Patents by Inventor Seiichi Kanazawa

Seiichi Kanazawa 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).

  • High strength bolted structure and method of securing nut and torque-shear type high strength bolt and joining method using same
    Publication number: 20070177958
    Abstract: The present invention provides a join structure comprised of a box section column and split T-section joined by a high strength bolt and a method of securing a nut to an inside of the box section column. The present invention further provides a Torque-Shear type high strength bolt tightly tightened by a controlled tension and a joining method of a steel member using that bolt. The join structure is comprised of a box section column, a split T-section attached to its outer surface, and a high strength bolt inserted from the outside of the split T-section and fastened with the nut. The nut is secured to the box section column by joining a sleeve secured to a washer formed integrally with the nut and a sleeve of a nut holding part from the outside of the column. The Torque-Shear type high strength bolt has a pintail for controlling the torque at its top.
    Type: Application
    Filed: March 22, 2007
    Publication date: August 2, 2007
    Applicants: Nippon Steel Corporation, Nippon Steel Bolten Co., Ltd.
    Inventors: Nobuyoshi Uno, Masahiro Nagata, Hidetoshi Tamasaki, Seiichi Kanazawa, Kiyoshi Hatanaka, Toshio Miyagawa
  • High strength bolted structure and method of securing nut and torque-shear type high strength bolt and joining method using same
    Patent number: 7204667
    Abstract: A join structure comprises a box section column and spit T-section joined by a high strength bolt and a method secures a nut to an inside of the box section column. A Torque-Shear type high strength bolt is tightly tightened by a controlled tension and a joining method of a steel member uses that bolt. The join structure is comprised of a box section column, a split T-section attached to its outer surface, and a high strength bolt inserted from the outside of the split T-section and fastened with the nut. The nut is secured to the box section column by joining a sleeve secured to a washer formed integrally with the nut and a sleeve of a nut holding part from the outside of the column. The Torque-Shear type high strength bolt has a pintail for controlling the torque at its top.
    Type: Grant
    Filed: December 18, 2001
    Date of Patent: April 17, 2007
    Assignees: Nippon Steel Corporation, Nippon Steel Bolten Co., Ltd.
    Inventors: Nobuyoshi Uno, Masahiro Nagata, Hidetoshi Tamasaki, Seiichi Kanazawa, Kiyoshi Hatanaka, Toshio Miyagawa
  • High tensile bolt connection structure, method of fixing nut for the structure, torsia high tensile bolt, and connection method using the torsia high tension bolt
    Publication number: 20030021652
    Abstract: The present invention provides a join structure comprised of a box section column and split T-section joined by a high strength bolt and a method of securing a nut to an inside of the box section column. The present invention further provides a Torque-Shear type high strength bolt tightly tightened by a controlled tension and a joining method of a steel member using that bolt. The join structure is comprised of a box section column, a split T-section attached to its outer surface, and a high strength bolt inserted from the outside of the split T-section and fastened with the nut. The nut is secured to the box section column by joining a sleeve secured to a washer formed integrally with the nut and a sleeve of a nut holding part from the outside of the column.
    Type: Application
    Filed: August 16, 2002
    Publication date: January 30, 2003
    Inventors: Nobuyoshi Uno, Masahiro Nagata, Hidetoshi Tamasaki, Seiichi Kanazawa, Kiyoshi Hatanaka, Toshio Miyagawa