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US 8,905,322 B2Granted
Railway rail pad
AssigneePandrol Limited
InventorsStephen John Cox, Robert John Hamilton, Christopher Gardner
Life of this patent
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AssigneePandrol Limited
InventorsStephen John Cox, Robert John Hamilton, Christopher Gardner
Estimating the term…
A railway rail pad (1), for use beneath a railway rail in a rail fastening assembly as cushioning and/or electrical insulation, has first and second major faces (2, 3), the first face (2) having a rail seat portion (20) on which a foot of a railway rail sits when the pad (1) is in use, and side members (4A, 4B) attached to and extending from two opposite edges of the first face (2) of the pad (1). The side members (4A, 4B) are arranged so as to be located on respective opposite sides of the railway rail when the pad (1) is in use such that the rail seat portion (20) of the pad (1) lies between respective inwardly-facing wall faces (41A, 41B) of the said side members (4A, 4B). When the pad (1) is not under load and is placed so as to rest on a surface with the first face (2) of the pad (1) uppermost and part of the surface lying beneath the rail seat portion of the pad, an inclination angle (α1, α2) between the wall face (41A, 41B) of each side member (4A, 4B) and that part of the surface beneath the rail seat portion on which the pad (1) is resting is greater than 90°. When the pad is not under load, the first face is substantially convex in a vertical plane that is perpendicular to the longitudinal axis of the rail when the pad is in use.
A railway rail pad for use beneath a railway rail in a rail fastening assembly as cushioning and/or electrical insulation, wherein the pad has first and second major faces, wherein one or both faces comprise protrusions or depressions or mixtures thereof, the first face having a rail seat portion on which a foot of a railway rail sits when the pad is in use, and side members attached to and extending from the first face of the pad on two opposite sides of the rail seat portion, wherein the side members are arranged so as to be located on respective opposite sides of the railway rail when the pad is in use such that the rail seat portion of the pad lies between respective inwardly-facing wall faces of the side members;
A railway rail pad for use beneath a railway rail in a rail fastening assembly as cushioning and/or electrical insulation, wherein the pad has a rail seat portion on which a foot of a railway rail sits when the pad is in use and side members attached to and extending from a first major face of the pad on two opposite sides of the rail seat portion, wherein the side members are arranged so as to be located on respective opposite sides of the railway rail when the pad is in use such that the rail seat portion of the pad lies between respective inwardly-facing wall faces of the side members;
A railway rail pad for use beneath a railway rail in a rail fastening assembly as cushioning and/or electrical insulation, wherein the pad has a rail seat portion on which a foot of a railway rail sits when the pad is in use and side members attached to and extending from a first major face of the pad on two opposite sides of the rail seat portion, wherein the side members are arranged so as to be located on respective opposite sides of the railway rail when the pad is in use such that the rail seat portion of the pad lies between respective inwardly-facing wall faces of the side members;
A railway rail pad for use beneath a railway rail in a rail fastening assembly as cushioning or electrical insulation, wherein the pad has a first major side and a second major side opposite to the first major side, the second major side being adapted to contact a rail foundation when the pad is in use beneath a railway rail;
Dependencies are inferred from the claim text.