| 摘要 |
PCT No. PCT/JP85/00702 Sec. 371 Date Jul. 30, 1986 Sec. 102(e) Date Jul. 30, 1986 PCT Filed Dec. 23, 1985 PCT Pub. No. WO86/03688 PCT Pub. Date Jul. 3, 1986.A slit screen that is simple to manufacture and excellent in working precision, which includes a screen cylinder in which at least one side of inlet corner portions of slit openings is subjected to chamfering and a cylindrical rotor rotatably disposed on the inside of the screen cylinder and having a large number of protrusions on its surface on the side thereof facing the screen cylinder. The screen cylinder can be made from a plurality of spaced-apart, identical extruded bars of suitable cross-section joined to upper and lower supports. The protrusions on the cylindrical rotor can be non-metallic elastic inserts mounted on a rotor drum. |
