Conveyors: power-driven – Conveyor section – Live roll
Patent
1994-11-17
1995-10-10
Valenza, Joseph E.
Conveyors: power-driven
Conveyor section
Live roll
198782, 198788, 1985022, 193 35TE, B65G 1306
Patent
active
054563470
ABSTRACT:
Conveyors containing powered rollers arranged in zones, each of which zones may be independently controlled. Such conveyors are particularly useful in transitioning object flow from a constant speed conveyor such as in a plant or warehouse, to manual offloading operations which tends to be more intermittent in nature. The independently controlled zones automatically activate and deactivate in a manner that allows objects to accumulate in a compact fashion on the conveyor when offloading operations stop, but once again to space themselves apart from one another as offloading operations resume and flow once again reaches steady state. This increased spacing during steady state flow allows the conveyor to begin absorbing objects in the accumulation mode if and when offloading stops again. Among other beneficial effects is an ergonomic one: Workers are freed from the stress of knowing that objects flowing on the conveyor will simply be propelled off the end if they take a momentary break.
REFERENCES:
patent: 1725740 (1929-08-01), Schulte
patent: 2915167 (1959-12-01), Berger
patent: 3242342 (1966-03-01), Gabar
patent: 4852712 (1989-08-01), Best
patent: 5042644 (1991-08-01), Davis
patent: 5060785 (1991-10-01), Garrity
patent: 5147025 (1992-09-01), Flippo
patent: 5224584 (1993-07-01), Best et al.
Best John W.
Flippo Bobby K.
Irby Paul W.
Ewing, IV James L.
Northstar Industries, Inc.
Stockwell Mitchell G.
Valenza Joseph E.
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