Conveyors: power-driven – Conveyor or accessory therefor specialized to convey people – With means to control the operation of the section
Patent
1991-06-13
1992-03-03
Olszewski, Robert P.
Conveyors: power-driven
Conveyor or accessory therefor specialized to convey people
With means to control the operation of the section
198331, 1985024, B65G 1500
Patent
active
050924460
ABSTRACT:
A handrail monitoring system for use in a passenger conveyor such as an escalator, moving sidewalk or the like, compares the speed of each handrail against their nominal installed speed and responds when the handrail speeds differ from nominal by a selected percentage, i.e., when the difference in speed is 5, 10, 15 or 20%, as selected by an operator. Handrail speed is compared with the nominal handrail speed which may be established over a continuous range of speeds depending upon the installation. The system outputs either an immediate audio and/or visual alarm upon excessive slowing of a handrail or a delayed audio and/or visual alarm following a selected time interval to allow for temporary, short interruptions in handrail transport not due to conveyor system malfunction, but rather frequently due to passenger interference with the handrail. Provision is also made for automatically stopping the escalator upon detection of a handrail fault as well as recording the number of such faults in monitoring handrail operation.
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Mitchell Bradley A.
Sullivan, Jr. Kenneth J.
ECS Corporation
Gastineau Cheryl L.
Olszewski Robert P.
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