(19)
(11) EP 3 924 116 A1

(12)

(43) Date of publication:
22.12.2021 Bulletin 2021/51

(21) Application number: 20756349.5

(22) Date of filing: 04.02.2020
(51) International Patent Classification (IPC): 
B21D 22/02(2006.01)
B21D 53/88(2006.01)
 B21D 37/16(2006.01)
C21D 1/34(2006.01)
(52) Cooperative Patent Classification (CPC):
B21D 53/88; B21D 37/16; C21D 1/34; C21D 7/13; B21D 22/208
(86) International application number:
PCT/IB2020/050886
(87) International publication number:
WO 2020/165693 (20.08.2020 Gazette 2020/34)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(30) Priority: 13.02.2019 US 201962805232 P

(71) Applicant: MAGNA INTERNATIONAL INC
Aurora, Ontario L4G 7K1 (CA)

(72) Inventors:
  • FAIRBARN, Kyle Daniel
    Lefroy, Ontario L0L 1W0 (CA)
  • POLSONI, David Camil
    Woodbridge, Ontario L4H 3R9 (CA)
  • SHUMAN, Leslie George
    Smithville, Ontario L0R 2A0 (CA)

(74) Representative: Grünecker Patent- und Rechtsanwälte PartG mbB 
Leopoldstraße 4
80802 München
80802 München (DE)

   


(54) METHOD AND SYSTEM FOR USING AIR GAPS IN HOT-STAMPING TOOLS TO FORM TAILOR TEMPERED PROPERTIES