Patents by Inventor Ronald Hendrik Vuillemin (Muller)

Ronald Hendrik Vuillemin (Muller) 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).

  • Patent number: 6114788
    Abstract: A motor/active magnetic bearing combination includes two stator base plates made of magnetic material. A plurality of sets of north and south poles, numbering at least three are formed on each of the stators, and each set comprises one or two south poles and a north pole or vice versa. Appropriate energization of the coils surrounding each of these poles both suspends and creates a magnetic field which imposes a constant speed rotation on the rotor which is suspended between the stators. The rotation is achieved by virtue of the fact that the rotor includes a circumferential set of slots defining regions around the circumference which interact with the energized poles on the stator so that a reluctance motor is formed, driving the rotor in rotation.
    Type: Grant
    Filed: December 10, 1997
    Date of Patent: September 5, 2000
    Assignee: Seagate Technology L.L.C.
    Inventors: Ronald Hendrik Vuillemin (Muller), Hiroshi Toshiyoshi, Hannes Bleuler