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:
Apr. 11, 2017
Filed:
Jun. 11, 2013
Komatsu Ltd., Tokyo, JP;
Kazunari Kawai, Kawasaki, JP;
Shinichi Terada, Kawasaki, JP;
Yuuichi Kodama, Hiratsuka, JP;
Masaaki Uetake, Kawasaki, JP;
Hiroshi Asano, Kobe, JP;
Takashi Minami, Nishinomiya, JP;
Junya Tanimoto, Kyoto, JP;
KOMATSU LTD., Tokyo, JP;
Abstract
An auxiliary tunneling apparatus includes a reaction force receiver and first and second split components. In the excavation of a second tunnel by a boring machine, the reaction force receiver forms a replacement face of a side wall of the second tunnel on a first tunnel side where the first and second tunnels intersect each other, and a gripper of the boring machine pushes against the replacement face. The first and second split components are installed to push against the side wall of the first tunnel, support the reaction force receiver within the first tunnel, and move back and forth with respect to the side wall of the first tunnel.