Patents by Inventor Shiu M. Tak

Shiu M. Tak 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).

  • Brush assemblies for electric motors or generators
    Patent number: 4297605
    Abstract: A brush assembly for a motor or generator includes a brush, a holder, a spring for using the brush out of the holder, and a restraining washer between the spring and brush. The restraining washer prevents the spring from coming into contact with the commutator of a motor or generator when the brush has worn away.
    Type: Grant
    Filed: January 22, 1980
    Date of Patent: October 27, 1981
    Assignee: Wah Ming Electrics Limited
    Inventor: Shiu M. Tak