Conveyors: power-driven – Conveyor or accessory therefor specialized to convey people – With means to control the operation of the section
Patent
1991-02-20
1992-02-25
Valenza, Joseph E.
Conveyors: power-driven
Conveyor or accessory therefor specialized to convey people
With means to control the operation of the section
198331, B66B 900
Patent
active
050905511
ABSTRACT:
A conveyer for transporting people includes a transmitting mechanism for transmitting the drive force of a treadboard driving section for moving treadboards to a drive mechanism of a handrail driving section for moving handrails. The transmitting mechanism includes a transmission shaft on which first and second junction sprockets are fixed, a first drive chain stretched between the treadboard driving section and the first junction sprocket, and a second drive chain stretched between the second junction sprocket and the drive mechanism. A detecting device is arranged to detect a twist of the transmission shaft attributable to the difference between loads acting on the first and second junction sprockets. The device detects a change in the moving sped of the handrail in accordance with the detected twist of the shaft.
REFERENCES:
patent: 1984801 (1934-12-01), Lindquist et al.
patent: 4664247 (1987-05-01), Wolf et al.
Saitou Toshio
Yasuhara Yoshihito
Kabushiki Kaisha Toshiba
Valenza Joseph E.
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