Conveyors: power-driven – Conveyor or accessory therefor specialized to convey people – Moving hand-support structure
Patent
1996-02-29
1997-06-17
Dayoan, D. Glenn
Conveyors: power-driven
Conveyor or accessory therefor specialized to convey people
Moving hand-support structure
B66B 2324
Patent
active
056389370
ABSTRACT:
In a factory prefabricated drive system conversion unit for the handrail of an existing escalator, the drive system conversion unit includes a channel member adapted to be fixedly connected to an existing escalator structure, with a rotatable friction wheel being mounted between the channels and driven via a chain drive, having a plurality of pressing rollers, and a lever-operated tensioning device, with a set of cluster rollers, having a plurality of rollers, being mounted on a cluster roller base plate arranged on each side of the friction wheel, and also including a handrail turn around with a clamped roller chain having a plurality of both roller and chain links, as well as end pieces and intermediate guide members. Directionless cluster roller bases as well as directionless channels can also be utilized to simplify and speed up the conversion operation.
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General Elevator submission, including one-page letter dated Mar. 13, 1991, one-page Proposal and Acceptance dated Mar. 13, 1991, including one-page Attachment A and one-page drawing of escalator.
General Elevator submission, including two-page letter dated Aug. 11, 1992, one-page Attachement A and one-page drawing of escalator entitled "Design Concept for New Handrail Drive DWG": Marta - 1992.
Schindler Elevator Corporation Technical Services Bulletin, dated Oct. 1, 1987, including drawing of escalator entitled "Location of Handrail Roller Drive Assembly".
Schindler Elevator Corporation document entitled "Retrofit Handrail Tension Device, HA-990-C7, Replacement for Pressure Type Belt" dated May 1987.
Millar Elevator Service Co. one-page sketch entitled "HR. conversion Drive for Mod B", dated Jul. 31, 1992.
"Overview of Escalator Applications in Rail Transit", U.S. Department of Transportation, Jul. 1, 1980.
Photograph of handrail drive conversion unit being marketed by the firm John P. Spriggs, Home Elevators Inc., Roswell, George, U.S.A. (No Date).
Birney Lawrence V.
Jodry Dean L.
Keller Thomas A.
Stewart Richard A.
Thompson William I.
Dayoan D. Glenn
Inventio AG
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