Conveyors: power-driven – Conveyor section – Live roll
Patent
1991-12-24
1992-09-15
Dayoan, D. Glenn
Conveyors: power-driven
Conveyor section
Live roll
198790, B65G 1307
Patent
active
051470241
ABSTRACT:
With the screw driven into the female-threaded hole which radially extends through the hollow roller and opens to the outer peripheral surface of the cylindrical portion forming a part of the sprocket, the hollow roller is coupled to the sprocket and functions as a drive roller adapted to rotate integrally therewith. When both female-threaded holes have no screw received therein, the hollow roller functions as a free roller which is rotatable with respect to the sprocket. With the screw driven into the female-threaded hole opening to the outer peripheral surface of the diameter-enlarged block which forms a part of the friction tube, the hollow roller is coupled to said friction tube and functions as a friction roller adapted, upon inhibition of its rotation, to stop rotation of the friction tube and to generate a slippage between the friction surface defined by the friction tube and the friction surface defined by the sprocket but, so long as being allowed to rotate, to rotate integrally with both the friction tube and the sprocket. In this manner, the hollow roller can be used as any one of these drive roller, free roller and friction roller merely by selectively driving or removing the respective screws into or from the respective female-threaded holes.
REFERENCES:
patent: 3605990 (1971-09-01), Cowen, Jr.
patent: 4421224 (1983-12-01), Dingman
patent: 4448302 (1984-05-01), Weaver et al.
patent: 4508212 (1985-04-01), Bolle et al.
patent: 4993541 (1991-02-01), Roh
patent: 5012920 (1991-05-01), Wakefield
Burns Robert E.
Dayoan D. Glenn
Lobato Emmanuel J.
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