Patents by Inventor Tsunemi Sakai

Tsunemi Sakai 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).

  • Optical pickup carrying system
    Patent number: 5831962
    Abstract: An optical pickup carrying system includes a base on which a turn table can be disposed rotatably for placing a disk thereon, an optical pickup movably disposed in the base for reading a signal recorded on the disk, a guide rail disposed in the base and provided with sliding surfaces on which a level positioning member secured to the optical pickup and a plate spring can slide, respectively, for guiding and supporting the optical pickup in cooperation with the level positioning member and plate spring when the optical pickup moves, and a groove formed in the sliding surface for storing grease.
    Type: Grant
    Filed: January 3, 1997
    Date of Patent: November 3, 1998
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Tsunemi Sakai, Shigehiro Itou, Naohiko Obata