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Class Information
Number: 294/91
Name: Handling: hand and hoist-line implements > Grapple > Collar-engaging > Rigid yoke
Description: Grapples in which the element upon which the collar rests is an integral or rigid piece usually having a latch device to prevent accidental disengagement of the load.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6915868 |
Elevator apparatus and method for running well bore tubing |
Jul. 12, 2005 |
| 6789827 |
Multifunction drum lifter and wrench |
Sep. 14, 2004 |
| 5979022 |
T-bar wireline clamp |
Nov. 9, 1999 |
| 5961379 |
Tool grinding machine |
Oct. 5, 1999 |
| 5954378 |
Lifting tool |
Sep. 21, 1999 |
| 5033784 |
Mold balancing lifting bar |
Jul. 23, 1991 |
| 4893860 |
Device for gripping and suspending drill pipe stand |
Jan. 16, 1990 |
| 4483564 |
Oil well sucker rod safety block |
Nov. 20, 1984 |
| 4419785 |
Bolt eyelet with bolt-engaging shoulder for electrical transmission lines |
Dec. 13, 1983 |
| 4365925 |
Manhole cover lifter |
Dec. 28, 1982 |
| 4188141 |
Butt hook for a logging choker line |
Feb. 12, 1980 |
| 4058339 |
Pivotal latch for a sucker rod puller |
Nov. 15, 1977 |
| 4032183 |
Pipe elevator |
Jun. 28, 1977 |
| 3978607 |
Snail snare |
Sep. 7, 1976 |
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