Patents by Inventor Machiel J. De Jager

Machiel J. De Jager 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).

  • Electric machine having magnetic bearing means
    Patent number: 4755709
    Abstract: An electric machine comprises a stator 7 and a rotor 17 mounted on a rotor shaft 15. In order to preclude axial vibrations of the rotor shaft the machine is provided with a first magnet 19a incorporated in a thrust block 19 and a second magnet 23 on the rotor shaft. The first and second magnetic means cooperate with each other to urge a bearing portion 15a of the rotor shaft against a bearing surface 19b of the thrust bearing with a predetermined pressure.
    Type: Grant
    Filed: July 11, 1986
    Date of Patent: July 5, 1988
    Assignee: U.S. Philips Corporation
    Inventor: Machiel J. De Jager