The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 28, 2006
Filed:
Nov. 21, 2002
Ryoichi Naka, Tokyo, JP;
Toshihiko Yoshizumi, Tokyo, JP;
Shinichi Nakata, Nishinomiya, JP;
Fumio Kondoh, Yao, JP;
Seiichi Satoh, Tokyo, JP;
Osamu Ishita, Tokyo, JP;
Yutaka Fujino, Tokyo, JP;
Tukasi Chiba, Tokyo, JP;
Ryoichi Naka, Tokyo, JP;
Toshihiko Yoshizumi, Tokyo, JP;
Shinichi Nakata, Nishinomiya, JP;
Fumio Kondoh, Yao, JP;
Seiichi Satoh, Tokyo, JP;
Osamu Ishita, Tokyo, JP;
Yutaka Fujino, Tokyo, JP;
Tukasi Chiba, Tokyo, JP;
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 structureconstructed by connecting a plurality of easily-cuttable tunnel segment piecesin the longitudinal direction of a tunnel, wherein at least an easily-cuttable areais formed by concretein which easily-cuttable reinforcement members are arranged, and a join disposed at least in the easily-cuttable areain the longitudinal direction has an easily-cuttable join structure.