Brake control system

Claim 1

A VEHICLE BRAKNG SYSTEM INCORPORATING A BRAKE ON AT LEAST ONE WHEEL OF THE VEHICLE AND INCLUDING A BOOSTER-OPERATED MASTER CYLINDER TO APPLY THE BRAKE, A RELAY VALVE TO ACTUATE SAID BOOSTER-OPERATED MASTER CYLINDER, A SENSING UNIT FOR CONTROLLING OPERATION OF SAID RELAY VALVE, A PEDAL-OPERATED MASTER CYLINDER OF ACTUATING SAID SENSING UNIT, SAID SENSING UNIT INCLUDING A HOUSING, AND AN AXIALLY MOVABLE THRUST ROD HAVING FIRST AND SEOND OPPOSITE ENDS, FLUID PRESSURE FROM SAID PEDAL-OPERATED MASTER CYLINDER ACTING ON SAID FIRST END, A FIRST LEVER AT A FIRST END ACTED UPON BY THE SECOND END OF SAID THRUST ROD, A FIXED PIVOT IN SAID HOUSING, A SECOND LEVER MOUNTED FOR ANGULAR MOVEMENT ABOUT SAID FIXED PIVOT, A PIVOTAL CONNECTION BETWEEN SAID FIRST LEVER AND SAID SECOND LEVER AND ABOUT WHICH SAID FIRST LEVER IS ANGULARLY MOVABLE, AND A VALUE FOR CONTROLLING OPERATION OF SAID RELAY VALVE ACTUATED BY ANGULAR MOVEMENT OF SAID SECOND LEVER ABOUT SAID FIXED PIVOT, MEANS SENSITIVE TO THE DECELERATION OF SAID WHEEL ADAPTED TO MOVE SAID FIRST LEVER ANGULARLY IN A DIRECTION OPPOSITE TO THAT IN WHICH IT IS MOVED BY THE FORCE APPLIED THROUGH SAID THRUST-ROD TO OPPOSE THE FORCE APPLIED TO SAID THRUST-ROD BY SAID PEDAL-OPERATED MASTER CYLINDER, AND A SPRING INTERPOSED BETWEEN SAID FIRST LEVER AND SAID SECOND LEVER TO URGE SAID FIRST LEVER AT AN END OPPOSITE TO SAID FIRST END INTO ENGAGEMENT WITH SAID DECELERATION SENSITIVE MEANS.