Patents by Inventor Rolf Kleemann

Rolf Kleemann 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).

  • Laboratory centrifuge with electric motor
    Patent number: 5971908
    Abstract: A laboratory centrifuge has a centrifuge rotor supported on a stator and rotatable on a bearing about an axis of rotation. An electric motor drives the rotor and has pole pieces at a stationary part mounted on the stator and a rotatable part directly attached to the rotor, the stationary part having pole pieces with drive coils. The pole pieces magnetically act through a gap between the pole pieces and the rotatable part, and the gap lies in a surface which is perpendicular to the axis of rotation or forms a shallow frustocone opening either upwardly or downwardly.
    Type: Grant
    Filed: March 23, 1998
    Date of Patent: October 26, 1999
    Assignee: Eppendorf-Netheler-Hinz GmbH
    Inventors: Joachim Scheuber, Juergen Koeppel, Jochen Beese, Rolf Kleemann