Roller guide with speed dependent stiffness

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United States of America Patent

PATENT NO 9193565
APP PUB NO 20090294222A1
SERIAL NO

12298787

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A guide device (26) for use in an elevator system includes an elevator guide roller (30) having a hardness that varies depending on a speed of rotation of the guide roller (30). In a disclosed example, a magnetorheological fluid within the guide roller (30) changes viscosity depending on the speed of rotation. One example includes varying an influence of a first magnetic field on the magnetorheological fluid to change the viscosity.

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Patent Owner(s)

  • OTIS ELEVATOR COMPANY;IP UNITY PEACH, INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Piech, Zbigniew Wolcott, US 78 560

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