Patents by Inventor Keith Worsley

Keith Worsley has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5131504
    Abstract: A car door seal, comprising a brush, is utilized to seal the openings between a closed car door and an elevator car and to minimize backlash between the car doors and the car. By utilizing a brush, such uneven openings are effectively sealed because the brushes bend for narrower openings between the car door and the car. The brush also provides an effective damping and spring force between the door and the car. As a result, door rattle, caused by backlash and aerodynamically induced vibration loads during car travel, is minimized thereby minimizing vibration and noise within the interior of the car.
    Type: Grant
    Filed: March 21, 1991
    Date of Patent: July 21, 1992
    Assignee: Otis Elevator Company
    Inventors: Young S. Yoo, John K. Salmon, Keith Worsley