Tread element for moving pavement or escalator

Details Tread element for moving pavement or escalator Tread element for moving pavement or escalator

1991-03-27

1992-09-29

Olszewski, Robert P.

Conveyors: power-driven

Conveyor or accessory therefor specialized to convey people

By stairway having steps forming an endless member

B66B 2312

Patent

active

051507803

ABSTRACT:
In order to provide a secure connection which can be produced in a simple manner by the pressure die casting method between edge strips (3) inserted in the step plate (2) of a step element and the step plate (2), the edge strips (3) have on their underside at least along their two longitudinal edges a respective tongue (6, 7). The cross sections of the latter two have the shape of a parallelogram with mutual identical angles or of a trapezoid and engage in corresponding grooves (8, 9) in the step plate (2) in the manner of a tongue-and-groove connection. Furthermore, these edge strips (3) are provided on their underside moreover with at least two cast-on locking pins (10) which extend downwards and through the adjacent step plate (2), and on whose free ends projecting downwards out of the step plate (2) a respective clamping ring (11) is clamped resiliently supported on the underside of thhe step plate 2.

REFERENCES:
patent: 4570781 (1986-02-01), Kappenhagen
patent: 4638901 (1987-01-01), Lunardi
patent: 4858745 (1989-08-01), Haas et al.
patent: 4984672 (1991-01-01), Saito et al.

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