(19)
(11) EP 4 121 230 A1

(12)

(43) Date of publication:
25.01.2023 Bulletin 2023/04

(21) Application number: 21717528.0

(22) Date of filing: 18.03.2021
(51) International Patent Classification (IPC): 
B21J 5/08(2006.01)
B21K 1/06(2006.01)
 B21J 13/02(2006.01)
B21K 21/12(2006.01)
(52) Cooperative Patent Classification (CPC):
B21J 5/08; B21K 1/063; B21K 21/12; B21J 13/025
(86) International application number:
PCT/IB2021/052276
(87) International publication number:
WO 2021/186386 (23.09.2021 Gazette 2021/38)
(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: 18.03.2020 IN 202031011795

(71) Applicant: Tata Steel Limited
Jamshedpur, Jharkhand 831001 (IN)

(72) Inventors:
  • LAKSHMIKANT, Pala
    Jamshedpur, Jharkhand 831 001 (IN)
  • KALUBHAI BHARODIYA, Vishal
    Jamshedpur, Jharkhand 831 001 (IN)
  • VINAY SANJAY, Gujre
    Jamshedpur, Jharkhand 831 001 (IN)
  • VERMA, Rahul Kumar
    Jamshedpur, Jharkhand 831 001 (IN)

(74) Representative: Faraldi, Marco et al
Studio Torta S.p.A. Via Viotti, 9
10121 Torino
10121 Torino (IT)

   


(54) A MANDREL ASSEMBLY FOR THICKENING BRIM PORTIONS IN AN INNER SURFACE OF A TUBE