Escalator handrail obstruction device with sensors

Details Escalator handrail obstruction device with sensors Escalator handrail obstruction device with sensors

1989-09-29

1990-05-15

Spar, Robert J.

Conveyors: power-driven

Conveyor or accessory therefor specialized to convey people

With means to control the operation of the section

198338, B66B 2904

Patent

active

049249959

ABSTRACT:
An elastomeric collar is positioned at the mouth of the escalator handrail reentry housing. The collar will deform when subjected to forces running parallel to the direction of travel of the handrail. Sufficient deformation of the collar will activate a switch which turns the escalator off. If an object enters the reentry housing and becomes lodged therein against the handrail, the forces generated thereby normal to the direction of travel of the handrail will activate a pressure sensor which in turn will turn the escalator off.

REFERENCES:
patent: 2846045 (1958-08-01), Fowler
patent: 3809206 (1974-05-01), Bredehorn et al.
patent: 3835977 (1974-09-01), Hewitt et al.
patent: 3934699 (1976-01-01), Saito et al.
patent: 4619355 (1986-10-01), Adrian et al.

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