Escalator

Details Escalator Escalator

1975-06-20

1976-10-19

Blunk, Evon C.

Conveyors: power-driven

Conveyor or accessory therefor specialized to convey people

By stairway having steps forming an endless member

104 25, B66B 912

Patent

active

039865959

ABSTRACT:
The disclosed safety devices are disposed at either of the edges of each stair of an escalator. Each device includes a sensor dovetailed to a bracket for the individual stair treads and risers to abut against and be horizontally aligned with a displacement element screwed to the bracket. The sensor of each device projects beyond a corresponding riser. If a passenger's calf or the like contacts the sensor, the latter retrogrades to displace the abutting end portion of the displacement element toward the adjacent skirt plate of the escalator to narrow a space formed between the displacement element and the skirt plate. The sensor may be disposed in a vertically aligned, abutting relationship upon the displacement element to somewhat project beyond the cleats on a tread.

REFERENCES:
patent: 2080980 (1937-05-01), Fiedler
patent: 2210711 (1940-08-01), Dunlop
patent: 2813613 (1957-11-01), Marcles

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