Patents by Inventor Tsunehiko Shibata

Tsunehiko Shibata 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).

  • Piezoelectric air valve and multiple-type piezoelectric air valve
    Patent number: 7360750
    Abstract: The air valve includes a valve body for controlling operations to open and close the communication between an air pressure chamber and an air outlet, a piezoelectric element for generating driving force in the form of displacements, and a displacement enlarging mechanism for enlarging the small displacements generated by the piezoelectric element by the principle of a pry and applying the enlarged displacements to the valve body. The enlarged displacements cause a large and sufficient gap to be developed between the air pressure chamber and the air outlet when a voltage is applied to the piezoelectric element. When the applying of voltage to the piezoelectric element is stopped, the resetting force of the piezoelectric element itself causes the gap to be closed quickly.
    Type: Grant
    Filed: April 9, 2004
    Date of Patent: April 22, 2008
    Assignee: Satake Corporation
    Inventors: Takeshi Yano, Toshiro Higuchi, Kenichi Kudoh, Sze Keat Chee, Tsunehiko Shibata, Norimasa Ikeda
  • Piezoelectric air valve and multiple-type piezoelectric air valve
    Publication number: 20040206409
    Abstract: The air valve includes a valve body for controlling operations to open and close the communication between an air pressure chamber and an air outlet, a piezoelectric element for generating driving force in the form of displacements, and a displacement enlarging mechanism for enlarging the small displacements generated by the piezoelectric element by the principle of a pry and applying the enlarged displacements to the valve body. The enlarged displacements cause a large and sufficient gap to be developed between the air pressure chamber and the air outlet when a voltage is applied to the piezoelectric element. When the applying of voltage to the piezoelectric element is stopped, the resetting force of the piezoelectric element itself causes the gap to be closed quickly.
    Type: Application
    Filed: April 9, 2004
    Publication date: October 21, 2004
    Inventors: Takeshi Yano, Toshiro Higuchi, Kenichi Kudoh, Sze Keat Chee, Tsunehiko Shibata, Norimasa Ikeda