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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.:

US 11016060 B1

PDFFull Text
Date of Patent:
May. 25, 2021

Filed:

May. 31, 2019

Method and apparatus for evaluating damage to magnetic linear body

Applicant:

Tokyo Rope Manufacturing Co., Ltd., Tokyo, JP;

Inventors:

Hiroaki Itoi, Tokyo, JP;

Sadanori Shiiki, Tokyo, JP;

Masamichi Sugahara, Tokyo, JP;

Toshiyuki Moriya, Tokyo, JP;

Assignee:

TOKYO ROPE MANUFACTURING CO., LTD., Tokyo, JP;

Attorney:

Dickinson Wright PLLC

Primary Examiner:

Raul J Rios Russo

Int. Cl.
CPC ...
G01R 33/00 (2006.01); G01R 33/10 (2006.01); G01N 27/83 (2006.01); G01N 27/80 (2006.01); G01N 27/9013 (2021.01); G01N 33/38 (2006.01); G01R 33/02 (2006.01); G01R 33/12 (2006.01); G01V 3/10 (2006.01); G01N 27/82 (2006.01); G01D 5/14 (2006.01); G01D 11/24 (2006.01); G01D 3/02 (2006.01); G01D 5/20 (2006.01); G01R 33/09 (2006.01); G01R 31/28 (2006.01); G01R 33/06 (2006.01);
U.S. Cl.
CPC ...
G01N 27/83 (2013.01); G01D 3/022 (2013.01); G01D 5/145 (2013.01); G01D 5/202 (2013.01); G01D 11/245 (2013.01); G01N 27/80 (2013.01); G01N 27/82 (2013.01); G01N 27/902 (2013.01); G01N 33/383 (2013.01); G01R 33/02 (2013.01); G01R 33/09 (2013.01); G01R 33/093 (2013.01); G01R 33/12 (2013.01); G01V 3/104 (2013.01); G01R 31/2829 (2013.01); G01R 33/06 (2013.01);
Abstract

A damage evaluation apparatus, to evaluate damage to a tendon embedded in concrete. The apparatus includes a magnetizer for generating magnetic force, and a detector for detecting change in magnetism produced from a damaged area of the tendon when magnetized. The magnetizer includes a excitation coil; an iron core passing through a center hole of the excitation coil; a pair of columnar yokes connected to respective ends of the iron core and extending toward the concrete; and a pair of plate-shaped yokes connected to the pair of columnar yokes at a distal end thereof for forming magnetic poles having spread along the surface of the concrete. By passing an electric current through the excitation coil, a magnetic circuit is formed by the yoke shaft, the pair of columnar yokes, the pair of plate-shaped yokes, and the tendon over a range thereof situated between the pair of plate-shaped yokes.

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