Automatic braking pressure proportioner for vehicles

Claim 1

A BRAKE AND SUSPENSION SYSTEM OF A WHEELED VEHICLE RESPONSIVE TO THE LOAD ON THE GROUND WHEELS COMPRISING, IN COMBINATION, A HYDRO-PNEUMATIC DIFFERENTIAL PISTON SPRING ON EACH WHEEL, SAID PISTON HAVING TWO COUNTERACTING PISTON AREAS OF DIFFERENT SIZES AND DEFINING A LARGER DIFFERENTIAL PISTON CHAMBER AND A SMALLER DIFFERENTIAL PISTON CHAMBER, RESPECTIVELY, THE LARGER PISTON CHAMBER OF A SPRING ON ONE SIDE OF THE VEHICLE COMMUNICATING WITH THE SMALLER PISTON CHAMBER OF A SECOND, SIMILAR SPRING ON THE OTHER SIDE OF THE VEHICLE AND THE SMALLER PISTON CHAMBER OF SAID SPRING ON SAID ONE SIDE OF THE VEHICLE COMMUNICATING WITH THE LARGER PISTON CHAMBER OF SAID SECOND SPRING ON SAID OTHER SIDE OF THE VEHICLE; AND A BRAKING DEVICE INCLUDING BRAKING MEANS ON EACH WHEEL OPERATED BY A FLUID UNDER PRESSURE; MEANS TO CONTROL THE BRAKING ACTION OF THE SYSTEM AND COMPRISING FOR EACH WHEEL A MEMBER ADAPTED TO BE ACTUATED BY THE PRESSURE OF THE DIFFERENTIAL PISTON SPRING AND A MEMBER TO BE ACTUATED BY THE BRAKING PRESSURE OF SAID FLUID; A BALANCING DEVICE COMPRISING LEVER THE ENDS OF WHICH BEING IN CONTACT WITH SAID SPRING PRESSURE ACTUATED MEMBER AND SAID BRAKING PRESSURE ACTUATED MEMBER, RESPECTIVELY; AN ACTUATING MEANS FOR ADJUSTING THE LEVER RATIO OF SAID BALANCING LEVER; AND A BRAKING PRESSURE CONTROL MEMBER ADAPTED TO BE ACTED UPON BY SAID BALANCING DEVICE; SAID SPRING PRESSURE ACTUATED MEMBER CONSISTING OF A DIFFERENTIAL PISTON HAVING COUNTERACTING PISTON AREAS THE DIAMETER RATIO OF WHICH EQUALS THE DIAMETER RATIO OF THE DIFFERENTIAL PISTON SPRING OF THE APPERTAINING WHEEL; THE LARGER PISTON CHAMBERS OF THE SPRING PRESSURE-ACTUATED MEMBER AND OF THE DIFFERENTIAL PISTON SPRING COMMUNICATING WITH EACH OTHER; WHEREAS THEIR SMALLER PISTON CHAMBER ALSO COMMUNICATE WITH EACH OTHER.