Patents by Inventor Momosuke NAKAHARA

Momosuke NAKAHARA 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).

  • Keyswitch device and keyboard
    Patent number: 11862415
    Abstract: A keyswitch device which is provided with a support mechanism which supports a keytop in a movable manner, and a membrane sheet which has a plurality of upper electrodes and a plurality of lower electrodes which respectively correspond to the plurality of the upper electrodes and which form contact pairs with the corresponding upper electrodes. A plurality of contact pairs are arranged for a single keytop. The rubber cup pushes the plurality of contact pairs which are arranged for the single keytop.
    Type: Grant
    Filed: July 24, 2020
    Date of Patent: January 2, 2024
    Assignee: FUJITSU COMPONENT LIMITED
    Inventors: Hiromi Ohtsuka, Daisuke Taga, Takuya Saitou, Momosuke Nakahara
  • KEYSWITCH DEVICE AND KEYBOARD
    Publication number: 20200357581
    Abstract: A keyswitch device which is provided with a support mechanism which supports a keytop in a movable manner, and a membrane sheet which has a plurality of upper electrodes and a plurality of lower electrodes which respectively correspond to the plurality of the upper electrodes and which form contact pairs with the corresponding upper electrodes. A plurality of contact pairs are arranged for a single keytop. The rubber cup pushes the plurality of contact pairs which are arranged for the single keytop.
    Type: Application
    Filed: July 24, 2020
    Publication date: November 12, 2020
    Applicant: FUJITSU COMPONENT LIMITED
    Inventors: Hiromi OHTSUKA, Daisuke TAGA, Takuya SAITOU, Momosuke NAKAHARA
  • Keyswitch device and keyboard
    Patent number: 10763054
    Abstract: A keyswitch device which is provided with a support mechanism which supports a keytop in a movable manner, and a membrane sheet which has a plurality of upper electrodes and a plurality of lower electrodes which respectively correspond to the plurality of the upper electrodes and which form contact pairs with the corresponding upper electrodes. A plurality of contact pairs are arranged for a single keytop. The rubber cup pushes the plurality of contact pairs which are arranged for the single keytop.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: September 1, 2020
    Assignee: FUJITSU COMPONENT LIMITED
    Inventors: Hiromi Ohtsuka, Daisuke Taga, Takuya Saitou, Momosuke Nakahara
  • Key switch and keyboard
    Patent number: 10446343
    Abstract: A key switch includes a movable part configured to be moved by a pressing operation, a support mechanism that movably supports the movable part, an electrical connector including multiple pairs of contacts of upper electrodes and lower electrodes, and a disc spring that is disposed between the movable part and the electrical connector and configured to be elastically deformed by movement of the movable part and to press the electrical connector. The multiple pairs of contacts are provided for one movable part. When the disc spring is deformed by the movement of the movable part, the disc spring is configured to simultaneously press the multiple pairs of contacts provided for the corresponding movable part.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: October 15, 2019
    Assignee: FUJITSU COMPONENT LIMITED
    Inventors: Daisuke Taga, Momosuke Nakahara
  • KEY SWITCH AND KEYBOARD
    Publication number: 20180190448
    Abstract: A key switch includes a movable part configured to be moved by a pressing operation, a support mechanism that movably supports the movable part, an electrical connector including multiple pairs of contacts of upper electrodes and lower electrodes, and a disc spring that is disposed between the movable part and the electrical connector and configured to be elastically deformed by movement of the movable part and to press the electrical connector. The multiple pairs of contacts are provided for one movable part. When the disc spring is deformed by the movement of the movable part, the disc spring is configured to simultaneously press the multiple pairs of contacts provided for the corresponding movable part.
    Type: Application
    Filed: June 9, 2016
    Publication date: July 5, 2018
    Inventors: Daisuke TAGA, Momosuke NAKAHARA
  • KEYSWITCH DEVICE AND KEYBOARD
    Publication number: 20140339065
    Abstract: A keyswitch device which is provided with a support mechanism which supports a keytop in a movable manner, and a membrane sheet which has a plurality of upper electrodes and a plurality of lower electrodes which respectively correspond to the plurality of the upper electrodes and which form contact pairs with the corresponding upper electrodes. A plurality of contact pairs are arranged for a single keytop. The rubber cup pushes the plurality of contact pairs which are arranged for the single keytop.
    Type: Application
    Filed: April 29, 2014
    Publication date: November 20, 2014
    Applicant: Fujitsu Component Limited
    Inventors: Hiromi OHTSUKA, Daisuke TAGA, Takuya SAITOU, Momosuke NAKAHARA