Patents by Inventor Maurice E. Swisher

Maurice E. Swisher 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).

  • Worm gear assembly for a medical mobility apparatus permitting manual reverse mobility
    Patent number: 6029763
    Abstract: A worm gear assembly for a medical mobility apparatus, such as a motorized wheelchair or scooter, comprises a worm and a worm gear. The worm is operatively coupled to a motor shaft of a drive motor of the medical mobility apparatus. The worm gear, which is disposed on an intermediate shaft, is adapted for being driven by the worm and is adapted for driving a drive wheel of the medical mobility apparatus. The worm gear and the worm have a gear ratio of less than 10:1 and the worm has a lead angle in the range of about 20-30.degree.. This arrangement permits the worm gear to selectively drive the worm and permits manual reverse mobility of the medical mobility apparatus.
    Type: Grant
    Filed: August 27, 1997
    Date of Patent: February 29, 2000
    Assignee: Reliance Electric Industrial Company
    Inventor: Maurice E. Swisher