Internally mounted pipe clamping device

Details Internally mounted pipe clamping device Internally mounted pipe clamping device

1996-10-18

1999-03-02

Heinrich, Samuel M.

Metal fusion bonding

Process

With clamping or holding

228214, B23K 3704

Patent

active

058759557

ABSTRACT:
An internally mounted, portable clamping device for preventing distortion during welding of branch fittings on thin walled pipe. The clamping device comprises a pair of generally arc-shaped clamp halves which are inserted into a pipe and engaged by a screw inserted through a branch fitting which has been tack-welded to the outer surface of the pipe. Turning the screw in one direction moves the clamp halves radially apart until they engage and apply a radially tensive force on portions of the inner surface of the pipe immediately adjacent and opposite the fitting, thereby preventing the pipe from distorting during finish-welding of the fitting. The clamp is disengaged by turning the screw in the opposite direction.

REFERENCES:
patent: 3469299 (1969-09-01), Rogers
patent: 3960311 (1976-06-01), Griffiths
patent: 4496093 (1985-01-01), Taylor, Jr.
patent: 4611743 (1986-09-01), Williams

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