Drive system with step chain or pallet chain for a...

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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Details

C198S838000, C198S841000

Reexamination Certificate

active

07665595

ABSTRACT:
A transportation system for a transportation device has a transportation chain having a plurality of chain links joined to form an articulated endless chain and with a sprocket to reverse the chain. The transportation chain has several equally-spaced guide elements which, in a transportation area of the transportation device are guided along a guide rail. The guide elements are formed of sliding elements that are mechanically linked to the transportation chain and slide along the guide rail when the transportation system is in motion. An outer circumference of the sprocket has recesses which at least partly accommodate the sliding elements.

REFERENCES:
patent: 3052133 (1962-09-01), Bradley
patent: 3155227 (1964-11-01), Wesson
patent: 4082173 (1978-04-01), Simon-Kochloffel
patent: 4917233 (1990-04-01), Tsuda et al.
patent: 5957268 (1999-09-01), Meulenkamp
patent: 6834754 (2004-12-01), Pietz
patent: 6988608 (2006-01-01), Pietz
patent: 7159705 (2007-01-01), Ogimura et al.
patent: 25 16 151 (1976-10-01), None
patent: 298 17 293 (1998-11-01), None
patent: 62105807 (1987-05-01), None
patent: WO 96/33931 (1996-10-01), None
patent: WO 02/49951 (2002-06-01), None

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