Patents by Inventor John A. Bone

John A. Bone 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: 4392392
    Abstract: An electrically operated roller door driving mechanism for operating a roller door comprising a reversible electrical motor fixedly mounted to one of the roller door supporting drum wheels and housed within the core of the roller door curtain, the motor and drum wheel being arranged to rotate simultaneously, and a ring gear operatively associated with said motor via a reduction gear mechanism, the ring gear being capable of being held stationary with respect to the rotating drum wheel but also being capable of rotating in unison with the drum wheel to thereby enable the roller door to be manually opened and closed in the event of a motor malfunction or power failure.
    Type: Grant
    Filed: November 4, 1980
    Date of Patent: July 12, 1983
    Assignee: Automatic Rollers Doors Australia Pty., Ltd.
    Inventors: Milan Perisic, Warwick J. Lumbers, John A. Bone