Load-unload device--limit overload sensing device

Details Load-unload device--limit overload sensing device Load-unload device--limit overload sensing device

1983-02-07

1985-02-05

Valenza, Joseph E.

Conveyors: power-driven

Conveyor system for moving a specific load as a separate unit

System includes an oscillating or reciprocating load...

198484, 198524, 198634, B65G 1712, B65G 4300

Patent

active

044974000

ABSTRACT:
A load-unload device is disclosed for use in a vertical conveyor system hng means for sensing a jam condition between a downward moving conveyor tray and an article that has failed to remove from the load-unload device. The device includes linkage means for creating an over-center locked condition automatically releasable at a preset force. A spring receives the load due to a jam and develops the force necessary to unlock the linkage and allow the platform to move to a position for relieving the overload. A limit switch opens the conveyor drive motor down circuit as the platform moves. Provision is made for presetting a limited amount of platform movement without shutting off the conveyor.

REFERENCES:
patent: 3680685 (1972-08-01), Halton
patent: 4002231 (1976-01-01), Doty

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