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:
Mar. 31, 2020
Filed:
Oct. 11, 2017
Applicant:
Daifuku Co., Ltd., Osaka-shi, JP;
Inventors:
Takahiro Horii, Hinocho, JP;
Yoshihiro Nakano, Hinocho, JP;
Assignee:
Daifuku Co., Ltd., Osaka-shi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E01B 35/04 (2006.01); B61B 3/02 (2006.01); B61K 9/08 (2006.01);
U.S. Cl.
CPC ...
E01B 35/04 (2013.01); B61B 3/02 (2013.01); B61K 9/08 (2013.01);
Abstract
A rail inspection device comprises a carriage having wheels, a first roller in contact with a side surface of a first rail, a second roller in contact with a side surface of a second rail, a first position sensor configured to detect a position of a side surface of the first rail or an outer surface of the first roller, a second position sensor configured to detect a position of a side surface of the second rail or an outer surface of the second roller, and at least one rotation sensor each configured to detect a rotation angle of a wheel, the first roller, or the second roller.