The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 06, 2012
Filed:
Mar. 01, 2011
W. Thomas Urmson, Jr., Valencia, PA (US);
John M. Downey, Ashland, KY (US);
Patrick J. Boario, Allegheny Township, PA (US);
John W. Mospan, Pittsburgh, PA (US);
W. Thomas Urmson, Jr., Valencia, PA (US);
John M. Downey, Ashland, KY (US);
Patrick J. Boario, Allegheny Township, PA (US);
John W. Mospan, Pittsburgh, PA (US);
Koppers Delaware, Inc., Wilmington, DE (US);
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.