Patents by Inventor Kenichi Takaada

Kenichi Takaada 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).

  • Patent number: 11020846
    Abstract: Provided is a work tool that can work suitably in cooperation with an attachment device connected to a main body of the work tool to enhance work efficiency. The work tool includes a main body 2, and a control circuit 71 configured to provide control over the main body 2. The main body 2 includes a motor 3, an end-bit mount portion 10 and an end bit 14 as a work part configured to be driven by the motor 3 to perform a work. A dust collector 100 is connectable to the main body 2 to assist the work. The control circuit 71 is configured to detect whether the dust collector 100 is connected to the main body 2 and change the control over the main body 2 based on whether the connection is established or not.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: June 1, 2021
    Assignee: Koki Holdings Co., Ltd.
    Inventors: Yoshikazu Kawano, Tomoaki Sudo, Kenichi Takaada, Shinichi Sakuma
  • Publication number: 20190070721
    Abstract: Provided is a work tool that can work suitably in cooperation with an attachment device connected to a main body of the work tool to enhance work efficiency. The work tool includes a main body 2, and a control circuit 71 configured to provide control over the main body 2. The main body 2 includes a motor 3, an end-bit mount portion 10 and an end bit 14 as a work part configured to be driven by the motor 3 to perform a work. A dust collector 100 is connectable to the main body 2 to assist the work. The control circuit 71 is configured to detect whether the dust collector 100 is connected to the main body 2 and change the control over the main body 2 based on whether the connection is established or not.
    Type: Application
    Filed: January 27, 2017
    Publication date: March 7, 2019
    Inventors: Yoshikazu Kawano, Tomoaki Sudo, Kenichi Takaada, Shinchi Sakuma
  • Patent number: 6745883
    Abstract: In an electric power tool having a clutch ring for adjusting a fastening torque, an outer member 3 which are lower in hardness than a base member 2 of the clutch ring 1 has a plurality of projections discontinuously arranged on the outer peripheral face of the base member 2.
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: June 8, 2004
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Yasuo Eto, Hideki Kurosawa, Yoshiaki Adachi, Kenichi Takaada
  • Publication number: 20030178280
    Abstract: In an electric power tool having a clutch ring for adjusting a fastening torque, an outer member 3 which are lower in hardness than a base member 2 of the clutch ring 1 has a plurality of projections discontinuously arranged on the outer peripheral face of the base member 2.
    Type: Application
    Filed: December 18, 2002
    Publication date: September 25, 2003
    Applicant: Hitachi Koki Co., Ltd.
    Inventors: Yasuo Eto, Hideki Kurosawa, Yoshiaki Adachi, Kenichi Takaada
  • Patent number: 5799739
    Abstract: In a battery-driven tool, comprising a motor equipped with a fan and air windows arranged on the casing where the motor is positioned and for sending cooling air generated by rotation of the fan to outside, the object of the present invention is to send hydrogen gas generated by overdischarge to outside so that hydrogen gas is not accumulated in the battery chamber, and to exclude undesirable effect on the designing of the battery-driven tool. To attain the object, the motor chamber to accommodate the motor equipped with the fan is communicated with the battery chamber where the battery is accommodated.
    Type: Grant
    Filed: October 25, 1996
    Date of Patent: September 1, 1998
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Kenichi Takaada, Hideki Kurosawa, Yoshiaki Adachi, Hideki Watanabe
  • Patent number: D520830
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: May 16, 2006
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Yoshitaka Suzuki, Masanori Okada, Masato Sakai, Kenichi Takaada