Patents by Inventor Kazutoshi Tonozuka

Kazutoshi Tonozuka 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).

  • Electronic apparatus
    Patent number: 6747877
    Abstract: A storage room for storing an attachment unit is provided with a plate for sheltering electrified portions inside the storage room from outside while the attachment unit is not stored in the storage room. A hook is also provided to maintain a state where the plate shelters the electrified portions. While the attachment unit is not stored in the storage room the hook protrudes into the storage room and is positioned at an area over the plate. When an external force is applied to the plate, the hook prevents the plate from being fallen down by the external force by hooking the plate thereon.
    Type: Grant
    Filed: December 19, 2002
    Date of Patent: June 8, 2004
    Assignee: NEC Corporation
    Inventor: Kazutoshi Tonozuka
  • Electronic apparatus
    Publication number: 20030111939
    Abstract: A storage room for storing an attachment unit is provided with a plate for sheltering electrified portions inside the storage room from outside while the attachment unit is not stored in the storage room. A hook is also provided to maintain a state where the plate shelters the electrified portions. While the attachment unit is not stored in the storage room the hook protrudes into the storage room and is positioned at an area over the plate. When an external force is applied to the plate, the hook prevents the plate from being fallen down by the external force by hooking the plate thereon.
    Type: Application
    Filed: December 19, 2002
    Publication date: June 19, 2003
    Applicant: NEC CORPORATION
    Inventor: Kazutoshi Tonozuka
  • Mechanism for preventing electronic unit from being pulled out from housing under condition that electronic unit is connected with plug
    Patent number: 6439917
    Abstract: An electronic unit having an electric connecting part connectable with a plug is accommodated in a housing of an electronic equipment so that the electronic unit can be attached to and detached from the housing. An engaging arm is rotatably mounted on one face of the electronic unit on which the electric connecting part is provided. When a plug is connected to the electric connecting part of the electronic unit, one end of the engaging arm is engaged with the engaging portion of the housing, whereby the electronic unit can be prevented from being pulled out from the housing. When the plug is detached from the electric connecting part of the electronic unit, the engaging portion of the engaging arm can be disengaged from the housing by the rotation of the engaging arm. Therefore, if the plug is detached from the electric connecting part of the electronic unit, the electronic unit can be pulled out from the housing.
    Type: Grant
    Filed: December 6, 2000
    Date of Patent: August 27, 2002
    Assignee: NEC Corporation
    Inventor: Kazutoshi Tonozuka
  • Mechanism for preventing electronic unit from being pulled out from housing under condition that electronic unit is connected with plug
    Publication number: 20010003684
    Abstract: An electronic unit having an electric connecting part connectable with a plug is accommodated in a housing of an electronic equipment so that the electronic unit can be attached to and detached from the housing. An engaging arm is rotatably mounted on one face of the electronic unit on which the electric connecting part is provided. When a plug is connected to the electric connecting part of the electronic unit, one end of the engaging arm is engaged with the engaging portion of the housing, whereby the electronic unit can be prevented from being pulled out from the housing. When the plug is detached from the electric connecting part of the electronic unit, the engaging portion of the engaging arm can be disengaged from the housing by the rotation of the engaging arm. Therefore, if the plug is detached from the electric connecting part of the electronic unit, the electronic unit can be pulled out from the housing.
    Type: Application
    Filed: December 6, 2000
    Publication date: June 14, 2001
    Inventor: Kazutoshi Tonozuka
  • Storage apparatus for a computer
    Patent number: D447746
    Type: Grant
    Filed: March 28, 2000
    Date of Patent: September 11, 2001
    Assignee: NEC Corporation
    Inventors: Kazutoshi Tonozuka, Misa Iwamoto, Kouichi Harada, Kim Seokjin
  • Memory control equipment for computers
    Patent number: D495699
    Type: Grant
    Filed: April 2, 2003
    Date of Patent: September 7, 2004
    Assignee: NEC Corporation
    Inventors: Norihiro Oura, Kazutoshi Tonozuka, Misa Iwamoto, Shunji Ishida, Manabu Tominaga
  • Magnetic tape storage unit for an electronic computer
    Patent number: D344723
    Type: Grant
    Filed: May 7, 1992
    Date of Patent: March 1, 1994
    Assignee: NEC Corporation
    Inventors: Kazutoshi Tonozuka, Masahiro Honda, Kimio Nobeashi