Global Patent Index - EP 0837824 B1

EP 0837824 B1 2001-01-31 - DEVICE FOR SEPARATING A GASEOUS LAMINAR BOUNDARY LAYER

Title (en)

DEVICE FOR SEPARATING A GASEOUS LAMINAR BOUNDARY LAYER

Title (de)

VORRICHTUNG ZUM ABLÖSEN DER GASFÖRMIGEN LAMINAREN GRENZSCHICHT

Title (fr)

DISPOSITIF POUR SEPARER LA COUCHE LIMITE LAMINAIRE GAZEUSE

Publication

EP 0837824 B1 (DE)

Application

EP 96919745 A

Priority

  • DE 19525453 A
  • EP 9601972 W

Abstract (en)

[origin: DE19525453A1] The invention concerns a device for separating the gaseous laminar boundary layer (14) from at least one of the two sides (10, 12) of a material web (5), for example of paper, moving, preferably rapidly, in the conveying direction (6). The invention is characterized by at least one corona discharge electrode (17) which is provided with at least one elongate tip (16) and can be connected to a positive (+U) or negative high-voltage source. The invention is further characterized by at least one counter-electrode (18) which is to be associated with the corona discharge electrode (17) and can be connected to a negative (-U) or positive high voltage source or earth. The corona discharge electrode (17) is to be disposed on the side (10) of the material web (5) comprising the boundary layer (14) to be separated, and the associated counter-electrode (18) is to be disposed on the other side (12).

IPC 1-7 (main, further and additional classification)

B65H 23/00; B65H 20/00

IPC 8 full level (invention and additional information)

B41F 23/00 (2006.01); B41F 23/04 (2006.01); B65H 18/26 (2006.01); B65H 20/00 (2006.01); B65H 23/00 (2006.01); B65H 23/04 (2006.01); B65H 23/26 (2006.01); F15D 1/12 (2006.01)

CPC (invention and additional information)

F15D 1/12 (2013.01); B65H 18/26 (2013.01); B65H 23/26 (2013.01); B65H 2406/364 (2013.01)

Designated contracting state (EPC)

AT BE CH DE DK ES FR GB IT LI NL SE

EPO simple patent family

DE 19525453 A1 19970116; AT 199010 T 20010215; DE 59606413 D1 20010308; DK 0837824 T3 20010618; EP 0837824 A1 19980429; EP 0837824 B1 20010131; JP 3285360 B2 20020527; JP H11508505 A 19990727; US 6285032 B1 20010904; WO 9703009 A1 19970130

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