Hydraulic anti-skid braking system for vehicle with modulator, lever, fulcrum and degree of lost-motion

摘要

In an anti-skid modulator assembly a flywheel mechanism operates a dump valve through a lever which is adapted to pivot about a fulcrum at an intermediate point in its length. The dump valve comprises a spring normally urging a valve member into engagement with a seating. The valve member has a head at its outer end with which the lever co-operates to open the dump valve. Normally when the dump valve is closed, the lever is in engagement with the fulcrum and is spaced from the head by a degree of lost-motion.