Internal pipe clamp

Details Internal pipe clamp Internal pipe clamp

1998-05-15

2000-08-29

Ryan, Patrick

Metal fusion bonding

Including means to force or clamp work portions together...

Comprising tube aligning means

228212, 219 61, 21912511, B23K 3702, B23K 3102, B23K 522, B23K 912

Patent

active

061095036

ABSTRACT:
An internal spacer and expander clamp for use when welding two sections of pipe together. There are two spider rings supported from a frame, one in one section of pipe and the other across the joint in the other pipe. Each spider ring has a plurality of holes with a piston with a pipe contacting pad in each hole. A rotor is supported within said spider ring. A linkage bar is pivotally connected at one end to the piston and at the other end to a pin in a cut-out in the rotor. The convex ends of the linkage bar mates with a concave cut-out in the piston and the other end in a concave cut-out in the rotor. A power linkage rotates the rotor such that in a first position the longitudinal axis of the piston is out of alignment with the longitudinal axis of the linkage bar and in a second rotational position thus are aligned forcing the shoe against the inner surface of the pipe with great force.

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