Patents by Inventor Koichi Saigo

Koichi Saigo 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).

  • Pedal apparatus of electronic musical instrument
    Patent number: 8541672
    Abstract: A lever is supported by a lever supporting portion. The lever is urged by a first spring and a second spring. The urging force of the first spring varies over the entire operational range of the lever. The second spring and a third spring are provided serially through a movable supporting member. The displacement of the movable supporting member is restricted by a fixed supporting member. If the urging force of the second spring exceeds the urging force of the third spring, the restriction on the displacement of the movable supporting member is removed. Therefore, the present configuration provides a player with feeling similar to that the player perceives when he manipulates a damper pedal of an acoustic piano.
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: September 24, 2013
    Assignee: Yamaha Corporation
    Inventors: Toshiyuki Iwamoto, Mitsuru Kitajima, Shigeru Muramatsu, Koichi Saigo
  • PEDAL APPARATUS OF ELECTRONIC MUSICAL INSTRUMENT
    Publication number: 20110138987
    Abstract: A lever is supported by a lever supporting portion. The lever is urged by a first spring and a second spring. The urging force of the first spring varies over the entire operational range of the lever. The second spring and a third spring are provided serially through a movable supporting member. The displacement of the movable supporting member is restricted by a fixed supporting member. If the urging force of the second spring exceeds the urging force of the third spring, the restriction on the displacement of the movable supporting member is removed. Therefore, the present configuration provides a player with feeling similar to that the player perceives when he manipulates a damper pedal of an acoustic piano.
    Type: Application
    Filed: February 25, 2011
    Publication date: June 16, 2011
    Applicant: YAMAHA CORPORATION
    Inventors: Toshiyuki IWAMOTO, Mitsuru KITAJIMA, Shigeru MURAMATSU, Koichi SAIGO
  • Pedal apparatus of electronic musical instrument
    Patent number: 7956261
    Abstract: A lever 40 is supported by a lever supporting portion 41. The lever 40 is urged by a first spring 45 and a second spring 46. The urging force of the first spring 45 varies over the entire operational range of the lever 40. The second spring 46 and a third spring 47 are provided serially through a movable supporting member 48. The displacement of the movable supporting member 48 is restricted by a fixed supporting member FR. If the urging force of the second spring 46 exceeds the urging force of the third spring 47, the restriction on the displacement of the movable supporting member 48 is removed. Therefore, the present invention provides a player with feeling similar to that the player perceives when he manipulates a damper pedal of an acoustic piano.
    Type: Grant
    Filed: March 23, 2009
    Date of Patent: June 7, 2011
    Assignee: Yamaha Corporation
    Inventors: Toshiyuki Iwamoto, Mitsuru Kitajima, Shigeru Muramatsu, Koichi Saigo
  • PEDAL APPARATUS OF ELECTRONIC MUSICAL INSTRUMENT
    Publication number: 20090235803
    Abstract: A lever 40 is supported by a lever supporting portion 41. The lever 40 is urged by a first spring 45 and a second spring 46. The urging force of the first spring 45 varies over the entire operational range of the lever 40. The second spring 46 and a third spring 47 are provided serially through a movable supporting member 48. The displacement of the movable supporting member 48 is restricted by a fixed supporting member FR. If the urging force of the second spring 46 exceeds the urging force of the third spring 47, the restriction on the displacement of the movable supporting member 48 is removed. Therefore, the present invention provides a player with feeling similar to that the player perceives when he manipulates a damper pedal of an acoustic piano.
    Type: Application
    Filed: March 23, 2009
    Publication date: September 24, 2009
    Applicant: YAMAHA CORPORATION
    Inventors: Toshiyuki IWAMOTO, Mitsuru KITAJIMA, Shigeru MURAMATSU, Koichi SAIGO