Patents by Inventor Jan Cornelis Willem Dragt

Jan Cornelis Willem Dragt 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: 4021096
    Abstract: An electrodynamically controllable pivoting mirror device for an apparatus for optically reading an information carrier with the aid of a beam of radiation, in particular for a video-disc player which utilizes optical reading, the mirror device being provided with a frame on which a mirror, which is mounted with the aid of an elastic plastic, is pivotably disposed, which mirror is pivotable by means of electrodynamic control means consisting of electromagnets and/or control coils.
    Type: Grant
    Filed: January 29, 1976
    Date of Patent: May 3, 1977
    Assignee: U.S. Philips Corporation
    Inventor: Jan Cornelis Willem Dragt
  • Patent number: 4011003
    Abstract: An electromagnetically controllable pivoting device for pivoting a reflecting surface of a pivoting mirror about pivotal axes parallel to said surface with the aid of electrical control signals, more particularly intended for a video disc player in which a light beam is produced by means of a light source, which beam is aimed at an information track of a rotating optically readable video disc by means of the reflecting surface of the pivoting mirror. The mirror is supported by a bellows body of an elastically deformable plastic, which bellows body is provided with at least one rotation-symmetrical fold which is concentric with the optical center of the reflecting surface.
    Type: Grant
    Filed: January 26, 1976
    Date of Patent: March 8, 1977
    Assignee: U.S. Philips Corporation
    Inventor: Jan Cornelis Willem Dragt