(19)
(11)
EP 0 353 231 A1
(12)
(43)
Date of publication:
07.02.1990
Bulletin 1990/06
(21)
Application number:
88902665.0
(22)
Date of filing:
22.02.1988
(51)
International Patent Classification (IPC):
B21D
31/
00
( . )
B21J
13/
02
( . )
B21K
23/
04
( . )
B21J
5/
02
( . )
B21K
1/
28
( . )
(86)
International application number:
PCT/US1988/000484
(87)
International publication number:
WO 1988/006931
(
22.09.1988
Gazette 1988/21)
(84)
Designated Contracting States:
BE DE FR GB IT
(30)
Priority:
13.03.1987
FR 19870003438
(71)
Applicant:
CATERPILLAR INC.
Peoria Illinois 61629-6490 (US)
(72)
Inventor:
GARCIA, René, Vincent, Hyacinthe
F-38660 Le Touvet (FR)
(74)
Representative:
Wagner, Karl H.
WAGNER & GEYER Patentanwälte Gewürzmühlstrasse 5
D-80538 München
D-80538 München (DE)
(54)
PROCESS AND APPARATUS FOR FORGING ONE PIECE TRACK ROLLER RIM