(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