
| 4976482 |
Apparatus for clamping pipe or tube |
Dec. 11, 1990 |
| 4944543 |
Ice auger extractor for retrieving augers or similar devices from a bore hole |
Jul. 31, 1990 |
| 4885123 |
Apparatus for handling constituent elements of reactor core |
Dec. 5, 1989 |
| 4883118 |
Combination tubing cutter and releasing overshot |
Nov. 28, 1989 |
| 4801167 |
Downhole well fishing assembly |
Jan. 31, 1989 |
| 4660863 |
Casing patch seal |
Apr. 28, 1987 |
| 4558895 |
Pulling tool |
Dec. 17, 1985 |
| 4548437 |
Downhole well fishing assembly |
Oct. 22, 1985 |
| 4476086 |
Coupler for nuclear reactor absorber rods |
Oct. 9, 1984 |
| 4453756 |
Wireline fishing tool |
Jun. 12, 1984 |
| 4436334 |
Releasing overshot apparatus |
Mar. 13, 1984 |
| 4351631 |
Transfer device for parisons and finished products in injection blow molding devices |
Sep. 28, 1982 |
| 4332410 |
Retrieving tool for well packer |
Jun. 1, 1982 |
| 4259153 |
Device for removal of fuel assemblies and cans of control and safety system from core of nuclear reactor |
Mar. 31, 1981 |
| 4232894 |
Selectively releasable overshot and pull tool |
Nov. 11, 1980 |
| 4185865 |
Releasable wireline overshot |
Jan. 29, 1980 |
| 4124245 |
Well tool |
Nov. 7, 1978 |
| 4061389 |
Combination wire line releasable overshot and pull tool |
Dec. 6, 1977 |
| 4030745 |
Tool retriever for wells |
Jun. 21, 1977 |
| 4023847 |
Overshot tool |
May. 17, 1977 |
| 4004835 |
Overshot |
Jan. 25, 1977 |
| 3950021 |
Pulling and running tool |
Apr. 13, 1976 |
| 3942833 |
Running tools |
Mar. 9, 1976 |
| 3930679 |
Dry hole wire core barrel apparatus |
Jan. 6, 1976 |
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