Metal working – Means to assemble or disassemble – Coupling to conduit
Patent
1992-08-12
1993-07-13
Watson, Robert C.
Metal working
Means to assemble or disassemble
Coupling to conduit
B23P 1902
Patent
active
052262316
ABSTRACT:
A tool for joining plastic pipe and fittings that provides for a quarter turn rotation of a pipe fitting while simultaneously pulling a free end of a longitudinally aligned pipe section into the fitting. The tool includes an inner ring that slips over a free end of a pipe section and is secured thereto by inwardly directed mounting screws, and an outer ring coaxially circumposed about, and rotatably connected to, the inner ring. A detachable semicircular partial collar fits snugly about the outer ring and reversibly attaches to a pair of outwardly directed nibs positioned on opposite sides of the outer ring in a plane that bisects the pipe section. A crossbar is mounted between a pair of lugs attached to a central portion of the partial collar. A handle is pivotally mounted above a yoke and chain that encircle and grasp the fitting. Drawbars pivotally mounted to a lower end of the handle engage the crossbar so that longitudinal movement of the handle applies a longitudinal force equally to opposite sides of the pipe section, and rotation of the handle causes the fitting to twist about a longitudinal axis.
REFERENCES:
patent: 3281929 (1966-11-01), Shinnich
patent: 3364555 (1968-01-01), Swink
patent: 3471919 (1969-10-01), Evans
patent: 3710427 (1973-01-01), Doty
patent: 4178668 (1979-12-01), George
patent: 4519122 (1985-05-01), Miller
Coyne Brian J.
Watson Robert C.
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