Patent · US Expired

Device for detecting surface flaws of rapidly moving sheet material

US4377746A · kind A · utility

7Cited by

4References

12Claims

0Family size

Assignee

Hoesch Werke AG

Inventors

H. J. Kopineck · Dortmund, DE
Wilhelm Tappe · Dortmund, DE

Key dates

Filing date	Nov 20, 1980
Grant date	Mar 22, 1983
Priority date	—
Expiry date	Nov 20, 2000

Classification

Technology area (CPC G)Physics
CPC primaryG01N21/89
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A device for detecting surface flaws of rapidly moving metal strip in rolling mills includes a lens which scans the sheet material surface and a camera tube which converts optical images of the lens into electrical values. These values are stored in a magnetic storage and are called out to be converted and displayed on an image reproducing device as a visible image. At least one image amplifier or image converter tube is interposed between the lens and the camera tube and includes an electronic speed shutter.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.