Patent · US Active

Method for producing a sleeper for use in the railway track superstructure

US10774477B2 · kind B2 · utility

0Cited by

3References

15Claims

0Family size

Assignee

Vossloh-Werke GmbH · DE

Inventors

Winfried Bösterling · Neuenrade, DE
Adrian Bednarczyk · Lüdenscheid, DE
Nicolas Schröder · Dortmund, DE

Key dates

Filing date	Apr 22, 2016
Grant date	Sep 15, 2020
Priority date	—
Expiry date	Apr 22, 2036

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29L2031/06
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The invention relates to a method which enables sleepers to be produced for the railway track superstructure having optimised performance characteristics, in a reliable and cost-effective manner. The method according to the invention provides the following production steps: a) providing a mixture 10-60 % mass of which consists of a granulate of a plastic, which is deformable by applying heat, and the remainder of which consists of a sand having a bulk density of 1.4-2.0 g/cm3; b) heating the mixture to a temperature of 150-200° C.; c) pouring the mixture into a press mould reproducing the sleeper; d) pressing the mixture in the mould at a pressing pressure measured in the mixture of 1-5 MPa over a pressing period of up to 60 minutes; and e) removing the sleeper from the mould.

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