Conveyors: power-driven – Conveyor or accessory therefor specialized to convey people – By stairway having steps forming an endless member
Patent
1989-03-27
1989-11-28
Spar, Robert J.
Conveyors: power-driven
Conveyor or accessory therefor specialized to convey people
By stairway having steps forming an endless member
198778, 198831, B66B 2102
Patent
active
048831603
ABSTRACT:
An escalator is provided with a curved path of travel from its entry to its exit landings. The path of travel of the escalator steps as seen in plan is a curve having a fixed center and a constant radius from landing to landing. In elevation, each landing portion will be disposed in vertically spaced horizontal planes, and there will be a medial constant slope ascending or descending portion. Interconnecting each landing portion with the constant slope portion will be entry and exit transitional curved portions of varying slope as seen in the elevational view. To enable the steps to traverse the curved path successfully, the effective length of the outer of the step chains is varied at different points along the path of travel of the escalator.
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Borchers Peter
Nguyen Dat
Rivera James A.
Sansevero Frank M.
Seehausen Klaus
Dayoan D. Glenn
Jones William W.
Otis Elevator Company
Spar Robert J.
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