Patents by Inventor Yoshio Saeki

Yoshio Saeki 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).

  • Disc cartridge with slidably mounted shutter
    Patent number: 6721266
    Abstract: A disc cartridge includes a first half, a second half, and a shutter member. The second half is connected to the first half. The second half is formed with a first aperture facing an optical head and a second aperture via which a disc rotational driving device is introduced. The shutter member is slidably mounted on the second half and has a first plate portion, at least one second plate portion and a connecting portion. The first plate portion opens or closes the first aperture and contacts the outer surface of the second half. At least one second plate portion extends parallel to the first plate portion for engaging with the inner surface of the second half. The connecting portion interconnects the first and second plate portions to complete the cross-sectional shape of a letter U of the shutter member. The length of the second plate portion is less than the length of the first plate portion.
    Type: Grant
    Filed: October 29, 1996
    Date of Patent: April 13, 2004
    Assignee: Sony Corporation
    Inventors: Shinkichi Kobayashi, Yoshio Saeki