Escalator or moving walkway

Details Escalator or moving walkway Escalator or moving walkway

2005-10-18

2005-10-18

Crawford, Gene O. (Department: 3651)

Conveyors: power-driven

Conveyor or accessory therefor specialized to convey people

By stairway having steps forming an endless member

C198S321000

Reexamination Certificate

active

06955254

ABSTRACT:
For reduction in externally excited oscillations there is provided at an escalator or a moving walkway an oscillation damper which is connected with the escalator or the moving walkway within a self-supporting region, preferably at the point of greatest oscillation displacement. The oscillation damper is preferably a speed-proportional plate damper comprising plates which move relative to one another in viscous oil.

REFERENCES:
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patent: 6129198 (2000-10-01), Nusime
patent: 6374981 (2002-04-01), Gschwendtner et al.
patent: 6527098 (2003-03-01), Krampl
patent: 6637580 (2003-10-01), Sneed
patent: 963941 (1999-12-01), None
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patent: 04092040 (1992-03-01), None
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patent: 11322243 (1999-11-01), None
Patent Abstracts of Japan, “Passenger Conveyor Device”, Pub. No. 11314873, Nov. 16, 1999.
Patent Abstracts of Japan, “Supporting Device For Passenger Conveyor”, Pub. No. 11310376, Nov. 9, 1999.
R. C. Hibbeler, “Engineering Mechanics Dyanmics : 2d Ed”, Macmillan Publishing Co., 1978, pp 547-553.
C. W. de Silva, “Vibration Fundamentals and Practice” CRC Press, 2000, pp 787-805.

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