Conveyors: power-driven – Conveyor section – Endless conveyor
Patent
1979-05-03
1981-03-24
Husar, C. J.
Conveyors: power-driven
Conveyor section
Endless conveyor
474153, 474163, 474164, B65G 2306, F16H 5530
Patent
active
042575192
ABSTRACT:
This invention comprises a machine such as a conveyor having a chain and a powered sprocket for driving the chain. The sprocket comprises a circular main plate, individual chain-contacting teeth around the periphery thereof and each tooth being pivotally connected to the main plate for rotation relative thereto and each tooth having a cam contacting surface. An individual cam-stop is also pivotally mounted on the main plate for rotation relative thereto and adjacent to each tooth and each cam-stop has two cam areas capable of selectively contacting the cam contacting surface on its adjacent tooth, and means for positioning each of said cam-stops so that a cam area thereon will rotate its adjacent tooth towards contact with the chain as the chain enters the sprocket, and so that the other cam area will enable said tooth to rotate so as to release contact with said tooth with said chain at the desired release point between the chain and sprocket. Whereby the contact between the teeth and chain and the release of the sprocket by the chain are both accomplished without any sliding friction between the teeth and chain.
REFERENCES:
patent: 994896 (1911-06-01), Willson
patent: 1960719 (1934-05-01), Stibbs
patent: 2913093 (1959-11-01), Bevan
patent: 2919916 (1960-01-01), Davidson et al.
patent: 2931486 (1960-04-01), Zebarth
patent: 3216553 (1965-11-01), Leach
patent: 3867851 (1975-02-01), Gregory et al.
Cohen Moshe I.
Husar C. J.
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