| 摘要 |
A paint filter comprising a conical wall structure of sheet material embodying top and bottom portions and intermediate the top and bottom portions diametrically disposed wall openings covered with a foramenous webbing and intermediate the wall openings wall portions which connect the top and bottom portions of the structure characterized in that one of the wall portions of the structure intermediate the wall openings contains a secondary opening also covered with said foramenous webbing which is located substantially at the apex of the bottom portion. |
