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:
Sep. 08, 2026
Filed:
Aug. 21, 2023
Mitsubishi Heavy Industries Machinery Systems, Ltd., Hyogo, JP;
Shuichi Takemoto, Hyogo, JP;
Mitsuhiro Nadachi, Hyogo, JP;
Abstract
A defect detecting device is provided for a corrugated cardboard sheet having one surface formed with a recessed portion of a first score in a thickness direction and another surface formed with a recessed portion of a second score having a smaller depth in the thickness direction. The device includes: a measurement device configured to measure a distance from an arrangement position to a front end of the sheet and a distance from the arrangement position to the recessed portion of the first score or the second score to acquire a measured distance; and a determination device configured to perform comparison of the measured distance with a threshold value in a determination region that is predetermined and preset from the front end toward a back end of the corrugated cardboard sheet to determine a front/rear surface defect or a front/back side defect of the sheet.