Patents by Inventor Hidenori Obata

Hidenori Obata 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).

  • Flexitensional transducer having a strain compensator
    Patent number: 5768216
    Abstract: In a flextensinal transducer a drive stack provided inside the oval shell has a strain compensator that has a cylinder and piston. The cylinder is provided in the oval shell, and the piston is stiffly attached to the end of the drive stack. Inside the cylinder, the piston can move along the major axis of the oval shell. When the flextensional transducer is sunk into the water, the oval shell is distorted to extend along the major axis. Then the cylinder and the piston moves relatively to each other to compensate for the distortion.
    Type: Grant
    Filed: June 26, 1996
    Date of Patent: June 16, 1998
    Assignee: Oki Electric Industry Co., Ltd.
    Inventors: Hidenori Obata, Tomohiro Tsuboi, Takashi Yoshikawa, Akiyoshi Kawamori