Patents Examined by Eugene L. Szczecine, Jr.
  • Electromagnetic screw channel pump for liquid metals with internally disposed polyphase coils
    Patent number: 4775298
    Abstract: Electromagnetic screw channel pump having a helical delivery channel, including polyphase coils for generating a magnetic field travelling in circumferential direction of the delivery channel and a magnetic flux return structure, the polyphase coils being arranged in a cylindrical inner portion, and the magnetic flux return structure being arranged outside of the helical delivery channel.
    Type: Grant
    Filed: August 8, 1986
    Date of Patent: October 4, 1988
    Assignee: Interatom GmbH
    Inventors: Theodor Lauhoff, Joachim Barzantny