Curvilinear escalator

Conveyors: power-driven – Conveyor or accessory therefor specialized to convey people – By stairway having steps forming an endless member

Patent

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Details

198852, B66B 2106, B65G 1742

Patent

active

046812067

ABSTRACT:
A curvilinear escalator comprises, in combination: a main frame having an arcuate shape in the horizontal plane of projection and disposed in inclined condition, the main frame having a forwarding way formed on the top surface side thereof, a turning section at one distal end part of the main frame in the longitudinal direction thereof, and a return way on the bottom surface side thereof to thereby construct an endless conveying path; a plurality of steps continuously disposed in the conveying path and guided therealong, each of the steps being in a sector shape; a pair of step chains disposed at both sides of the steps on the edge part in the breadthwise direction thereof and provided along the conveying path, the each step chain being constructed with joint pieces, each of which is engaged with the end part of a step shaft disposed in each of the steps in the breadthwise direction thereof, and link members with one end part thereof being connected with one end part of the joint piece and to bring the adjacent pieces into mutually connected state; and a spherical joint interposed between the step shaft and the link member.

REFERENCES:
patent: 617779 (1899-01-01), Seeberger
patent: 727720 (1903-05-01), Venn
patent: 984858 (1911-02-01), Seeberger
patent: 1130555 (1915-03-01), Wheeler
patent: 2319617 (1943-05-01), Manierre
patent: 2600174 (1952-06-01), Sheehan
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patent: 2823785 (1958-02-01), Hefti
patent: 3515253 (1970-06-01), Yamada
patent: 3878931 (1975-04-01), Luna
patent: 4071054 (1978-01-01), Santucci et al.
patent: 4399909 (1983-08-01), Gorelik

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