Global patent index - EP 0971825 A1

EP 0971825 A1 2000-01-19 - METHOD FOR IMPROVING THE PROPERTIES OF RAILWAY WHEELS AND RAILWAY WHEEL

Title (en)

METHOD FOR IMPROVING THE PROPERTIES OF RAILWAY WHEELS AND RAILWAY WHEEL

Title (de)

VERFAHREN ZUR VERBESSERUNG VON EIGENSCHAFTEN VON EISENBAHNRÄDERN UND EIN SOLCHES EISENBAHNRAD

Title (fr)

PROCEDE D'AMELIORATION DES PROPRIETES DES ROUES POUR VOIES FERROVIAIRES ET ROUE CORRESPONDANTE

Publication

EP 0971825 A1 (EN)

Application

EP 98914206 A

Priority

  • SE 9800586 W
  • SE 9701173 A

Abstract (en)

[origin: WO9843834A1] The present invention relates to a railway wheel and a method for improving the properties of railway wheels (1). According to this method portions of the base material (2) of the railway wheel (1) are removed and replaced by completing surface layers (16, 17) which are provided by forming a melt on said portions of the base material (2), preferably by laser radiation, and by adding additive to said melt for imparting additional properties to the completing surface layers (16, 17) besides the properties imparted thereto by the base material (2).

IPC 1-7 (main, further and additional classification)

B60B 17/00

IPC 8 full level (invention and additional information)

B23P 6/00 (2006.01); B60B 17/00 (2006.01); C21D 9/34 (2006.01); B23K 35/32 (2006.01); C21D 1/09 (2006.01)

CPC (invention and additional information)

B60B 17/0006 (2013.01); B23P 6/00 (2013.01); C21D 9/34 (2013.01); B23K 35/327 (2013.01); C21D 1/09 (2013.01)

Citation (search report)

See references of WO 9843834A1

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB GR IE IT LI NL PT SE

EPO simple patent family

WO 9843834 A1 19981008; AU 6861398 A 19981022; BR 9808634 A 20000516; EP 0971825 A1 20000119; JP 2001517177 A 20011002; SE 511411 C2 19990927; SE 9701173 D0 19970401; SE 9701173 L 19981002

INPADOC legal status

2003-03-05 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20020828

2001-11-14 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20010926

2000-01-19 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19991012

2000-01-19 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH DE DK ES FI FR GB GR IE IT LI NL PT SE