Carriage for driving handrails of walkways and moving stairs

Details Carriage for driving handrails of walkways and moving stairs Carriage for driving handrails of walkways and moving stairs

2007-12-27

2009-10-13

Deuble, Mark A (Department: 3651)

Conveyors: power-driven

Conveyor or accessory therefor specialized to convey people

By support means having a zone of varying speed

C198S331000, C198S335000

Reexamination Certificate

active

07600628

ABSTRACT:
The invention relates to a carriage for driving handrails of walkways and moving stairs, comprising a body (6) in the form of a vertical plate in which leading rollers (7) are assembled; two swinging locking pawls (12-13) for locking with a drive chain; a free turning wheel (24) intended to be supported against a cam profile in order to cause the pawls (12-13) to swing between an operative vertical position and an inoperative horizontal position; and an arm (8) intended to engage with the variable pitch screws.

REFERENCES:
patent: 935631 (1909-10-01), Adkins
patent: 3842961 (1974-10-01), Bruson
patent: 4240537 (1980-12-01), Dunstan
patent: 4509429 (1985-04-01), De Broqueville
patent: 6675949 (2004-01-01), Gonzalez Alemany et al.
patent: 7063203 (2006-06-01), Gonzalez Alemany et al.
patent: 2005/0217970 (2005-10-01), Gonzalez Alemany et al.
patent: 1 582 494 (2005-10-01), None
patent: 2 272 118 (2007-04-01), None
patent: 2003321185 (2003-11-01), None

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