Patents by Inventor Masahiro Sashino

Masahiro Sashino 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).

  • Motor having rotor formed by using thermosetting resin
    Patent number: 6489696
    Abstract: A rotor of a motor has a cylindrical magnet coaxially disposed with a shaft. The shaft and the magnet are bonded with thermosetting resin formed by injection molding. Since the molding shrinkage of the thermosetting resin is so small that a high preciseness is achieved in the motor structure. This precision structure can reduce vibration due to unbalance of a rotor. Also, an annealing process, in which a motor is left at a temperature higher than the limit temperature for operating the motor, can be eliminated. As a result, the efficiency of producing the motor can be improved.
    Type: Grant
    Filed: May 11, 2000
    Date of Patent: December 3, 2002
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masahiro Sashino, Masaaki Matsubara, Tomiaki Sakano
  • Motor having rotor formed by using thermosetting resin
    Publication number: 20020047329
    Abstract: A rotor of a motor has a cylindrical magnet coaxially disposed with a shaft. The shaft and the magnet are bonded with thermosetting resin formed by injection molding. Since the molding shrinkage of the thermosetting resin is so small that a high preciseness is achieved in the motor structure. This precision structure can reduce vibration due to unbalance of a rotor. Also, an annealing process, in which a motor is left at a temperature higher than the limit temperature for operating the motor, can be eliminated. As a result, the efficiency of producing the motor can be improved.
    Type: Application
    Filed: May 11, 2000
    Publication date: April 25, 2002
    Inventors: Masahiro Sashino, Masaaki Matsubara, Tomiaki Sakano