Fail-safe railroad-highway grade crossing protection system

Fail-safe solid state highway crossing protection apparatus

Fail-safe speed control system for railroad trains

Fail-safe stop arrangement for crane boom extension cable

Fail-safe valve assembly for power chuck motors and the like

Fail-safe voltage level detector

Fail-safe wheel service brake system

Fail-safe, weight-responsive skate retarder

Failed nozzle relief for a mechanically sealed refueling...

Failsafe actuator

Failsafe cab signal process for high voltage pulsating...

Failsafe drive-by-wire engine controller

Failsafe electronic braking system for trains

Failsafe shooting pot actuator for an injection molding machine

Failsafe smart bar actuator

Failsafe train vehicle control signal threshold detector...

Failsafe watercraft lift with convertible leveling system

Failsafe wheel slip control system and method of operating same

Failure detecting device for elevator drive power source and...

Failure detecting system for stop-lamp circuit