Patents by Inventor Keizi Wakatsuki

Keizi Wakatsuki 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: 5130959
    Abstract: A front loading disk player comprising a play unit which is arranged inside the player housing and includes a turntable, a pickup, and a disk clamp mechanism, a disk holding unit for holding disks to be inserted through an insertion opening formed in the player, and a play unit transfer mechanism for moving the play unit to load it into the disk. The play unit transfer mechanism comprises a movable carrying member, arranged so as to be movable in parallel with the recording surface of the disk, for carrying the play unit; and a carrying member drive unit for moving the movable carrying member. As a result of this construction, the front loading disk player is not only extremely small in structure but also capable of containing and playing a plurality of disks properly and smoothly.
    Type: Grant
    Filed: September 20, 1990
    Date of Patent: July 14, 1992
    Assignee: Pioneer Electronic Corporation
    Inventors: Keizi Wakatsuki, Akira Shimizu, Tutomu Ogawa, Tomomichi Kimura