EP 4310251 A1 20240124 - RAILWAY FROG ADAPTED TO SEVERAL WHEEL PROFILES
Title (en)
RAILWAY FROG ADAPTED TO SEVERAL WHEEL PROFILES
Title (de)
EISENBAHNFROSCH, ANGEPASST AN VERSCHIEDENE RADPROFILE
Title (fr)
GRENOUILLE DE CHEMIN DE FER ADAPTÉE À PLUSIEURS PROFILS DE ROUES
Publication
Application
Priority
EP 22315158 A 20220719
Abstract (en)
Railway frog (1) having two wing rails (2) positioned on both sides of a nose (3), the wing rails (2) being separated with respect to the nose (3) by respective crossing flangeways (4), wherein according to a plane in section essentially perpendicular to the axis of flangeways (4), the plane in section being positioned in the area of the nose (3), the upper rolling surface of at least one of the wing rails (2) is higher than the upper surface of the tip (31) of the nose (3) and lower than the upper surface of the end of the nose (3) topping, this upper rolling surface of the wing rail (2) corresponding to an area wherein the rolling wheel is transferred from the wing rail (2) to the nose (3) of the frog (1).
IPC 8 full level
E01B 7/10 (2006.01)
CPC (source: EP)
E01B 7/10 (2013.01)
Citation (search report)
- [A] CN 104975542 A 20151014 - CHINA RAILWAY BAOJI BRIDGE GROUP CO LTD
- [A] EP 1873310 A2 20080102 - DB NETZ AG [DE]
- [A] US 5531409 A 19960702 - WILLOW ROBERT E [US]
Designated contracting state (EPC)
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 state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
DOCDB simple family (application)
EP 22315158 A 20220719; IL 30429723 A 20230706