Patents by Inventor Nobuyuki Yasui

Nobuyuki Yasui 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).

  • Joint device for joining pretensioned brace member to connector nodes in space truss structure
    Patent number: 5632129
    Abstract: A joint device enables to join a brace member, into which regulated pretension is exactly introduced, to unmovable connector nodes, comprising a steel rod 1 having a swelled portion 1A and a threaded connector portion 1B formed on the end thereof, respectively, one sleeve 3 providing an external threaded part 3A joined to one node 2M, which contacts a swelled portion 1A: and another sleeve 4 providing an external threaded part 4A joined to node 2N, which engages threaded connector portion 1B. The length from a node-contact face 3c of sleeve 3 to a node-contact face 4c of sleeve 4 is selected equal to difference of length between both nodes 2, 2 from length for generating a preferable elongation enough to introduce regulated pretension into steel rod 1.
    Type: Grant
    Filed: February 23, 1996
    Date of Patent: May 27, 1997
    Assignee: Kawatetsu Kenzai Kabushiki Kaisha
    Inventors: Katsuhiko Imai, Yasuhiro Yamaoka, Nobuyuki Yasui, Masayoshi Kurashige