Safety device for detecting electrical brake failure and...
Safety device for electrical braking with permanent magnet...
Safety device for resistor braking with a resistant bipolar...
Safety floor
Scheduling and control in a power aggregation system for...
Sealed lead-acid battery tray assemblies and motive power...
Secondary power source for a light truck vehicle
Security eyes
Self-contained energy center for producing mechanical,...
Self-regulating system of high speed ground transportation...
Sequence connector assembly
Sequenced pulse width modulation method and apparatus for...
Series connected series motors for independent loads
Series parallel transition for power supply
Service braking technique for material handling electric...
Signal error detection in railroad communication system
Slip-controlled driving means for traction purpose
Slip-limiting control for rail vehicles
Smoke reduction and acceleration control for diesel-electric...
Snow removal machine