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. 03, 2018
Filed:
Nov. 12, 2013
Applicant:
Hitachi Zosen Corporation, Osaka-shi, Osaka, JP;
Inventors:
Katsuya Sasaki, Osaka, JP;
Keitaro Hidani, Osaka, JP;
Kohei Takatori, Osaka, JP;
Takuya Miwa, Osaka, JP;
Assignee:
HITACHI ZOSEN CORPORATION, Osaka-shi, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 44/00 (2006.01); E21B 45/00 (2006.01); E21D 9/06 (2006.01); E21B 47/09 (2012.01); G01H 17/00 (2006.01); G01M 99/00 (2011.01); G01H 1/00 (2006.01); G01H 3/00 (2006.01); E21D 9/093 (2006.01);
U.S. Cl.
CPC ...
E21B 45/00 (2013.01); E21B 47/09 (2013.01); E21D 9/06 (2013.01); E21D 9/093 (2016.01); G01H 1/00 (2013.01); G01H 3/00 (2013.01); G01H 17/00 (2013.01); G01M 99/005 (2013.01);
Abstract
An excavation status monitoring system for a tunneling machine that includes a detecting portion mounted on a cutter head of the tunneling machine, including an accelerometer that detects a vibration or an acoustic sensor that detects a sound wave and a sound output portion that outputs a signal detected by the detecting portion as sound.