Patents by Inventor Kyo Kan

Kyo Kan 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: 8443702
    Abstract: To make improvements in torque wrenches with a torque limiter that uses a cam mechanism and to provide a torque wrench that realizes more stable operation and is capable of highly precise tightening. In a torque wrench with a torque limiter that uses a cam mechanism, a solid columnar roller member 14 is engaged with a cam part 7 of a cam shaft 8 such that it is rotatably supported by a roller support lever member 12 mounted in a head portion 2 such as to be rotatable around a support shaft 16 and such that it is pressed against the cam part 7 by a spring force transmitting rod 18 biased by a torque setting spring. The roller support lever member 12 is configured such that the distance r2 from the support shaft 16 to a point of application of force of the spring force transmitting rod 18 is longer than the distance r1 from the support shaft 16 to the roller member 14.
    Type: Grant
    Filed: February 16, 2010
    Date of Patent: May 21, 2013
    Assignee: Tohnichi Mfg. Co. Ltd.
    Inventors: Kyo Kan, Shozo Aikawa, Tomohiro Ogata, Naoya Masuda, Hiroshi Tsuji
  • Publication number: 20110154961
    Abstract: To make improvements in torque wrenches with a torque limiter that uses a cam mechanism and to provide a torque wrench that realizes more stable operation and is capable of highly precise tightening. In a torque wrench with a torque limiter that uses a cam mechanism, a solid columnar roller member 14 is engaged with a cam part 7 of a cam shaft 8 such that it is rotatably supported by a roller support lever member 12 mounted in a head portion 2 such as to be rotatable around a support shaft 16 and such that it is pressed against the cam part 7 by a spring force transmitting rod 18 biased by a torque setting spring. The roller support lever member 12 is configured such that the distance r2 from the support shaft 16 to a point of application of force of the spring force transmitting rod 18 is longer than the distance r1 from the support shaft 16 to the roller member 14.
    Type: Application
    Filed: February 16, 2010
    Publication date: June 30, 2011
    Applicant: TOHNICHI MFG CO., LTD.
    Inventors: Kyo Kan, Shozo Aikawa, Tomohiro Ogata, Naoya Masuda, Hiroshi Tsuji