Patents by Inventor Katsuaki Sukegawa

Katsuaki Sukegawa 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).

  • Power tool and method for producing the same
    Patent number: 9539649
    Abstract: A power tool (1) and a method of producing such power tool capable of improving dust proof performance with respect to a circuit board (33) and a stator coil (31B), and capable of securing cooling performance to the circuit board. The power tool includes a brushless motor (3) having a hollow stator (31), a rotor (32) positioned in an internal space of the stator, and a motor driver circuit connected to the stator. The stator includes a coil (31B) electrically connected to the motor driver circuit. The coil is coated with a coating agent (31D), and the motor driver circuit is covered with an insulation cover member (33D).
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: January 10, 2017
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Tomomasa Nishikawa, Tetsuhiro Harada, Hiroki Uchida, Yoshihiro Nakano, Hiroki Tsunoda, Katsuaki Sukegawa, Kazuhiko Morita
  • POWER TOOL AND METHOD FOR PRODUCING THE SAME
    Publication number: 20140209341
    Abstract: A power tool (1) and a method of producing such power tool capable of improving dust proof performance with respect to a circuit board (33) and a stator coil (31B), and capable of securing cooling performance to the circuit board. The power tool includes a brushless motor (3) having a hollow stator (31), a rotor (32) positioned in an internal space of the stator, and a motor driver circuit connected to the stator. The stator includes a coil (31B) electrically connected to the mo- for driver circuit. The coil is coated with a coating agent (31D), and the motor driver circuit is covered with an insulation cover member (33D).
    Type: Application
    Filed: August 10, 2012
    Publication date: July 31, 2014
    Applicant: Hitachi Koki Co., Ltd.
    Inventors: Tomomasa Nishikawa, Tetsuhiro Harada, Hiroki Uchida, Yoshihiro Nakano, Hiroki Tsunoda, Katsuaki Sukegawa, Kazuhiko Morita