Patents by Inventor Roland K. Eusemann

Roland K. Eusemann 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).

  • Rotary or linear electric motor whose armature is driven by means of ultrasonic vibrations
    Patent number: 4884002
    Abstract: Armature (4) is driven by piezo-electric vibration elements (1) which are made to resonate by means of high-frequency electrical oscillations in order to produce ultrasonic vibrations which are transmitted to a plurality of drive pins (2) arranged as brushes a friction surface (6) of the armature (4) is pressed against free ends (5) a of the pins, the individual drive pins bein disposed at an angle .alpha. relative to the perpendicular to the contact portion of the friction surface (6). The angle of inclination .alpha. is then substantially equal to the static-friction angle or is slightly larger than this static-friction angle between the drive pins and the friction surface. Suitably, the angle of inclination is selected to be between 10.degree. and 30.degree..
    Type: Grant
    Filed: October 19, 1988
    Date of Patent: November 28, 1989
    Assignee: U.S. Philips Corporation
    Inventors: Roland K. Eusemann, Heinrich A. Oepen, Anton Hammers