Patent · US Active

Hollow sleeper

US8025241B2 · kind B2 · utility

0Cited by

8References

6Claims

0Family size

Assignee

SCHWIHAG AG · CH

Inventors

Roland Buda · Bodensee, DE
Frank Meyer · Stockach, DE

Key dates

Filing date	May 2, 2007
Grant date	Sep 27, 2011
Priority date	—
Expiry date	Dec 21, 2027

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE01B7/22
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

In the case of a hollow sleeper (1) for adjusting devices of switch blades of railway points, movable common crossings or cable crossings in any desired sections of track and points, formed as an upwardly open hollow sleeper profile with a planar sleeper underside (2), for fitting in a track skeleton, wherein the cross-sectional width and height are made to match a normal concrete, wooden or steel sleeper, the positional stability on ballast can be improved if the sleeper underside (2) of the hollow sleeper (1) is formed with at least one sunken, downwardly open chamber (5).

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