Patents by Inventor Kumi Koyama

Kumi Koyama 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 chucking device and disk recording and/or reproducing apparatus
    Patent number: 6952834
    Abstract: A disc chucking device is provided which holds a disc-shaped recording medium on a disc table and rotates it along with the disc table. It includes a disc table whose rotation-center line is laid generally orthogonally to the vertical direction and onto which a disc-shaped recording medium is set with the main side thereof being parallel to the vertical direction, a centering block formed on the disc table and which is to be fitted in a central hole in the disc-shaped recording medium, a motor to rotate the disc table, a clamper to pinch along with the disc table the disc-shaped recording medium put on the disc table, and a fall-off preventive structure provided on the disc table for engagement with the disc-shaped recording medium at the central hole formed in the latter.
    Type: Grant
    Filed: December 17, 2001
    Date of Patent: October 4, 2005
    Assignee: Sony Corporation
    Inventors: Akihisa Inatani, Kumi Koyama, Hajime Mizuno
  • Disc chucking device and disk recording and/or reproducing apparatus
    Publication number: 20030123376
    Abstract: A disc chucking device is provided which holds a disc-shaped recording medium on a disc table and rotates it along with the disc table. It includes a disc table whose rotation-center line is laid generally orthogonally to the vertical direction and onto which a disc-shaped recording medium is set with the main side thereof being parallel to the vertical direction, a centering block formed on the disc table and which is to be fitted in a central hole in the disc-shaped recording medium, a motor to rotate the disc table, a damper to pinch along with the disc table the disc-shaped recording medium put on the disc table, and a fall-off preventive means provided on the disc table for engagement with the disc-shaped recording medium at the central hole formed in the latter.
    Type: Application
    Filed: November 29, 2002
    Publication date: July 3, 2003
    Inventors: Akihisa Inatani, Kumi Koyama, Hajime Mizuno
  • Disk clamper, recording and/or playback apparatus and method for loading inserted recording medium
    Publication number: 20030053402
    Abstract: Disclosed is a disk clamper for cooperating with a disk table to chuck a disk-type recording medium, comprising: a support section disposed in an opposing relationship to the disk table; and a stabilizer supported on the support section for movement toward and away from the disk table; wherein, when the disk-type recording medium is chucked, the stabilizer is attracted to the disk table with the disk-type recording medium interposed therebetween, but when the disk-type recording medium is not chucked, the stabilizer is attracted to the support section. Accordingly, chucking operation in an assured manner can be realized.
    Type: Application
    Filed: November 1, 2002
    Publication date: March 20, 2003
    Applicant: Sony Corporation
    Inventors: Akihisa Inatani, Kumi Koyama, Takayuki Kaneko, Harutoshi Yoshimura, Kenji Kawakami, Akiomi Suzuki, Masako Sudo, Yutaka Sato, Shigeru Saegusa, Sakae Washikawa