Conveyors: power-driven – Conveyor section – Endless conveyor
Patent
1993-12-23
1995-10-10
Bidwell, James R.
Conveyors: power-driven
Conveyor section
Endless conveyor
198835, B65G 1502
Patent
active
054563496
ABSTRACT:
A belt conveyor having an endless conveyor belt with an upper run and a lower run. A frictional wheel frictionally engages the lower belt run opposite a belt support roller acting as a counterpressure roller and a pivot arm carrying the friction wheel. A spring urges the wheel against the lower belt run so that, on driving of the wheel in clockwise sense, the lower belt run is frictionally driven in corresponding direction. The pivot axis of the pivot arm is at a downstream--with respect to the drive direction of the lower belt run--side of a plane containing the axes of the friction wheel and counterpressure roller. The contact pressure force between lower belt run and friction wheel varies proportionally to change in the peripheral force to be transmitted to the belt run for drive thereof.
REFERENCES:
patent: 2413339 (1946-12-01), Stadelman
patent: 3153475 (1964-10-01), Swanson
patent: 4875568 (1989-10-01), Hermann et al .
patent: 4887708 (1989-12-01), Brown et al.
patent: 5332082 (1994-07-01), Sommerfield
Axmann-Fordertechnik GmbH
Bidwell James R.
Fogiel Max
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