(19)
(11)
EP 0 038 857 A1
(12)
(43)
Date of publication:
04.11.1981
Bulletin 1981/44
(21)
Application number:
81900032.0
(22)
Date of filing:
03.11.1980
(51)
International Patent Classification (IPC):
B01D
21/
26
( . )
F04F
1/
10
( . )
(86)
International application number:
PCT/US1980/001466
(87)
International publication number:
WO 1981/001246
(
14.05.1981
Gazette 1981/12)
(84)
Designated Contracting States:
DE FR GB
(30)
Priority:
01.11.1979
WO 1979US00931
(71)
Applicant:
CATERPILLAR TRACTOR CO.
Peoria, Illinois 61629 (US)
(72)
Inventor:
WITZENBURG, Marion J.
Peoria, IL 61614 (US)
(74)
Representative:
Wagner, Karl H.
WAGNER & GEYER Patentanwälte Gewuerzmuehlstrasse 5 Postfach 246
D-8000 München 22
D-8000 München 22 (DE)
(54)
PUMPLESS FLOW SYSTEM FOR A CORROSIVE LIQUID