Conveyors: power-driven – Conveyor or accessory therefor specialized to convey people – By stairway having steps forming an endless member
Reexamination Certificate
2007-05-14
2010-12-21
Bidwell, James R (Department: 3651)
Conveyors: power-driven
Conveyor or accessory therefor specialized to convey people
By stairway having steps forming an endless member
C198S327000
Reexamination Certificate
active
07854311
ABSTRACT:
An escalator or travelator comprising a circulating step belt or panel belt. Each step or panel of a belt is provided on each side respectively with a supporting roller and a chain roller, which are guided on supporting roller rails and chain roller rails in forward travel and in return travel. Supporting roller return travel rails are adapted to support the supporting roller only partially.
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patent: WO2005/035422 (2005-04-01), None
Ludwig Reiner
Neerhut Frank
Tilkorn Michael
van der Werf Gerben
Willnauer Hartmuth
Becker Robert
Bidwell James R
Robert Becker & Assoc.
ThyssenKrupp Fahrtreppen GmbH
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