Patents by Inventor Minoru Shonai

Minoru Shonai 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).

  • Transducer head base for multiple size drums
    Patent number: 5251084
    Abstract: A head base which can be used with either of two different types of drums having a regular diameter and a smaller diameter. The head base comprises a single base plate having a transverse hole perforated therein in such a manner as to define a front portion, a rear portion and a pair of connecting portions which connect the front and rear portions to each other such that the front portion and the rear portion are capable of being separated from each other at the connecting portions. When the head base is to be used with a drum of a regular diameter of a rotary drum apparatus, it is used as it is. But when it is to be used with a drum of a smaller diameter, it is cut or broken at the connecting portions thereof to separate the front portion from the rear portion, and only the front portion is used as a head base.
    Type: Grant
    Filed: June 3, 1991
    Date of Patent: October 5, 1993
    Assignee: Sony Corporation
    Inventors: Shinichi Nanjyo, Minoru Shonai, Futoshi Yoshida