Full-power hydraulic braking systems
AssigneeClayton Dewandre Company Limited
InventorsWilbur Mills Page, Phillip Applewhite
Life of this patent
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Abstract
A full-power hydraulic braking system comprises two independently-powered service circuits serving separate sets of brakes, a common pedal-actuated dual brake valve controlling operation of said circuits, a spring brake actuator fed from both service circuits through separate lines and, in each of said lines, a pressure responsive protection valve operable in the event of a failure in either service circuit to cut off the spring brake actuator from that service and ensure continued operation of said actuator from the other service circuit.
Claims9
In a hydraulic braking system of the kind wherein two independently powered service circuits are connected through valve means to serve separate sets of vehicle brakes, wherein the system includes a spring brake actuator having operative connection to at least one of said sets of vehicle brakes and having fluid pressure responsive control means connected to both service circuits through separate lines each incorporating a pressure responsive protection valve, each valve being normally open when the pressure in its related service circuit exceeds a predetermined amount and being operable in the event of a failure of pressure in the associated service circuit to cut off that circuit from the spring brake actuator while the actuator continues to maintain operative connection with the other service circuit which continues to supply fluid pressure to said spring brake unit.
A hydraulic braking system of the kind in which two independently powered service circuits are connected through valve means to serve separate sets of wheel brakes, wherein the system includes a spring brake actuator fed to receive fluid pressure from both service circuits through separate control circuit lines each incorporating a pressure responsive protector valve operable in the event of a failure of pressure in the associated spring brake actuator control circuit line to cut off that control circuit line and so maintain the integrity of the two service circuits.
Dependencies are inferred from the claim text.