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:
Nov. 28, 1989
Filed:
May. 22, 1987
Walter Glockmann, Schlangenbad, DE;
Thomas Herwig, Eltville, DE;
Heimann GmbH, , DE;
Abstract
An x-ray scanner for detecting plastic articles has an x-ray source which generates a fan-shaped x-ray beam through which an article to be examined is moved. A primary radiation detector array is disposed at a side of the article opposite to the x-ray source and functions to provide a normal x-ray image identifying metal articles. Additional detectors, which detect scatter radiation are disposed around the examination space at a distance from the primary radiation detector. The scatter radiation detectors detect scattered radiation characteristic of that produced by plastic articles. Signals from the scatter radiation detectors are processed, by which the presence of a plastic article can be identified.