(19)
(11) EP 3 678 800 A1

(12)

(43) Date of publication:
15.07.2020 Bulletin 2020/29

(21) Application number: 18773649.1

(22) Date of filing: 07.09.2018
(51) International Patent Classification (IPC): 
B21J 5/08(2006.01)
B21J 9/08(2006.01)
(86) International application number:
PCT/JP2018/033303
(87) International publication number:
WO 2019/050018 (14.03.2019 Gazette 2019/11)
(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: 08.09.2017 JP 2017173281
23.07.2018 JP 2018138035

(71) Applicant: Neturen Co., Ltd.
Tokyo 141-8639 (JP)

(72) Inventors:
  • KUWAHARA Yoshitaka
    Tokyo 141-8639 (JP)
  • OKAMOTO Mitsuhiro
    Tokyo 141-8639 (JP)
  • IKEDA Takashi
    Tokyo 141-8639 (JP)
  • MORI Kazuki
    Tokyo 141-8639 (JP)

(74) Representative: Zimmermann & Partner Patentanwälte mbB 
Postfach 330 920
80069 München
80069 München (DE)

   


(54) METHOD AND APPARATUS FOR SHAFT DIAMETER ENLARGEMENT