Upper rail for passenger conveyor

Details Upper rail for passenger conveyor Upper rail for passenger conveyor

1997-10-22

2000-01-25

Bidwell, James R.

Conveyors: power-driven

Conveyor or accessory therefor specialized to convey people

By stairway having steps forming an endless member

B65G 2312

Patent

active

060169028

ABSTRACT:
A passenger conveyor provided with a drive motor, a drive sprocket coupled to a shaft of the drive motor, a drive terminal gear coaxially engaged to the drive sprocket, a step chain driven by meshing with the drive terminal gear, a step connected to the step chain and having front and rear wheel rollers, and an upper rail for guiding the front wheel roller so that the step chain meshes smoothly with the drive terminal gear, wherein the upper rail comprising a straight section formed in a straight; an arched section formed extendly from an end of the straight section, wherein the starting end of the arched section coincides with or goes beyond a perpendicular center: line of the terminal gear; a distance from an upper surface of the straight section to a circumferencial surface of the terminal gear is shorter than a radius of the front wheel roller.

REFERENCES:
patent: 2128310 (1938-08-01), Margles
patent: 2570135 (1951-10-01), Loughridge
patent: 2617515 (1952-11-01), Hohnecker

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