(19)
(11)
EP 0 261 117 A1
(12)
(43)
Date of publication:
30.03.1988
Bulletin 1988/13
(21)
Application number:
86903389.0
(22)
Date of filing:
19.05.1986
(51)
International Patent Classification (IPC):
B01D
29/
17
( . )
B01D
29/
37
( . )
D21D
5/
02
( . )
B01D
29/
25
( . )
B01D
29/
62
( . )
D21D
5/
16
( . )
(86)
International application number:
PCT/FI1986/000051
(87)
International publication number:
WO 1986/007105
(
04.12.1986
Gazette 1986/26)
(84)
Designated Contracting States:
AT BE CH DE FR GB IT LI LU NL SE
(30)
Priority:
29.05.1985
US 19850738743
(71)
Applicant:
A. AHLSTROM CORPORATION
FIN-29600 Noormarkku (FI)
(72)
Inventors:
FREJBORG, Frey
Glens Falls, NY 12801 (US)
LAMPENIUS, Harry
SF-48600 Karhula (FI)
(74)
Representative:
Eitle, Werner, Dipl.-Ing., et al
Hoffmann, Eitle & Partner, Patent- und Rechtsanwälte, Postfach 81 04 20
D-81904 München
D-81904 München (DE)
(54)
A ROTATING ELEMENT FOR A SCREENING APPARATUS WITH A CONTOUR SURFACE