Patents by Inventor Walther Sinn

Walther Sinn 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).

  • Electrically driven coolant pump for an internal combustion engine
    Patent number: 5785013
    Abstract: A pump-motor unit for pumping a coolant for cooling an internal combustion engine in which a centrifugal pump is connected to an electrically commutated d.c. motor to be driven thereby. A power electronic circuit is mounted on a plate and installed in the unit in connection with the d.c. motor to operate the motor in accordance with signals delivered to said power electronic circuit from an external power source. A cooling body is supported in the unit to cool the power electronic circuit by transferring heat from the power electronic circuit to the coolant. The centrifugal pump and the d.c. motor are interconnected through the cooling body.
    Type: Grant
    Filed: December 5, 1996
    Date of Patent: July 28, 1998
    Assignee: Pierburg AG
    Inventors: Walther Sinn, Frank Langner, Wolfgang Weller, Wolfgang Zacher, Jens Teubel, Ronald Rathke