(19)
(11) EP 4 739 842 A1

(12)

(43) Date of publication:
13.05.2026 Bulletin 2026/20

(21) Application number: 25705391.8

(22) Date of filing: 11.01.2025
(51) International Patent Classification (IPC): 
E01B 9/48(2006.01)
(52) Cooperative Patent Classification (CPC):
E01B 9/303
(86) International application number:
PCT/US2025/011307
(87) International publication number:
WO 2025/165555 (07.08.2025 Gazette 2025/32)
(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA
Designated Validation States:
GE KH MA MD TN

(30) Priority: 31.01.2024 US 202463627623 P

(71) Applicants:
  • voestalpine Railway Systems GmbH
    8700 Leoben (AT)
  • VOESTALPINE RAILWAY SYSTEMS NORTRAK LLC
    Sheridan, WY 82801 (US)

(72) Inventors:
  • QUIROS OROZCO, Ricardo Jose
    Sheridan, Wyoming 82801 (US)
  • NIELSEN, Chase W.
    Sheridan, Wyoming 82801 (US)
  • STOUT, John Barry
    Sheridan, Wyoming 82801 (US)

(74) Representative: Gill Jennings & Every LLP 
The Broadgate Tower 20 Primrose Street
London EC2A 2ES
London EC2A 2ES (GB)

   


(54) RAILWAY TIE FASTENING SYSTEM