EP 0651091 A1 19950503 - Finely perforated undulating screen cylinder.
Title (en)
Finely perforated undulating screen cylinder.
Title (de)
Wellenförmiger Siebzylinder mit feinen Lochungen.
Title (fr)
Tamis circulaire à surface ondulée avec des perforations fines.
Publication
Application
Priority
US 14495893 A 19931028
Abstract (en)
A paper pulp screen construction including a housing for receiving a flow of paper stock to be screened with a cylindrical screen therein and a rotor movable past the screen plate with the screen plate formed in multiple layers and the layers shaped in undulations, in one form with smaller holes in a screen layer between inner and outer layers having holes of equal size, and in another form with the inner layer first receiving the stock and being formed with small openings and the outer layer with larger openings. <IMAGE>
IPC 1-7
IPC 8 full level
B01D 29/25 (2006.01); B03B 5/00 (2006.01); D21D 5/16 (2006.01)
CPC (source: EP KR)
Citation (search report)
- [X] WO 8704474 A1 19870730 - AHLSTROEM OY [FI]
- [X] EP 0471195 A1 19920219 - AHLSTROEM OY [FI]
- [XY] DE 3638408 A1 19880519 - HETT ALEXANDER MASCH GIESS [DE]
- [DY] US 4954249 A 19900904 - GERO WILLIAM [US], et al
- [A] DE 252334 C
Designated contracting state (EPC)
DE ES FR GB IT SE
DOCDB simple family (publication)
EP 0651091 A1 19950503; BR 9404222 A 19950627; CA 2132921 A1 19950429; FI 945073 A0 19941027; FI 945073 A 19950429; JP H07189158 A 19950725; KR 950011762 A 19950516
DOCDB simple family (application)
EP 94630058 A 19941006; BR 9404222 A 19941024; CA 2132921 A 19940926; FI 945073 A 19941027; JP 24740494 A 19941013; KR 19940027248 A 19941025