Conveyors: power-driven – Conveyor or accessory therefor specialized to convey people – By stairway having steps forming an endless member
Patent
1992-06-15
1993-07-06
Dayoan, D. Glenn
Conveyors: power-driven
Conveyor or accessory therefor specialized to convey people
By stairway having steps forming an endless member
B66B 2302
Patent
active
052245802
ABSTRACT:
A power transmission system is provided for use in a platform drive mechanism of a passenger conveyor which has a conveyor frame and a plurality of laterally extending passenger platforms which are movably supported for driven movement about an endless path on the frame and engaged with a pair of circuitous drive chains disposed on opposite sides of the conveyor frame The transmission system has a multiple stage reduction gear drive positioned outboard of the passenger platforms and directly coupled between the drive chains and a motor for driving the passenger platforms in response to energization of the motor. A sprocket assembly has a drive shaft which extends laterally across the conveyor frame and mounts a pair of axially spaced sprockets. One of the sprockets is coupled between one axial end of the drive shaft and the gear drive output stage and engages one of the drive chains, and the other of the sprockets engages the second one of the drive chains and is coupled between a second axial end of the drive shaft and a support shaft journaled on the conveyor frame.
REFERENCES:
patent: 1956714 (1934-05-01), Graff-Baker
patent: 3696909 (1972-10-01), Kojima et al.
patent: 4775044 (1988-10-01), Hofling
patent: 5125494 (1992-06-01), Nurnberg et al.
Nurnberg Thomas R.
Seggebruch Ernie
Dayoan D. Glenn
Montgomery Elevator Company
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