(19)
(11)
EP 0 046 750 A1
(12)
(43)
Date of publication:
10.03.1982
Bulletin 1982/10
(21)
Application number:
80901245.0
(22)
Date of filing:
28.01.1980
(51)
International Patent Classification (IPC):
B21D
13/
02
( . )
B21D
53/
04
( . )
B21D
53/
02
( . )
(86)
International application number:
PCT/US1980/000082
(87)
International publication number:
WO 1981/002121
(
06.08.1981
Gazette 1981/19)
(84)
Designated Contracting States:
DE GB SE
(71)
Applicant:
CATERPILLAR TRACTOR CO.
Peoria, Illinois 61629 (US)
(72)
Inventor:
BAILEY, John M.
Dunlap, IL 61525 (US)
(74)
Representative:
Brunner, Michael John, et al
GILL JENNINGS & EVERY Broadgate House 7 Eldon Street
London EC2M 7LH
London EC2M 7LH (GB)
(54)
METHOD AND APPARATUS FOR FLATTENING CORRUGATED HEAT EXCHANGER PLATES