Patents by Inventor Yoshinobu KUMAKAWA

Yoshinobu KUMAKAWA 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).

  • Beam-column connection structure of continued beam connection portion
    Patent number: 8511033
    Abstract: A beam-column connection structure is formed, after installing a continued beam member to a predetermined position, by connecting and fixing lateral beam members, to side faces of an end portion of the continued beam member using a drift pin while connection grooves are fitted to side face connection metal fittings which are attached to the end portion, connecting an extension beam member to the end portion of the continued beam member using a drift pin while a connection groove formed at an end face of the extension beam member is fitted to the end face connection metal fitting, and connecting and fixing column members, to the upper face and lower face of the end portion of the continued beam member using a drift pin while fitting holes, formed at end faces of the column members, are fitted to the top end side portions of column connection pole-like fittings.
    Type: Grant
    Filed: May 21, 2012
    Date of Patent: August 20, 2013
    Assignees: Sumitomo Forestry Co., Ltd., Kanai Co., Ltd.
    Inventors: Yoshinobu Kumakawa, Junichi Imai, Kunio Kanai, Masayoshi Nakamura
  • BEAM-COLUMN CONNECTION STRUCTURE OF CONTINUED BEAM CONNECTION PORTION
    Publication number: 20130125497
    Abstract: A beam-column connection structure is formed, after installing a continued beam member to a predetermined position, by connecting and fixing lateral beam members, to side faces of an end portion of the continued beam member using a drift pin while connection grooves are fitted to side face connection metal fittings which are attached to the end portion, connecting an extension beam member to the end portion of the continued beam member using a drift pin while a connection groove formed at an end face of the extension beam member is fitted to the end face connection metal fitting, and connecting and fixing column members, to the upper face and lower face of the end portion of the continued beam member using a drift pin while fitting holes, formed at end faces of the column members, are fitted to the top end side portions of column connection pole-like fittings.
    Type: Application
    Filed: May 21, 2012
    Publication date: May 23, 2013
    Applicants: KANAI CO., LTD., Sumitomo Forestry Co., Ltd.
    Inventors: Yoshinobu KUMAKAWA, Junichi IMAI, Kunio KANAI, Masayoshi NAKAMURA
  • Beam joint hardware
    Patent number: D700506
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: March 4, 2014
    Assignees: Sumitomo Forestry Co., Ltd., Kanai Co., Ltd.
    Inventors: Yoshinobu Kumakawa, Junichi Imai, Kunio Kanai, Masayoshi Nakamura
  • Beam joint hardware
    Patent number: D708935
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: July 15, 2014
    Assignees: Sumitomo Forestry Co., Ltd., Kanai Co., Ltd.
    Inventors: Yoshinobu Kumakawa, Junichi Imai, Kunio Kanai, Masayoshi Nakamura