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| Number | Title | Issue Date |
| 7309050 | Grooved rail core piece A grooved rail core piece including a core piece intersection area formed by intersecting grooves as an overflow area. The core piece has two construction profiles with interconnected outer fishing surfaces (22,24) extending in a longitudinal direction. In or... | 12/18/2007 |
| 6276643 | Flat and planar match system between rails and fillers to railroad turnouts and crossings The strength and reliability of railroad, track structures, such as frogs, crossings, and guardrails, is enhanced. Filler members and filler blocks are fitted in to support and strengthen the structures. The filler members and filler blocks provide better... | 08/21/2001 |
| 6266866 | Frog insert and assembly and method for making frog assembly An improved cast insert for a railway frog has two extensions extending in substantially the same direction away from the body portion of the casting and the end of each of the extensions has a cross sectional profile corresponding to the profile of the h... | 07/31/2001 |
| 6254038 | Flat and planar match system between rails and fillers to railroad turnouts and crossings The strength and reliability of railroad track structures, such as frogs, crossings, and guardrails, is enhanced. Filler members and filler blocks are fitted in to support and strengthen the structures. The filler members and filler blocks provide better ... | 07/03/2001 |
| 6119988 | Flat and planar match system between rails and fillers to railroad turnouts and crossings The strength and reliability of railroad track structures, such as frogs, crossings, and guardrails, is enhanced. Filler members and filler blocks are fitted in to support and strengthen the structures. The filler members and filler blocks provide better ... | 09/19/2000 |
| 5704570 | Welded nose rail used for crossing A nose type rail member for a crossing member applied to a turnout or wayside switch system on the ground for a train and the like, is made of high carbon steel material containing 0.70 to 0.82 wt. % of carbon. The rail member is constructed by a pair of ... | 01/06/1998 |
| 5560571 | Reversible wing insert frog A railroad trackwork railbound frog assembly having a toe point element is provided with a pair of spaced-apart wing rail elements each having a notch recess feature, a pair of reversible and interchangeable spaced-apart wing rail insert elements, usually... | 10/01/1996 |
| 5496004 | Direct support frog assembly A direct support railbound frog having a frog casting clamped between a pair of wing rails and freestanding such that all wheel loads imposed on the frog casting primarily pass directly to the bottom surface of the casting without passing through the wing... | 03/05/1996 |
| 5456430 | Frog with interchangeable insert An improved frog is provided with an interchangeable insert for a railroad turnout, such as a frog or crossing. The frog has a new modular interchangeable insert, which permits easy changing of worn pieces in situ. The insert is a solid, unitary piece of ... | 10/10/1995 |
| 5393019 | Railroad turnout frog with continuous running surface An improved railroad turnout frog with a continuous running surface is provided. The frog provides for continuous running of the rolling stock and includes a mobile point with a triangular shape. The mobile point is located in a portion of the frog which ... | 02/28/1995 |
| 5390772 | Switchable high speed frog mechanism A high speed frog including a ductile iron main pan casting having an integral straight approach runner, an integral straight exit runner, and an integral exit turnout runner, a movable runner having a pair of guide rails, an electric solenoid for rotatin... | 02/21/1995 |
