Patents by Inventor Kawakami Fukushi

Kawakami Fukushi 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).

  • Method for measuring sound absorption power of a theater chair with a human being seated thereon and a dummy sound absorber
    Patent number: 6526840
    Abstract: There is provided a method for measuring a sound absorption power of a theater chair with a human being seated thereon. The method includes steps of disposing a theater chair which is an object of measurement in a measuring environment; disposing a dummy sound absorber in the theater chair, the dummy sound absorber having a shape in which it is in contact with the theater chair, a sound absorption power and a chair pressing force in such a manner that the dummy sound absorber simulates a human being seated on the theater chair; causing changes in the theater chair which changes are substantially equivalent to a change in the state of the theater chair caused when a human being gets seated on the chair and a change in the sound absorption power of the theater chair caused by seating of the human being thereon; and measuring the sound absorption power of the theater chair. There is also provided a dummy sound absorber used for carrying out this method.
    Type: Grant
    Filed: July 2, 1999
    Date of Patent: March 4, 2003
    Assignee: Yamaha Corporation
    Inventors: Takeshi Sakai, Kawakami Fukushi
  • Dummy sound absorber representing a seated human for measuring sound absorption power of a theater chair
    Patent number: 6463817
    Abstract: There is provied a method for measuring a sound therefor power of a theater chair with a human being seated thereon. The method includes steps of disposing a theater chair which is an object of measurement in a measuring environment; disposing a dummy sound absorber in the theater chair, the dummy sound absorber having a shape in which it is in contact with the theater chair, a sound absorption power and a chair pressing force in such a manner that the dummy sound absorber simulates a human being seated on the theater chair; causing changes in the theater chair which changes are substantially equivalent to a change in the state of the theater chair caused when a human being gets seated on the chair and a change in the sound absorption power of the theater chair caused by seating of the human being thereon; and measuring the sound absorption power of the theater chair. There is also provided a dummy sound absorber used for carrying out this method.
    Type: Grant
    Filed: July 29, 1997
    Date of Patent: October 15, 2002
    Assignee: Yamaha Corporation
    Inventors: Takeshi Sakai, Kawakami Fukushi
  • Dummy sound absorber representing a seated human for measuring sound absorption power of a theater chair
    Patent number: 6105443
    Abstract: There is provided a method for measuring a sound absorption power of a theater chair with a human being seated thereon. The method includes steps of disposing a theater chair which is an object of measurement in a measuring environment; disposing a dummy sound absorber in the theater chair, the dummy sound absorber having a shape in which it is in contact with the theater chair, a sound absorption power and a chair pressing force in such a manner that the dummy sound absorber simulates a human being seated on the theater chair; causing changes in the theater chair which changes are substantially equivalent to a change in the state of the theater chair caused when a human being gets seated on the chair and a change in the sound absorption power of the theater chair caused by seating of the human being thereon; and measuring the sound absorption power of the theater chair. There is also provided a dummy sound absorber used for carrying out this method.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: August 22, 2000
    Assignee: Yamaha Corporation
    Inventors: Takeshi Sakai, Kawakami Fukushi
  • Method for measuring sound absorption power of a theater chair with a dummy representing a human being seated thereon
    Patent number: 5465469
    Abstract: There is provided a method for measuring a sound absorption power of a theater chair with a human being seated thereon. The method includes steps of disposing a theater chair which is an object of measurement in a measuring environment; disposing a dummy sound absorber in the theater chair, the dummy sound absorber having a shape in which it is in contact with the theater chair, a sound absorption power and a chair pressing force in such a manner that the dummy sound absorber simulates a human being seated on the theater chair; causing changes in the theater chair which changes are substantially equivalent to a change in the state of the theater chair caused when a human being gets seated on the chair and a change in the sound absorption power of the theater chair caused by seating of the human being thereon; and measuring the sound absorption power of the theater chair. There is also provided a dummy sound absorber used for carrying out this method.
    Type: Grant
    Filed: September 30, 1993
    Date of Patent: November 14, 1995
    Assignee: Yamaha Corporation
    Inventors: Takeshi Sakai, Kawakami Fukushi