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.

Date of Patent:
Dec. 09, 2025

Filed:

May. 11, 2022
Applicant:

Aichi Steel Corporation, Tokai, JP;

Inventors:

Michiharu Yamamoto, Tokai, JP;

Tomohiko Nagao, Tokai, JP;

Hitoshi Aoyama, Tokai, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05D 1/244 (2024.01); G05D 105/85 (2024.01); G05D 109/10 (2024.01);
U.S. Cl.
CPC ...
G05D 1/244 (2024.01); G05D 2105/85 (2024.01); G05D 2109/10 (2024.01);
Abstract

A patrol robot including a plurality of magnetic sensors for detecting a magnetic marker laid on a traveling road has at least two or more magnetic sensors arrayed on a sensor array line linearly extending along any direction. In the patrol robot, two sensor array lines are formed, and since at least any one sensor array line can cross with respect to a relative moving direction of the magnetic marker with a movement of the patrol robot, the magnetic marker can be detected with high reliability, irrespective of the moving mode.


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