Baggage inspection system

• US 4,783,794 A
• Filed: 07/17/1986
• Issued: 11/08/1988
• Est. Priority Date: 08/29/1985
• Status: Expired due to Fees

• Current Assignee: Heimann GmbH
• Original Assignee: Heimann GmbH
• Inventors: Dietrich, Rolf
• Primary Examiner(s): Church, Craig E.
• Assistant Examiner(s): Freeman, John C.
• Application Number:
  US06/886,362
• Time in Patent Office: 845 Days
• Field of Search: 378/51, 378/57, 378/62, 378/58, 378/208, 250/328, 198/817
• US Class Current: 378/57
• CPC Class Codes: G01N 23/04 and forming images of the material
• CPC Class Codes: G01V 5/20 Detecting prohibited goods, e.g. weapons, explosives, hazardous substances, contraband or smuggled objects

Abstract

A baggage inspection system has a conveyor path disposed between an X-ray source, which genertes an X-ray beam, and a radiation detector for detecting radiation passing through articles on the conveyor path. The conveyor path is formed by two surfaces disposed at a right angle relative to each other, with the right angle being inclined relative to the horizontal so that articles on the conveyor path are forced by gravity to lie against one of the surfaces. At least one of the surfaces is a moveable surface, and the other surface may also be a moveable surface, or a roller surface or a plate against which the articles slide. The radiation detector may be an angled detector row so as to encompass substantially all of the radiation beam within its field of view.

Claims

1. A baggage inspection system comprising:

an X-ray source for generating an X-ray beam having a central ray;

a radiation detector disposed for detecting radiation from said X-ray source;

a conveyor path disposed between said X-ray source and said radiation detector for transporting articles through said X-ray beam in a transport direction, said conveyor path consisting of two conveyor surfaces disposed at a right angle with respect to each other, at least one of said conveyor surfaces being movable for transporting said articles, said right angle being unsymmetrically inclined relative to a horizontal direction which is transverse with respect to the transport direction such that said articles lie against both conveyor surfaces as a result of the weight of the articles, and one of said conveyor surfaces being disposed between said X-ray source and said articles at substantially a right angle relative to said central ray; and

means for generating a visible image of said articles from signals received from said radiation detector.

2. A baggage inspection system is claimed in claim 1, wherein said radiation detector comprises a central section disposed substantially parallel to said one conveyor surface disposed between said X-ray source and the articles, and two lateral sections disposed on opposite sides of said central section and bent at an obtuse angle relative to said central section in a direction toward said conveyor path.

3. A baggage inspection system as claimed in claim 1, wherein said moveable conveyor surface is formed by a conveyor belt, and the other of said conveyor surfaces is a roller surface.