Conveyors: power-driven – Conveyor or accessory therefor specialized to convey people – By stairway having steps forming an endless member
Patent
1995-06-21
1996-06-04
Dayoan, D. Glenn
Conveyors: power-driven
Conveyor or accessory therefor specialized to convey people
By stairway having steps forming an endless member
198335, B66B 2304
Patent
active
055224920
ABSTRACT:
The present invention comprises an improved escalator handrail drive system. The system is a drive wheel with an uphill and downhill side, an escalator handrail wrapped around a portion of the drive wheel, and two pressure rollers. One pressure roller is positioned adjacent to the downhill side of the drive wheel and forms a first nip therebetween and the other pressure roller is positioned adjacent to the uphill side of the drive wheel and forms a second nip therebetween. The escalator handrail is driven by the drive wheel with the assistance of the uphill pressure roller and the downhill pressure roller applying pressure to the handrail as it passes through each of the first and second nips so as to ensure sufficient contact area between the drive wheel and the handrail. There are also at least two guide rollers with at least one positioned adjacent to the downhill side of the drive wheel and at least one positioned adjacent to the uphill side of the drive wheel. The guide rollers provide for a smooth transition for the handrail as it travel around the drive wheel.
REFERENCES:
patent: 3049213 (1962-08-01), Fabula
patent: 3321060 (1967-05-01), Mullis et al.
patent: 3666075 (1972-05-01), Iwata
patent: 4134883 (1979-01-01), Mendelsohn et al.
patent: 4535880 (1985-08-01), Boltrek
patent: 4580675 (1986-04-01), Boltrek
patent: 4589539 (1986-05-01), Boltrek
patent: 5072820 (1991-12-01), Steffen et al.
patent: 5125494 (1992-06-01), Nurnberg et al.
patent: 5427221 (1995-06-01), Spriggs et al.
Report from U.S. Dept. of Transportation entitled "Overview of Escalator Applications in Rail Transit", dated Jul. 1, 1980.
S. W. Escalator Service Manual, Prepared by Schindler Haughton Elevator Corporation, Jan. 1982.
S. W. E. Escalator Installation and Adjustment Manual, Prepared by Schindler Corporation, Jan. 1991.
Evans James F.
Spriggs John P.
Dayoan D. Glenn
Home Elevators
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