| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure of a screen, which can prevent an aperture part from being clogged with screen residues, and which simplifies the manufacture of the screen. SOLUTION: In this structure of the waterway-installed type screen 1 which comprises a plurality of juxtaposed bars and in which teeth 4a of a rake 4 for raking the screen residues are to be inserted into each aperture part 3 from an upstream side, a first bar 2A, the back end 2c of which is located to the downstream side with respect to leading end of the teeth 4a of the rake 4, and a second bar 2B, the back end 2c of which is located in the same position or to the upstream side, with respect to the leading ends of the teeth 4a of the rake 4, are alternately arranged. COPYRIGHT: (C)2008,JPO&INPIT
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