Handling: hand and hoist-line implements – Grapple – Pivoted jaws
Patent
1990-07-30
1992-06-09
Cherry, Johnny D.
Handling: hand and hoist-line implements
Grapple
Pivoted jaws
2941101, B66C 144, B66C 162
Patent
active
051201003
ABSTRACT:
Lifting and Gripping Apparatus for massive workpieces such as pipes comprises a stationary member and two moveable members, pivoted thereto at points higher than the springline of the workpiece and displaced from one another so as to operate in separate paths. Latching members operate in separate paths between an open position in which there is disengagement with the workpiece and a closed position in which there is engagement with the workpiece for purposes of lifting. Lifting force produces motion of the moveable members through associated cam members such that there is engagement with the workpiece.
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Cherry Johnny D.
Crescent Pipe Tongs, Incorporated
Evanns Joseph R.
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