LandOfFree - US Patents - Listing for Railway switches and signals

Railway switches and signals – Crossings – frogs – and mates – Frogs

Frog tip that can be shifted relative to the wing rails

Railway switches and signals – Crossings – frogs – and mates – Frogs

Frog with interchangeable insert

Railway switches and signals – Cab signal or train control – Train defect

Gate circuitry for hot box detectors

Railway switches and signals – Electric automatic highway signals – mine doors – and gates

Gate monitoring system

Railway switches and signals – Switches – Frog obviating

Girder type switch track

Railway switches and signals – Electric automatic highway signals – mine doors – and gates

Grade crossing assembly

Railway switches and signals – Electric automatic highway signals – mine doors – and gates

Grade-crossing motorist warning system

Railway switches and signals – Crossings – frogs – and mates – Central inserts

Grooved rail core piece

Railway switches and signals – Switches – Sliding

Grooved rail switch with a tongue rail device

Railway switches and signals – Block-signal systems – Semi-automatic

Guard for animal transporting vehicles

Railway switches and signals – Cab signal or train control – Speed-control systems

Guided vehicle and method for use with dual mode...

Railway switches and signals – Block-signal systems – Automatic

Hall effect track circuit receiving element

Railway switches and signals – Switches – Snow protected

Heater system for railroad switch

Railway switches and signals – Switches – Snow protected

Heating cable assembly and connector for railroad switch heating

Railway switches and signals – Electric automatic highway signals – mine doors – and gates – Car-actuated controller

Highway crossing control system for railroads utilizing a commun

Railway switches and signals – Cab signal or train control – Motive-power control

Highway crossing control system for railroads utilizing a commun

Railway switches and signals – Electric automatic highway signals – mine doors – and gates – Normally open track circuit

Highway crossing system with improved ring sustain feature

Railway switches and signals – Electric automatic highway signals – mine doors – and gates – Normally open track circuit

Highway crossing system with motion detecting apparatus

Railway switches and signals – Vehicle-energy actuation – Signals and gates – automatic

Highway grade crossing vehicle violation detector