Patents by Inventor Kuzuhiko Sakiyama

Kuzuhiko Sakiyama 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).

  • Method and apparatus for automatically tightening and untightening a bolt
    Patent number: 5245895
    Abstract: A method and apparatus for automatically tightening and untightening bolts which are assembling and fastening devices for a form used in centrifugal compacting and molding concrete products, in which engaging members are brought into engagement with rotary supports which support the form. A bolt tightening and untightening mechanism is moved with the rotary supports, and the bolts are automatically tightened and untightened during the movement thereof. Engaging members are operated more than a dimensional difference of the rotary supports so that even if dimensions of the rotary supports are different according to the kind of the form, the engaging members can be positively engaged with the rotary supports, or the bolt tightening and untightening mechanism is moved up and down in advance so that a height position thereof becomes a predetermined height with respect to the rotary supports.
    Type: Grant
    Filed: October 3, 1991
    Date of Patent: September 21, 1993
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Katsuhiko Yoshida, Yoshinori Narahashi, Yuji Nakajima, Kuzuhiko Sakiyama