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Class Information
Number: 294/86.31
Name: Handling: hand and hoist-line implements > Grapple > Well type > Contracting grappling means (e.g., overshot) > Cammed grappling means > Inwardly biased grappling means
Description: Grapples wherein the grappling means is biased toward its engaged position.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7617867 |
Overshot tool |
Nov. 17, 2009 |
| 7503388 |
Circumferentially loaded slip-type overshot retrieval tool |
Mar. 17, 2009 |
| 7246398 |
Apparatus and method for removing an object from a drain |
Jul. 24, 2007 |
| 7032678 |
Horseshoe shaped elevator and method for using same |
Apr. 25, 2006 |
| 6915868 |
Elevator apparatus and method for running well bore tubing |
Jul. 12, 2005 |
| 6758267 |
Process and arrangement for retrieving of equipment from bore holes |
Jul. 6, 2004 |
| 5865253 |
Wellbore overshot |
Feb. 2, 1999 |
| 5413171 |
Latching and sealing assembly |
May. 9, 1995 |
| 5149163 |
On and off fishing tool |
Sep. 22, 1992 |
| 4936618 |
Grapple connection for coiled tubing |
Jun. 26, 1990 |
| 4860838 |
Latching bit sub |
Aug. 29, 1989 |
| 4515403 |
Overshot |
May. 7, 1985 |
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