Hand tool for flaring a tube

Metal deforming – By use of non-deforming work-gripping clamp and relatively... – Clamp structure constitutes sole initial metal-deforming...

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Details

7245316, 724812, 723701, B21D 1900

Patent

active

057821283

ABSTRACT:
A manually operable hand tool apparatus for providing a radially outward flare, known as push connect flare, away from the distal end of a deformable tube. The hand tool comprises a gripper-die means for securing the tube, a yoke portion having internal threads and a manual hydraulic pump portion. The yoke moves axially on a threaded positioning screw that is rigidly connected to the manual hydraulic pump portion. A vise means comprising a screw and a tightening rod is attached to the yoke. The vise is used to secure the gripper-die means to the yoke. The pump portion comprises a cylindrical body, a flaring piston, a threaded positioning screw, a pumping linkage system and a relief valve. An adapter-die is secured by a guide nut which is connected to the flaring piston. Alternative adapter-die and guide nut designs are also used to connect the die to the flaring piston. A lever arm is used to pump oil and to energize the flaring piston, thereby forcing the adapter-die to deform the rigidly restrained tube into the outward radial flair.

REFERENCES:
patent: 2277410 (1942-03-01), Neukirch
patent: 2493127 (1950-01-01), Franck
patent: 2709474 (1955-05-01), Franck
patent: 2869407 (1959-01-01), Swanson
patent: 3466707 (1969-09-01), Click
patent: 3972218 (1976-08-01), Pawloski
patent: 4331019 (1982-05-01), Smith
patent: 4494398 (1985-01-01), Svoboda
patent: 4873755 (1989-10-01), Johnston

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