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:
Jan. 13, 2026
Filed:
Apr. 14, 2020
Hitachi High-tech Corporation, Tokyo, JP;
Takeshi Tamakoshi, Tokyo, JP;
Satoru Kaneko, Tokyo, JP;
Yasuaki Aoyama, Tokyo, JP;
Hiroyuki Kobayashi, Tokyo, JP;
Ryosuke Hoshi, Tokyo, JP;
Hiroshi Watanabe, Tokyo, JP;
Katsuhiro Kambara, Tokyo, JP;
Kuniaki Onizawa, Tokyo, JP;
HITACHI HIGH-TECH CORPORATION, Tokyo, JP;
Abstract
A conveying device detects an abnormality due to a change in the surface state of the conveying plane. The conveying device has a conveying plane for conveying thereabove a conveying container equipped with a magnetic body, a position detection unit for detecting the position of the conveying container above the conveying plane, a magnetic pole disposed below the conveying plane and equipped with a core and a coil, a drive unit for applying a voltage to the magnetic pole, and a calculation unit for controlling the drive unit. The calculation unit calculates the conveying speed of the conveying container on the basis of the position of the conveying container above the conveying plane and the time at which the conveying container passes through the position, and detects the surface state of the conveying plane on the basis of the calculated conveying speed of the conveying container.