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:
May. 05, 2020
Filed:
Dec. 01, 2015
Applicant:
Hitachi Zosen Corporation, Osaka, JP;
Inventors:
Toshiyuki Okada, Osaka, JP;
Takayuki Iwamuro, Osaka, JP;
Assignee:
Hitachi Zosen Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21D 9/11 (2006.01); E21D 9/093 (2006.01); E21D 9/08 (2006.01); E21D 9/10 (2006.01); G01L 1/22 (2006.01); G01L 5/12 (2006.01);
U.S. Cl.
CPC ...
E21D 9/112 (2013.01); E21D 9/0879 (2016.01); E21D 9/093 (2016.01); E21D 9/1093 (2013.01); E21D 9/11 (2013.01); G01L 1/22 (2013.01); G01L 5/12 (2013.01);
Abstract
A tunnel boring machine includes: a cutter head; a cutter support; a cutter driving unit; a rotational position sensing unit; a strain sensor; and a data processing unit configured to calculate a force acting on the cutter head in association with the position of the cutter head in the rotational direction, based on sensing results of the strain sensor and the rotational position sensing unit.