Conveyors: power-driven – Conveyor or accessory therefor specialized to convey people – With means to control the operation of the section
Patent
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.
Adrian Willy
Moldenhauer Detlev B.
Dayoan D. Glenn
Jones William W.
Otis Elevator Company
Spar Robert J.
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