Conveyors: power-driven – Conveyor or accessory therefor specialized to convey people – With means to facilitate passenger entry or exit
Patent
1990-03-29
1992-11-24
Valenza, Joseph E.
Conveyors: power-driven
Conveyor or accessory therefor specialized to convey people
With means to facilitate passenger entry or exit
198328, 198335, B66B 2100
Patent
active
051655136
ABSTRACT:
A circulating circular escalator has a vertically-oriented rotatable cylinder extending between upper and lower floors. An annular stairway having a plurality of steps is disposed about the rotatable cylinder. An annular cam member is disposed around the rotatable cylinder for camming and guiding the steps to move along the stairway, and a landing board extends over each of the upper and lower horizontal runs of the stairway. The stairway includes a lower horizontal run at a lower floor level, an upper horizontal run at an upper floor level, and ascending and descending sloped runs connected between the lower and upper runs. The sloped runs may be used for conveying passengers, or either one of the runs may be used as a return run. The inner sides of the steps are attached to the rotatable cylinder for rotation therewith, the steps each being independently vertically slidable relative to the rotatable cylinder. The steps are supported and guided by vertical guide rails on the rotatable cylinder and guide rollers on the steps for smooth translational movement. The load-bearing run may be made longer and therefore less steep than the return run. At least one intermediate horizontal run with a landing board may be disposed at an intermediate level between the upper and lower horizontal runs for serving an additional intermediate floor.
REFERENCES:
patent: 935631 (1909-10-01), Adkins et al.
patent: 967710 (1910-08-01), Bennett
patent: 4411352 (1983-10-01), Kettle
patent: 4662502 (1987-05-01), Nakatani
patent: 4681206 (1987-07-01), Sugita
patent: 4726460 (1988-02-01), Otomo
patent: 4730717 (1988-03-01), Sugita
patent: 4746000 (1988-05-01), Nakatani et al.
patent: 4775043 (1988-10-01), Tomidokoro
patent: 4809840 (1989-05-01), Nakatani
Mitsubishi Denki & Kabushiki Kaisha
Valenza Joseph E.
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