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:
May. 31, 1983
Filed:
Sep. 26, 1980
Masato Ashina, Yokosuka, JP;
Toyo Seikan Kaisha, Ltd., Tokyo, JP;
Abstract
Method and apparatus for inspecting empty cans entirely automatically includes a flange inspecting process and a drawing condition inspecting process. The flange and the drawing condition inspections are simultaneously carried out in the same inspecting station during the forcible rotation of the can. The flange portion is checked for craks and length, and the outer body surface is checked for the drawing conition respectively in a non-destructive and contactless manner by utilization of static electromagnetic inspection and light reflection inspection methods. A prestored reference value signal, which is compared with a converted electrical signal for the determination of whether cans are good or not, is a signal of a value calculated by a microcomputer on the basis of values which are sampled, equally divided, signal values corresponding to one rotation of a forcibly rotated standard good empty can.