Patents by Inventor Mashanori Kohchi

Mashanori Kohchi 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).

  • Mechanism for balancing a rotary magnetic head apparatus
    Patent number: 5051852
    Abstract: A rotary magnetic head apparatus for use in a VTR and producing a low level of vibration by restraining the unbalance of an overall rotary body of the magnetic head apparatus. The apparatus includes a fixed cylinder for supporting a rotary shaft via bearings, a rotary cylinder secured to one end of the rotary shaft and having magnetic heads, and a motor rotor directly coupled with the other end of the rotary shaft. At least one first balancer and at least one second balancer are respectively provided in the rotary cylinder and the rotor so as to compensate for the unbalance of the rotary body composed of the rotary cylinder, the rotary shaft, and the rotor.
    Type: Grant
    Filed: April 27, 1989
    Date of Patent: September 24, 1991
    Assignee: Hitachi, Ltd.
    Inventors: Takashi Kohno, Osami Matsushita, Takao Terayama, Mashanori Kohchi, Hideo Tomizawa, Kouji Satoh, Hiroyuki Ono