Patents by Inventor Sung W. Ro

Sung W. Ro 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).

  • Coolant pump with clutch
    Patent number: 5076216
    Abstract: A coolant pump for a vehicle engine, which comprises an electromagnetic member connected to a belt pulley which is selectively connected to a water pump impeller, such that the pump impeller is rotated at a certain predetermined engine temperature of about 85.degree. C. by activation of the electromagnetic member, and is not rotated below the predetermined engine temperature due to nonactivation of the electromagnetic member.
    Type: Grant
    Filed: September 19, 1990
    Date of Patent: December 31, 1991
    Inventor: Sung W. Ro