Patents by Inventor Tohru Numaguchi

Tohru Numaguchi 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).

  • Patent number: 4789132
    Abstract: A valve including rotor means of which position is rotatably fixed within tubular flowpassage means; rotating magnetic field generating means fixedly positioned around said rotor means; first screw means which are rotated coaxially with the rotor means together with the latter; second screw means which engage the first screw means and are movable in an axial direction of the screw without being rotated for itself by the rotation of the first screw means; valve body means connected to the second screw means; and valve seat means in engagement with the valve body means, whereby the rotor means are rotated by the action of the rotating magnetic field generated by the rotating magnetic field generating means, said rotation causes the second screw means to be moved in an axial direction of the screw, and said movement is transmitted to the valve body to adjust a degree of opening and closing of the valve.
    Type: Grant
    Filed: August 7, 1987
    Date of Patent: December 6, 1988
    Assignee: Toyo Engineering Corporation
    Inventors: Yuichi Fujita, Takayuki Kaneko, Mitsuo Okada, Kazumi Shima, Hideaki Yanaru, Tohru Numaguchi
  • Patent number: RE33782
    Abstract: A valve including rotor means of which position is rotatably fixed within tubular flowpassage means; rotating magnetic field generating means fixedly positioned around said rotor means; first screw means which are rotated coaxially with the rotor means together with the latter; second screw means which engage the first screw means and are movable in an axial direction of the screw without being rotated for itself by the rotation of the first screw means; valve body means connected to the second screw means; and valve seat means in engagement with the valve body means, whereby the rotor means are rotated by the action of the rotating magnetic field generated by the rotating magnetic field generating means, said rotation causes the second screw means to be moved in an axial direction of the screw, and said movement is transmitted to the valve body to adjust a degree of opening and closing of the valve.
    Type: Grant
    Filed: April 23, 1990
    Date of Patent: December 31, 1991
    Assignee: Toyo Engineering Corporation
    Inventors: Yuichi Fujita, Takayuki Kaneko, Mitsuo Okada, Kazumi Shima, Hideaki Yanaru, Tohru Numaguchi