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
Solar energy powered electric vehicle
Solid state chopper for controlling load current
Solid state motor control apparatus and method
Speed control for electrically propelled traction vehicles
Speed control system for an ac locomotive
Speed reducing control system for a polyphase electric motor