Patents by Inventor John L. Ying

John L. Ying 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).

  • Low profile rubber tracked snow vehicle with snow-clearing drive wheels
    Patent number: 5899541
    Abstract: A snow and ice-clearing track assembly (16) for a vehicle (10) is provided which has a plurality of rotatable track wheels (22-26) including a specialized drive wheel (24) together with a continuous loop, substantially imperforate track (34) disposed about and engaging the wheels (22-26). The track (34) includes a plurality of inwardly extending drive lugs (36) which are received within circumferentially spaced lug openings (56) and snow and ice-clearing passages (58, 60) on opposite sides of the central openings (60). An alternate drive wheel (70) has a pair of polyurethane rings (84, 86) on opposite sides of lug-receiving openings (78) preventing buildup of ice and snow adjacent the drive wheel.
    Type: Grant
    Filed: February 10, 1997
    Date of Patent: May 4, 1999
    Assignee: Central Power Products, Inc.
    Inventors: John L. Ying, Jack L. Highfill