Patent · US Active

Method for covering a ballast bed with foam in a railway track system

US9822491B2 · kind B2 · utility

0Cited by

1References

10Claims

0Family size

Assignee

Covestro Deutschland AG · DE

Inventors

Torsten Erwe · Odenthal, DE
Thomas Gross · San Anselmo, US
Thomas Kleiner · Nussbaumen, CH

Key dates

Filing date	Nov 8, 2013
Grant date	Nov 21, 2017
Priority date	—
Expiry date	May 6, 2034

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE01B1/001
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A method is provided for foaming a ballast bed of a railway track wherein the railway track comprises sleepers positioned on the ballast bed and rails positioned on the sleepers, wherein the rails are covered at least in a partial area along a region of the ballast bed to be foamed, and a foaming agent is introduced into the ballast bed while the rails are covered, wherein the ballast bed has in a sleeper bay defined by two successive sleepers an upper side facing against the gravitational direction, and the ballast bed is heaped up so that the upper side of the ballast bed reaches at least up to an underneath side of the sleeper facing in the gravitational direction.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.