Patents by Inventor Tetsuo Kotoku

Tetsuo Kotoku 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).

  • Linear-motion telescopic mechanism and robot arm having linear-motion telescopic mechanism
    Patent number: 8925405
    Abstract: A linear-motion telescopic mechanism according to the present invention includes a plurality of block members (22) by which an arbitrary arm length is achieved in such a manner that the plurality of block member (22) are rigidly connected to each other so as to elongate a linear-motion telescopic joint (J3). On the other hand, by separating the plurality of block members (22) one by one from a rigid alignment of the plurality of block members (22), the linear-motion telescopic joint (J3) is contracted. The block members (22) unfixed from the rigid alignment are still serially connected but not in a rigid manner. That is, the block members (22) thus unfixed can be flexed in any directions, and therefore can be housed inside a support member (1) in a compact manner.
    Type: Grant
    Filed: December 17, 2009
    Date of Patent: January 6, 2015
    Assignees: Kawabuchi Mechanical Engineering Laboratory, Inc., National Institute of Advanced Industrial Science and Technology
    Inventors: Ichiro Kawabuchi, Woo-Keun Yoon, Tetsuo Kotoku
  • LINEAR-MOTION TELESCOPIC MECHANISM AND ROBOT ARM HAVING LINEAR-MOTION TELESCOPIC MECHANISM
    Publication number: 20120024091
    Abstract: A linear-motion telescopic mechanism according to the present invention includes a plurality of block members (22) by which an arbitrary arm length is achieved in such a manner that the plurality of block member (22) are rigidly connected to each other so as to elongate a linear-motion telescopic joint (J3). On the other hand, by separating the plurality of block members (22) one by one from a rigid alignment of the plurality of block members (22), the linear-motion telescopic joint (J3) is contracted. The block members (22) unfixed from the rigid alignment are still serially connected but not in a rigid manner. That is, the block members (22) thus unfixed can be flexed in any directions, and therefore can be housed inside a support member (1) in a compact manner.
    Type: Application
    Filed: December 17, 2009
    Publication date: February 2, 2012
    Applicant: KAWABUCHI MECHANICAL ENGINEERING LABORATORY, INC.
    Inventors: Ichiro Kawabuchi, Woo-Keun Yoon, Tetsuo Kotoku