Escalator step chain roller

Details Escalator step chain roller Escalator step chain roller

1991-03-13

1992-08-11

Olszewski, Robert P.

Conveyors: power-driven

Conveyor or accessory therefor specialized to convey people

By stairway having steps forming an endless member

198326, B66B 2312

Patent

active

051371359

ABSTRACT:
The step chain rollers for an escalator or moving walkway are provided with an annular elastomeric tread mounted on the rim of the roller. The roller rim is formed with a recess or groove which receives the tread. The main body of the roller is metal, and the side edges of the roller contact a side part of the escalator roller track as the roller moves along the track. Lateral guidance for the step chain is thus provided. By recessing the tread in the roller rim, an increase in the metal-to-metal side contact zone between the roller and track is provided resulting in longer roller lift. The sides of the tread are preferably offset from the sides of the roller recess to allow crack-free expansion of the tread to occur.

REFERENCES:
patent: 2905308 (1959-09-01), Hansen
patent: 4175652 (1979-11-01), Satou et al.
patent: 4249649 (1981-02-01), Kraft

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