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US 12,680,234 B2Granted
Anti-wiggle clip shoulder for rail fastener
AssigneeProgress Rail Services Corporation
InventorEdward Constantine
Life of this patent
Estimating the term…
Abstract
A direct fixation track rail fastener includes a first clip shoulder and a second clip shoulder each having a clip tunnel formed therein. Each clip tunnel is formed in part by a plurality of clip contact faces defining a first prong contact line and a second prong contact line for a prong of a rail clip. The configuration of multiple line contacts prevents undesired displacement of a rail clip during service.
Claims20
A direct fixation track rail fastener comprising:
- a fastener body including a first clip shoulder, a second clip shoulder, and a rail plate having an upward facing rail contact surface positioned laterally between the first clip shoulder and the second clip shoulder and extending in a fore-aft direction between a fastener body forward edge and a fastener body back edge;
- and
- the first clip shoulder and the second clip shoulder including a first clip tunnel and a second clip tunnel, respectively, each formed in part by a plurality of clip contact faces, finite in number, oriented to react an upward clamp load from a rail clip prong, defining a first prong contact line and a second prong contact line each extending in the fore-aft direction, and the plurality of clip contact faces are planar, or convex to the respective clip tunnel.
A track rail fastener comprising:
- a fastener body including a lower, substrate-facing side, and an upper side, and including a heel support surface upon the upper side extending in a fore-aft direction between a fastener body forward edge and a fastener body back edge, and in a lateral direction between a clip shoulder and a fastener body lateral edge;
- the clip shoulder including a clip tunnel extending in the fore-aft direction, and formed in part by a plurality of clip contact faces;
- the plurality of clip contact faces defining a first prong contact line and a second prong contact line on a cylinder extending in the fore-aft direction through the clip tunnel;
- and
- the first prong contact line and the second prong contact line together defining an upwardly opening angle having a vertex at an axis of the cylinder, and the upwardly opening angle is symmetric about a vertical plane defined through the clip shoulder.
2 more elements
A direct fixation track rail fastener comprising:
- a rail plate including a lower, substrate facing side, an upper side, a clip shoulder having a clip tunnel formed therein to receive a prong of a rail clip, and a heel support surface adjacent to the clip shoulder;
- the clip tunnel includes a floor, a plurality of clip contact faces, finite in number, located vertically above the floor and defining a first prong contact line and a second prong contact line extending through the clip tunnel, and a first side surface and a second side surface both extending from the floor to a respective one of the plurality of clip contact faces;
- wherein the first prong contact line and the second prong contact line define a cylinder extending in a fore-aft direction through the clip tunnel and are located less than 180° apart on the cylinder;
- and
- the plurality of clip contact faces are planar or convex to the clip tunnel.
2 more elements
Dependencies are inferred from the claim text.