Escalator wheel monitor

Conveyors: power-driven – Conveyor or accessory therefor specialized to convey people – With means to control the operation of the section

Reexamination Certificate

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Details

C198S810030

Reexamination Certificate

active

11065414

ABSTRACT:
The present invention teaches a mechanical device that monitors the support wheels, or rollers, of a moving escalator stair step. The diameter of each support wheel is indirectly measured by determining the height of each support wheel axial above a given plane. Support wheels that have unacceptable diameter trip an activation mechanism that sends an electrical signal to stop the escalator's driving motor.

REFERENCES:
patent: 5096040 (1992-03-01), Wente et al.
patent: 5236075 (1993-08-01), Bartmann
patent: 5361887 (1994-11-01), Zaharia et al.
patent: 5819902 (1998-10-01), Schoneweiss et al.
patent: 53140788 (1978-12-01), None

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