Patents by Inventor Tetuo Nomoto

Tetuo Nomoto 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).

  • Pre-loaded actuator using piezoelectric element
    Patent number: 5205147
    Abstract: Pre-loaded piezoelectric actuators provide improved work piece displacement, frequency of repetition, accuracy and repeatability. Actuators may use a coil spring providing a compressive force adequate to substantially fully compress a laminated piezoelectric element on a non-destructive basis. Upon activation, a pre-loaded actuator delivers a full workpiece drive stroke because piezoelectric element axial compression has previously occurred. Pre-loading methods and pre-loading to damp out element oscillation are also disclosed.
    Type: Grant
    Filed: July 30, 1991
    Date of Patent: April 27, 1993
    Assignee: Fuji Electric Co., Ltd.
    Inventors: Tatuya Wada, Hiroshi Hikita, Nobutaka Machida, Mituharu Nonami, Yukinori Kawamura, Norikatu Matumoto, Yoshiyuki Ohmura, Tetuo Nomoto
  • Press and actuator using piezoelectric element
    Patent number: 5095725
    Abstract: A press is described using piezoelectric actuators to achieve both the hold down of the work piece during the processing operation as well as powering the die used in deforming the work piece. The sub-assembly containing the piezoelectric element is structured to allow convenient removal from the main body of the press thereby facilitating repair operations, as well as coarse and fine adjusting facilities for the position of the piezoelectric element within the actuator assembly.
    Type: Grant
    Filed: May 11, 1990
    Date of Patent: March 17, 1992
    Assignee: Fuji Electric Co., Ltd.
    Inventors: Tatuya Wada, Hiroshi Hikita, Nobutaka Machida, Mituharu Nonami, Yukinori Kawamura, Norikatu Matumoto, Yoshiyuki Ohmura, Tetuo Nomoto