POWER TONG AND JAW APPARATUS

Canada

PATENT NO 1191505
SERIAL NO

406564

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Abstract

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A power tong unit is shown which is operable as a closed head or open head unit. The jaws of the tong unit are rotatable to an extended pipe gripping position from either of opposite directions to make-up or break-out pipe from a single retracted position. An improved jaw for use in the tong unit has contoured gripping surfaces for gripping a wider variety of pipe diameters.

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