Patents Examined by Alfred Basilhas
  • Miniaturized direct current fan
    Patent number: 5135363
    Abstract: An axial flow fan for ventilating electrical and electronic equipment includes a brushless, DC external rotor-type central drive motor. The stator is supported by a bearing tube formed of plastic, integrally molded with a mounting flange. In one embodiment, the fan casing forms part of the integral plastic molding.
    Type: Grant
    Filed: July 2, 1991
    Date of Patent: August 4, 1992
    Assignee: Papst-Motoren GmbH & Co. KG
    Inventors: Siegfried Harmsen, Rolf Muller, Gunter Wrobel