Patents by Inventor Hansj{umlaut over (u)}rgen Kech

Hansj{umlaut over (u)}rgen Kech 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).

  • Tube pump
    Patent number: 6175173
    Abstract: A centrifugal pump has a housing with intake and discharge fittings at axially opposite ends. The electronic motor is supported on ribs within the pump housing and the motor casing is closed by the electronic control circuit for the motor which seals the motor against the pump liquid. The coolant thus flows around the electric motor and its control circuit.
    Type: Grant
    Filed: September 14, 1999
    Date of Patent: January 16, 2001
    Assignee: Wilo GmbH
    Inventors: Waldemar Stephan, Hansj{umlaut over (u)}rgen Kech, Albert Genster