EP 0835958 A3 19990428 - Grain distribution for ballast for a railway track ballast
Title (en)
Grain distribution for ballast for a railway track ballast
Title (de)
Schotterzusammensetzung für ein Eisenbahn-Gleisbett
Title (fr)
Composition granulométrique d'un ballast d'une voie ferrée
Publication
Application
Priority
DE 19641716 A 19961010
Abstract (en)
[origin: EP0835958A2] The ballast is lifted and processed to remove particles below a set minimum diameter. The mix of particle sizes in the cleaned ballast is determined and new ballast and chippings are added to obtain an optimum mix which will provide a good lateral support for the rails water drainage. The ballast mix provides more contact with the sleepers. The particle size has a minimum of 2 to 8 mm, with an absolute minimum of 2 mm. The particle size mix follows a programmed characteristic.
IPC 1-7
IPC 8 full level
E01B 1/00 (2006.01)
CPC (source: EP)
E01B 1/008 (2013.01); E01B 2204/16 (2013.01)
Citation (search report)
- [A] DE 9306779 U1 19930715
- [A] DE 4301182 A1 19940721 - MOEBIUS JOSEF BAU [DE]
- [A] PATENT ABSTRACTS OF JAPAN vol. 017, no. 417 (M - 1457) 4 August 1993 (1993-08-04)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0835958 A2 19980415; EP 0835958 A3 19990428; DE 19641716 A1 19980416
DOCDB simple family (application)
EP 97105503 A 19970403; DE 19641716 A 19961010