Patents by Inventor Juurou Kobayashi

Juurou Kobayashi 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).

  • Electric power tool
    Patent number: 6863135
    Abstract: Disclosed is an electric power tool having a gear mechanism, which reduces a noise by absorbing collision of gears and is resistible to a high torque. A power transmission key 7 composed of high-strength plastic is provided between an output shaft 3 and a gear 4, and a plane or a V-groove is formed on each of the output shaft 3 and the gear 4 contacting the power transmission key 7.
    Type: Grant
    Filed: August 28, 2003
    Date of Patent: March 8, 2005
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Junichi Kamimura, Mitsuo Ogura, Mitsuyuki Ishikawa, Yoshimitsu Kawasaki, Juurou Kobayashi, Naoya Eto, Hiroto Inagawa, Takuhiro Murakami, Satsuo Sato, Yoshikazu Yokoyama
  • Electric power tool
    Publication number: 20040040399
    Abstract: Disclosed is an electric power tool having a gear mechanism, which reduces a noise by absorbing collision of gears and is resistible to a high torque. A power transmission key 7 composed of high-strength plastic is provided between an output shaft 3 and a gear 4, and a plane or a V-groove is formed on each of the output shaft 3 and the gear 4 contacting the power transmission key 7.
    Type: Application
    Filed: August 28, 2003
    Publication date: March 4, 2004
    Applicant: HITACHI KOKI CO., LTD.
    Inventors: Junichi Kamimura, Mitsuo Ogura, Mitsuyuki Ishikawa, Yoshimitsu Kawasaki, Juurou Kobayashi, Naoya Eto, Hiroto Inagawa, Takuhiro Murakami, Satsuo Sato, Yoshikazu Yokoyama
  • Electric power tool
    Patent number: 6619410
    Abstract: Disclosed is an electric power tool having a gear mechanism, which reduces a noise by absorbing collision of gears and is resistible to a high torque. A power transmission key 7 composed of high-strength plastic is provided between an output shaft 3 and a gear 4, and a plane or a V-groove is formed on each of the output shaft 3 and the gear 4 contacting the power transmission key 7.
    Type: Grant
    Filed: August 6, 2001
    Date of Patent: September 16, 2003
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Junichi Kamimura, Mitsuo Ogura, Mitsuyuki Ishikawa, Yoshimitsu Kawasaki, Juurou Kobayashi, Naoya Eto, Hiroto Inagawa, Takuhiro Murakami, Satsuo Sato, Yoshikazu Yokoyama
  • Electric power tool
    Publication number: 20020020540
    Abstract: Disclosed is an electric power tool having a gear mechanism, which reduces a noise by absorbing collision of gears and is resistible to a high torque. A power transmission key 7 composed of high-strength plastic is provided between an output shaft 3 and a gear 4, and a plane or a V-groove is formed on each of the output shaft 3 and the gear 4 contacting the power transmission key 7.
    Type: Application
    Filed: August 6, 2001
    Publication date: February 21, 2002
    Inventors: Junichi Kamimura, Mitsuo Ogura, Mitsuyuki Ishikawa, Yoshimitsu Kawasaki, Juurou Kobayashi, Naoya Eto, Hiroto Inagawa, Takuhiro Murakami, Satsuo Sato, Yoshikazu Yokoyama