Pipe clamp

Details Pipe clamp Pipe clamp

1993-09-03

1995-04-25

Cherry, Johnny D.

Handling: hand and hoist-line implements

Hand bars and hand barrows

Opposing jaws

294116, B65G 712

Patent

active

054092809

ABSTRACT:
A pipe clamp for clamping to a pipe to facilitate lifting and movement of the pipe. The pipe clamp in one aspect has a body member with one fixed arm and with one arm movably connected thereto; or with two arms movably connected to the body member. Preferably, when there are two movable arms, they are urged outwardly by springs biased against the arms and the body member. Gripping elements are provided on the arms and on the body member for contacting the pipe and gripping it. A cylinder movably mounted in a channel in the body member is disposed for movement when a lifting force is applied to a lift member movably connected to the cylinder. As the cylinder moves in response to the lifting force, cam surfaces thereon are forced against rollers movably mounted in plungers, moving the plungers outwardly from the cylinder to contact a portion of the arms thereby forcing the arms toward each other so that a pipe disposed therebetween is clamped between the arms. A releasable locking mechanism inhibits unwanted escape of the pipe from the clamp; and in one aspect, inhibits the application of excessive force to the pipe.

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"Pipe Grabs Beam Clamps," Clamp-Co, Incorporated; Bulletin 1-91; prior to 1992.
"Lifting Tongs," McMaster-Carr, prior to 1992.

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