EP 0031820 B1 19831109 - GRADING PLANT
Title (en)
GRADING PLANT
Publication
Application
Priority
NO 792278 A 19790709
Abstract (en)
[origin: WO8100066A1] A grading plant with self-cleaning screen for lump materials, the screen (3) being pivotally mounted to a carriage (2) displaceable on horizontal beams (1). The screen has wheels (5) guided in tracks in the beams. Each track has a horizontal portion (11) and a curved downwards directed portion (12). The screen is in a position for discharging when the wheels (5) are in the lower most part of the downwards directed portion. The motion of the screen is exerted by a moving device consisting of a wire arrangement (7) for the backwards directed movement and a return spring (20) for the return motion, or a double-acting hydraulic cylinder (18) moving the carriage in both directions.
IPC 1-7
IPC 8 full level
B07B 1/00 (2006.01); B07B 1/30 (2006.01); B07B 1/46 (2006.01); B07B 1/50 (2006.01)
CPC (source: EP)
Designated contracting state (EPC)
DE FR GB SE
DOCDB simple family (publication)
WO 8100066 A1 19810122; BE 884218 A 19801103; BR 8008741 A 19810428; CA 1144111 A 19830405; DE 3065519 D1 19831215; EP 0031820 A1 19810715; EP 0031820 B1 19831109; FI 70381 B 19860327; FI 70381 C 19860919; FI 802161 A 19810110; JP S56500998 A 19810723; JP S6128387 B2 19860630; NO 144129 B 19810323; NO 144129 C 19810701; NO 792278 L 19810112
DOCDB simple family (application)
NO 8000023 W 19800708; BE 201328 A 19800708; BR 8008741 A 19800708; CA 355806 A 19800709; DE 3065519 T 19800708; EP 80901176 A 19810126; FI 802161 A 19800707; JP 50144380 A 19800708; NO 792278 A 19790709