Patents by Inventor Toshihiko Yoshizumi

Toshihiko Yoshizumi 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).

  • Easily-cuttable tunnel segment structure
    Patent number: 7004679
    Abstract: The present invention relates to a novel easily-cuttable tunnel segment structure used for the departure of a shield machine from a main tunnel to a branch tunnel or the return to the main tunnel from the branch tunnel, and provides an easily-cuttable tunnel segment structure 1 constructed by connecting a plurality of easily-cuttable tunnel segment pieces 2 in the longitudinal direction of a tunnel, wherein at least an easily-cuttable area 3 is formed by concrete 7 in which easily-cuttable reinforcement members are arranged, and a join disposed at least in the easily-cuttable area 3 in the longitudinal direction has an easily-cuttable join structure.
    Type: Grant
    Filed: November 21, 2002
    Date of Patent: February 28, 2006
    Assignees: Nippon Steel Corporation, Taisei Corporation, GEOSTR Corporation
    Inventors: Ryoichi Naka, Toshihiko Yoshizumi, Shinichi Nakata, Fumio Kondoh, Seiichi Satoh, Osamu Ishita, Yutaka Fujino, Tukasi Chiba
  • Easily-cuttable tunnel segment structure
    Publication number: 20030113168
    Abstract: The present invention relates to a novel easily-cuttable tunnel segment structure used for the departure of a shield machine from a main tunnel to a branch tunnel or the return to the main tunnel from the branch tunnel, and provides an easily-cuttable tunnel segment structure 1 constructed by connecting a plurality of easily-cuttable tunnel segment pieces 2 in the longitudinal direction of a tunnel, wherein at least an easily-cuttable area 3 is formed by concrete 7 in which easily-cuttable reinforcement members are arranged, and a join disposed at least in the easily-cuttable area 3 in the longitudinal direction has an easily-cuttable join structure.
    Type: Application
    Filed: November 21, 2002
    Publication date: June 19, 2003
    Inventors: Ryoichi Naka, Toshihiko Yoshizumi, Shinichi Nakata, Fumio Kondoh, Seiichi Satoh, Osamu Ishita, Yutaka Fujino, Tukasi Chiba
  • Method and apparatus for drying veneer sheet
    Patent number: 4486963
    Abstract: A method of drying a veneer sheet is provided. The method comprises the steps of tenderizing, compressing, and drying a veneer sheet. The compressing and drying steps are performed at the same time. The tenderizing step is preferably be performed before the above two steps but may be done thereafter or at the same time. An apparatus for performing the method is also disclosed. The apparatus comprises tenderizing means, deceleration transfer means, and heating means. The deceleration and the heating means are combined into one section. A plurality of rollers are used as deceleration transfer means.
    Type: Grant
    Filed: September 28, 1982
    Date of Patent: December 11, 1984
    Assignee: Meinan Machinery Works, Inc.
    Inventors: Masaru Koike, Yasumasa Hasegawa, Satoru Shimosaka, Nagara Aoyama, Toshihiko Yoshizumi
  • Method and apparatus for drying veneer sheet
    Patent number: 4473099
    Abstract: A method of drying a veneer sheet is provided. The method comprises the steps of tenderizing, compressing, and drying a veneer sheet. The compressing and drying steps are performed at the same time. The tenderizing step is preferably performed before the above two steps but may be done thereafter or at the same time. An apparatus for performing the method is also disclosed. The apparatus comprises tenderizing means, deceleration transfer means, and heating means. The deceleration and the heating means are combined into one section. A plurality of rollers are used as deceleration transfer means.
    Type: Grant
    Filed: August 11, 1980
    Date of Patent: September 25, 1984
    Inventors: Masaru Koike, Yasumasa Hasegawa, Satoru Shimosaka, Nagara Aoyama, Toshihiko Yoshizumi
  • Tenderizing device
    Patent number: 4469154
    Abstract: A method of drying a veneer sheet is provided. The method comprises the steps of tenderizing, compressing, and drying a veneer sheet. The compressing and drying steps are performed at the same time. The tenderizing step is preferably be performed before the above two steps but may be done thereafter or at the same time. An apparatus for performing the method is also disclosed. The apparatus comprises tenderizing means, deceleration transfer means, and heating means. The deceleration and the heating means are combined into one section. A plurality of rollers are used as deceleration transfer means.
    Type: Grant
    Filed: September 28, 1982
    Date of Patent: September 4, 1984
    Assignee: Meinan Machinery Works, Inc.
    Inventors: Masaru Koike, Yasumasa Hasegawa, Satoru Shimosaka, Nagara Aoyama, Toshihiko Yoshizumi
  • Apparatus for drying veneer sheet
    Patent number: 4442876
    Abstract: A method of drying a veneer sheet is provided. The method comprises the steps of tenderizing, compressing, and drying a veneer sheet. The compressing and drying steps are performed at the same time. The tenderizing step is preferably be performed before the above two steps but may be done thereafter or at the same time. An apparatus for performing the method is also disclosed. The apparatus comprises tenderizing means, deceleration transfer means, and heating means. The deceleration and the heating means are combined into one section. A plurality of rollers are used as deceleration transfer means.
    Type: Grant
    Filed: September 28, 1982
    Date of Patent: April 17, 1984
    Assignee: Meinan Machinery Works, Inc.
    Inventors: Masaru Koike, Yasumasa Hasegawa, Satoru Shimosaka, Nagara Aoyama, Toshihiko Yoshizumi