Steps in an escalator

Details Steps in an escalator Steps in an escalator

1981-12-23

1984-11-20

Valenza, Joseph E.

Conveyors: power-driven

Conveyor or accessory therefor specialized to convey people

By stairway having steps forming an endless member

198853, B65B 912

Patent

active

044834322

ABSTRACT:
An escalator step having a tread and a convex riser, the riser being provided on its convex surface with a number of alternating first and second grooves which are shallow and deep respectively. The tread is provided on the surface with a number of first and second alternating cleats corresponding to the first and second grooves of the riser, the ends of the first and second cleats projecting from the side opposite to the riser a short and a long distance, respectively, corresponding to the depths of the first and second grooves of the riser. The end of the tread at the side adjacent the riser is constituted by recesses conforming to the first and second grooves of the riser.

REFERENCES:
patent: 2723020 (1955-11-01), Margles et al.
patent: 2981397 (1961-04-01), Hansen
patent: 3735851 (1973-05-01), Patin
patent: 4295556 (1981-10-01), Saito et al.

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