Curved escalator

Details Curved escalator Curved escalator

1985-12-16

1988-05-24

Valenza, Joseph E.

Conveyors: power-driven

Conveyor or accessory therefor specialized to convey people

By stairway having steps forming an endless member

198333, B66B 2102

Patent

active

047460008

ABSTRACT:
A curved escalator includes guide tracks for defining a stairway path which includes a constant slope intermediate section, horizontal landing sections, and transient sections smoothly connecting the intermediate section and the landing sections. Each section of differing slope has a differing radius of curvature which when viewed in plan, is inversely proportional to the slope angle, thereby eliminating the need for drive chains to change the distance between the step axles. Turn-around mechanisms that are compact and simple in structure are also disclosed.

REFERENCES:
patent: 617779 (1899-01-01), Seeberger
patent: 727720 (1903-05-01), Venn
patent: 889080 (1908-05-01), Wheeler
patent: 999885 (1911-08-01), Seeberger
patent: 1804701 (1931-05-01), Mojonnier
patent: 2135188 (1938-11-01), Lindquist
patent: 2641351 (1953-06-01), Riley
patent: 2695094 (1954-11-01), Riley
patent: 2823785 (1958-02-01), Hefti
patent: 3520398 (1970-07-01), Thomson
patent: 3878931 (1975-04-01), Luna

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