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:
Jun. 19, 2012
Filed:
Oct. 08, 2008
Stephen John Cox, Richmond, GB;
Robert John Hamilton, Woking, GB;
Stephen John Cox, Richmond, GB;
Robert John Hamilton, Woking, GB;
Pandrol Limited, Addlestone, Surrey, GB;
Abstract
In a railway rail pad having a rail seat portion for receiving a foot of a railway rail, the rail seat portion is provided on at least one major face thereof with a plurality of protrusions which are unevenly distributed across the face of the rail seat portion such that the ratio of the area of the face occupied by the protrusions to the area of the face free of protrusions is greater in an edge region of the rail seat portion than in a central region of the rail seat portion, the edge region being adjacent to one edge of the pad and the central region being adjacent to the edge region. The studs are arranged in columns, each stud being of substantially the same size, and the number of studs in a column in the central region which is closest to said edge region being greater than in a column closer to the center of the rail seat portion. The studs are also arranged in rows, wherein the ratio of protrusions to free area in a row of studs adjacent to, but spaced from, the center of the rail seat portion is greater than that in a row further from the center.