Patents Represented by Attorney William J. Jones

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  • Self adjustable handrail drive with separate drive chains
    Patent number: 5062520
    Abstract: The handrail drive has opposed rollers which are movable toward and away from each other due to their eccentric mountings. Two sets of such opposed rollers are used to drive the handrail. Each set of rollers is equipped with its own drive chain to increase the efficiency of each set of drive rollers with ultra high loads. The drive is particularly suited for moving high load escalator and moving walkway handrails.
    Type: Grant
    Filed: July 11, 1990
    Date of Patent: November 5, 1991
    Assignee: Otis Elevator Company
    Inventors: Dat Nguyen, Frank Sansevero, Gerald E. Johnson, James A. Rivera