Patents by Inventor Kouhei Yamatoh

Kouhei Yamatoh 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).

  • Brake device
    Patent number: 4860859
    Abstract: A brake device comprising an ultrasonic motor having a rotor rotatable by an elastic traveling wave generated by a piezoelectric vibrator on a stator of the motor, and torque converting means for converting a rotating torque produced by said ultrasonic motor into a pressing force for pressing a friction member against a member to be braked, which pressing force is transmitted to said friction member.
    Type: Grant
    Filed: April 18, 1988
    Date of Patent: August 29, 1989
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Kouhei Yamatoh, Masami Ogura
  • Piezoelectric brake device
    Patent number: 4854424
    Abstract: A brake device for producing a braking force by pressing a friction member against a member to be braked in response to a deformation produced by applying a DC voltage to a piezoelectric element array including a stack of piezoelectric elements. A plurality of piezoelectic element arrays are coupled by a displacement transmission mechanism such that deformations produced by the piezoelectric element arrays are added together.
    Type: Grant
    Filed: April 18, 1988
    Date of Patent: August 8, 1989
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Kouhei Yamatoh, Masami Ogura, Katunori Kanbe, Yuji Isogai