Patent · US Active

Method and arrangement to insulate rail ends

US7975933B2 · kind B2 · utility

2Cited by

11References

17Claims

0Family size

Inventors

W. Thomas Urmson, Jr. · Lijsterbesstraat, US
John M. Downey · Ashland, US
Patrick J. Boario · Vandergrift, US
John W. Mospan · Pittsburgh, US

Key dates

Filing date	Mar 14, 2006
Grant date	Jul 12, 2011
Priority date	—
Expiry date	Oct 3, 2027

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE01B11/54
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A rail joint arrangement comprises two rails. The rails have adjacent rail ends separated and thereby forming a gap. The rails have a top end containing a rail head and a bottom end. The gap is defined between the top end and the bottom end of the rails, and the width of the gap is non-uniform throughout its entire length. In addition, the rail joint arrangement comprises at least one electric insulator positioned within the gap. The rail joint arrangement is fastened together by a rail joint bar attaching the two rails together.

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