Conveyer apparatus having footsteps

Conveyors: power-driven – Conveyor or accessory therefor specialized to convey people – By stairway having steps forming an endless member

Reexamination Certificate

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C198S326000, C198S334000

Reexamination Certificate

active

07401691

ABSTRACT:
A mountainous or valley-shaped curved part13is provided in a part of a footstep guide rail3for guiding a movement of footstep rollers5linked by a footstep chain7, the part being positioned in the vicinity of a drive sprocket9. Consequently, owing to meshing of the footstep rollers5with the drive sprocket9, an unevenness in velocity of the footstep rollers5is absorbed by the curved part13, so that a moving velocity of the footstep rollers5moving on the downstream of the curved part13is maintained constantly, suppressing vibrating of the footsteps4.

REFERENCES:
patent: 2686585 (1954-08-01), Margles et al.
patent: 4498890 (1985-02-01), Sutherland
patent: 5697486 (1997-12-01), Krampl
patent: 2007/0007106 (2007-01-01), Ishikawa et al.
patent: 199 58 709 (2001-06-01), None
patent: 1-34915 (1989-07-01), None
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patent: 08-217368 (1996-08-01), None
patent: 9-202583 (1997-08-01), None
patent: 2000-177965 (2000-06-01), None
patent: 2001-226063 (2001-08-01), None
patent: 2002-114472 (2002-04-01), None
U.S. Appl. No. 11/816,540, filed Aug. 17, 2007, Kikuchi et al.

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