Roller assembly for a passenger conveyor step chain

Details Roller assembly for a passenger conveyor step chain Roller assembly for a passenger conveyor step chain

1995-12-19

1998-09-15

Valenza, Joseph E.

Conveyors: power-driven

Conveyor or accessory therefor specialized to convey people

By stairway having steps forming an endless member

198500, 198845, 384461, 384474, B66B 2102

Patent

active

058066535

ABSTRACT:
A roller assembly for a passenger conveyor step chain includes a rolling contact bearing disposed between a bushing and an axle of the roller assembly. The rolling contact bearing improves wear resistance and load carrying capabilities of the roller assembly and step chain. In a particular embodiment, the roller assembly includes a pair of seals and a lubrication chamber. The seals define a sealed region encompassing the rolling contact bearing and lubrication chamber. The seals prevent lubrication from leaking and debris from penetrating into the sealed region.

REFERENCES:
patent: 4101180 (1978-07-01), Anderson et al.
patent: 4602407 (1986-07-01), Gresens
patent: 5072824 (1991-12-01), Rontgen
patent: 5137135 (1992-08-01), Pietsch et al.
patent: 5293982 (1994-03-01), Ahls et al.
patent: 5301773 (1994-04-01), Jamieson et al.
patent: 5468376 (1995-11-01), Bates
"Unlubricated Escalator Chain Bushes Reduce Maintenance and Fire Risk" by Clive Corbould and Sandy Polak, May 95/Elevator World, pp. 80 & 82.

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