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:
Apr. 02, 1991
Filed:
May. 26, 1989
Hiroyuki Fukuchi, Yokohama, JP;
Kirin Beer Kabushiki Kaisha, Tokyo, JP;
Abstract
A method and an apparatus for inspecting the sidewalls of bottles are disclosed. The sidewall of a bottle to be inspected is illuminated by a light in a pattern of stripes. At least three near points in an image of lights transmitted through the sidewall which are selected along a scan line are compared in brightness. When the central one of the three points to be noted has a brightness differing from the other near points on both sides of the noted point by more than a set value, the noted point is detected as a defect point. Based on the thus detected defect point, the presence of a defect on the sidewall of the bottle is judged. The method and the apparatus for inspecting the sidewalls of bottles can detect refractive defects as well as light-blocking defects with high precision.