Tools – Wrench – screwdriver – or driver therefor – Machine
Patent
1990-03-13
1991-01-22
Meislin, D. S.
Tools
Wrench, screwdriver, or driver therefor
Machine
81 5721, B25B 2800
Patent
active
049861468
ABSTRACT:
A camming member for power tongs is provided, comprising a body including a central opening formed therein, the body being rotatable about a center point within the central opening, the body further including a slot for positioning a tubular member within the central opening, the body further including at least one cam surface adjacent to the central opening, the cam surface being formed such that, constant compressional force is applied to the tubular member by jaws urged inward by the cam surface. It is preferable that the body is ring-shaped and is provided with gear teeth radially extending from the outer periphery of the body.
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Kiesel William David
Meislin D. S.
Tucker Robert C.
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