Patents by Inventor Jan C. W. Dragt

Jan C. W. 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: 4129930
    Abstract: A method of manufacturing an electrically controllable pivoting mirror device for an optical video-disc player, which pivoting mirror device comprises a frame as well as a mirror which with the aid of a plastics bearing with a height of less than 3 mm is fixed to a bearing support. The elastic bearing is first manufactued as a finished part and it is not until after this that it is connected to the pivoting mirror and, as the case may be, to the bearing support. In accordance with a suitable embodiment of the method the bearing is manufactured from chloroprene rubber with the aid of a molding process and is connected to the bearing support during the molding process.
    Type: Grant
    Filed: January 25, 1977
    Date of Patent: December 19, 1978
    Assignee: U.S. Philips Corporation
    Inventor: Jan C. W. Dragt
  • Patent number: 4123146
    Abstract: An electrically controllable pivoting mirror arrangement comprises a pivoting mirror which is mounted on a frame with the aid of a mirror support and which carries permanent magnetic means at its back for producing a permanent magnetic field for electrical control purposes. Between the pivoting mirror and the permanent magnetic means a mounting plate is located which comprises means for positioning the pivoting mirror and the permanent magnetic means. The mounting plate may also serve for clamping a mirror bearing which is made of rubber-like material or for positioning the mirror bearing when this is glued onto the back of the pivoting mirror.
    Type: Grant
    Filed: April 13, 1977
    Date of Patent: October 31, 1978
    Assignee: U.S. Philips Corporation
    Inventor: Jan C. W. Dragt