Patents by Inventor Hidehiko Tamaoki

Hidehiko Tamaoki 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).

  • Dropping model electrostatic levitation furnace
    Patent number: 7864829
    Abstract: A dropping model electrostatic levitation furnace which puts a charged sample in levitation state by an electric field generated between electrodes and subjects the sample to heat treatment, in which a drop tube evacuatable in vacuum is connected vertically at the lower side of a furnace body to allow the sample to drop through the drop tube with a beam irradiating optical system having a heating laser beam. This brings experimental results which the influence of an electric field and gravity is eliminated sufficiently by means of a furnace having comparatively simple constitution, and also enables to reduce the cost drastically with high experimental environment.
    Type: Grant
    Filed: March 31, 2004
    Date of Patent: January 4, 2011
    Assignees: Air Trick Inc., IHI Aerospace Co., Ltd
    Inventors: Hiroaki Asahi, Hidehiko Tamaoki
  • Dropping model electrostatic levitation furnace
    Publication number: 20070274368
    Abstract: A dropping model electrostatic levitation furnace which puts a charged sample in levitation state by an electric field generated between electrodes and subjects the sample to heat treatment, in which a drop tube evacuatable in vacuum is connected vertically at the lower side of a furnace body to allow the sample to drop through the drop tube with a beam irradiating optical system having a heating laser beam. This brings experimental results which the influence of an electric field and gravity is eliminated sufficiently by means of a furnace having comparatively simple constitution, and also enables to reduce the cost drastically with high experimental environment.
    Type: Application
    Filed: March 31, 2004
    Publication date: November 29, 2007
    Inventors: Hiroaki Asahi, Hidehiko Tamaoki
  • Actuator and system for controlling vibration of structure
    Patent number: 5107634
    Abstract: A vibration control system for a structure comprises an actuator connected in a truss structure as a structural member, for varying an axial stiffness in response to a control signal, at least one vibration sensor for producing a sensor signal representing a vibratory motion of the structure, and a controller for controlling vibrations of the structure by producing the control signal in accordance with the sensor signal. Preferably, the actuator comprises inner and outer tubes axially movable relative to each other, and a piezoelectric element which can change the axial stiffness of the actuator by allowing and preventing the relative movement between the inner and outer tubes.
    Type: Grant
    Filed: June 12, 1990
    Date of Patent: April 28, 1992
    Assignees: Junjiro Onoda, Nissan Motor Company, Ltd.
    Inventors: Junjiro Onoda, Takao Endo, Hidehiko Tamaoki