X-ray or gamma ray systems or devices – Specific application – Absorption
Patent
1998-07-02
2000-05-02
Porta, David P.
X-ray or gamma ray systems or devices
Specific application
Absorption
378 51, 378 55, 378197, 378198, G01N 2304
Patent
active
060581581
ABSTRACT:
An x-ray examination device for checking the contents of closed cargo carriers having two steerable single-track carriages disposed parallel to each other, wherein the carriages each support a vertical column. The free ends of the columns are connected to each other by means of a yoke spanning the space between the carriages, which corresponds to the maximal possible width of the cargo containers. The yoke can be raised and lowered on the two columns. Cantilevers are aligned horizontally, and parallel relative to each other, and are arranged on the yoke. The free ends of the cantilevers support a cross bar. Connected to one end of the cross bar are supports for supporting the x-ray equipment. The x-ray equipment includes an x-ray emitter and an x-ray receiver. Moreover, one or more screen vehicles having leaded mesh screens for surrounding the cargo containers are provided to shield against harmful x-rays outside the cargo container area.
REFERENCES:
patent: 5638420 (1997-06-01), Armistead
patent: 5692028 (1997-11-01), Geus et al.
patent: 5764683 (1998-06-01), Swift et al.
patent: 5838759 (1998-11-01), Armistead
patent: 5903623 (1999-05-01), Swift et al.
Ho Allen C
Porta David P.
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