G - Physics – 21 – K
Patent
G - Physics
21
K
G21K 5/10 (2006.01) B65G 49/00 (2006.01)
Patent
CA 2607065
An article irradiation system, includes a radiation source positioned for scanning a target region with radiation, a conveyor system for transporting articles from a loading area through the target region to an unloading area, and radiation shielding material defining a tunnel closely encompassing portions of the conveyor system extending away from the target region toward the loading and unloading areas. The conveyor system is disposed in a path having turns closely encompassed by the radiation shielding material and of such degree between the target region and the loading and/or unloading areas that the radiation shielding material closely encompassing the turns precludes a direct line of sight between the target region and the loading area and/or a direct line of sight between the target region and the unloading area for shielding the loading and/or unloading areas from radiation derived from the radiation source. The closely encompassed turns are curved. Adjacent the outside portions of the curved turns that are within a direct line of sight from the target region, the radiation shielding material is not as close to the path of the conveyor system as the radiation shielding material adjacent the inside of the curved turns and the radiation shielding material is thicker than the radiation shielding material adjacent the inside of the curved turns. The thicker radiation shielding material adjacent the outside portions of the curved turns that are within a direct line of sight from the target region extends in a much thicker corner portion to a far point at a right angle from radiation shielding material that extends in a straight line to the target region, and from the far point the radiation shielding material extends at a right angle from the much thick corner portion toward the path of the conveyor system.
Allen John Thomas
Brazell Michael Scott
Knowles Harrold Brook
Mendonsa Richard Joseph
Miller Richard Clarke
Smart & Biggar
The Titan Corporation
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