Snubber

Soft primary suspension system for a railway car

Solid composition stick applicator

Solid state railroad lights/gate controller

Solid-state, synchronous detector railroad track relay device

Sound barrier for passenger vehicles

Sound proofing and vibration dampening elastic connecting...

Spacing control of vehicles on a track

Span bolster arrangement with elastomeric laminated suspension

Spare brake beam having replaceable brake heads

Sparger system for discharge of bulk material from hopper cars

Speed check device for conveyor system

Speed control apparatus and method for railroad car retarders

Speed control apparatus for wheeled vehicles

Speed control for gravity operated trolleys

Speed decoding and speed error determining control apparatus...

Speed governors

Spill containment apron

Splash

Splice joint door liner panel