Patent ID: 8721009

Claim:
An anti-skid braking system for aircraft having a brake pedal in communication with a master cylinder and a single fluid reservoir, and a brake caliper engaged with a wheel, which system comprises: a three-port two position hydraulic valve controlled by a solenoid, wherein said hydraulic valve is in fluid communication with and between said master cylinder and said brake caliper and wherein said three-port two position hydraulic valve controls fluid flow between said master cylinder and said brake caliper; a spring loaded accumulator having an accumulator piston, said accumulator in fluid communication with and between said hydraulic valve and said brake caliper, wherein said accumulator is volume balanced such that movement of the piston pushes fluid to the master cylinder and pulls equal volumes of fluid from the brake caliper; a hydraulic pump in fluid communication with and between said hydraulic valve and said brake caliper; and a controller to control said hydraulic valve solenoid and to sense rotational speed of said wheel and ground speed of said aircraft.