Dual suspension tandem master cylinder

Claim 1

A TANDEM MASTER BRAKE CYLINDER APPARATUS FOR USE WITH FIRST AND SECOND BRAKE SYSTEM, COMPRISING A CYLINDER INCLUDING FIRST AND SECOND END WALL, A BRAKE ROD EXTENDING THROUGH SAID FIRST END WALL AND ADAPTED FOR MOVEMENT IN A FORWARD DIRECTION AWAY FROM SAID SECOND WALL AND A REARWARD DIRECTION AWAY FROM SAID SECOND END WALL, A FIRST PISTON WITHIN SAID CYLINDER CONNECTED TO SAID BRAKE ROD, A FLOATING PISTON IN SAID CYLINDER DISPOSED IN THE REGION BETWEEN SAID FIRST PISTON AND SAID SECOND END WALL, THE REGION BETWEEN SAID FIRST PISTON AND SAID FLOATING PISTON WITHIN SAID CYLINDER DEFINING A FIRST FLUID CHAMBER, THE REGION BETWEEN SAID FLOATING PISTON AND SAID SECOND END WALL DEFINING A SECOND FLUID CHAMBER, A FIRST PORT IN SAID CYLINDER IN THE REGION OF SAID FIRST FLUID CHAMBER FOR CONNECTING SAID FIRST FLUID CHAMBER TO SAID FIRST BRAKE SYSTEM, A SECOND PORT IN SAID SECOND FLUID CHAMBER FOR CONNECTING SAID SECOND FLUID CHAMBER TO SAID SECOND BRAKE SYSTEM, A FIRST SUSPENSION MEANS, INCLUDING SPRING MEANS, OPERATIVELY COUPLING SAID FIRST PISTON TO SAID FLOATING PISTON, AND A SECOND SUSPENSION MEANS SUBSTANTIALLY IDENTICAL TO THE FIRST SUSPENSION MEANS AND INCLUDING SPRING MEANS OPERATIVELY COUPLING SAID FLOATING PISTON TO SAID SECOND END WALL, SAID FIRST AND SECOND SUSPENSION MEANS COOPERATING TO PREVENT REARWARD MOVEMENT OF SAID FLOATING PISTON UNTIL TO PREVENT REARWARD MOVEMENT OF SAID FLOATING PISTON POSITION AND THEN TO PERMIT MOVEMENT OF SAID FLOATING PISTON IN BOTH A FORWARD AND A REARWARD DIRECTION, SAID FIRST SUSPENSION MEANS INCLUDING A FIRST SPRING DISPOSED BETWEEN SAID FIRST PISTON AND SAID FLOATING PISTON FOR URGING THEM APART AND FIRST SLIDABLE STOP MEANS BETWEEN SAID FIRST PISTON AND SAID FLOATING PISTON FOR LIMITING THE SEPARATION THEREBETWEEN, SAID SECOND SUSPENSION MEANS INCLUDING A SECOND SPRING DISPOSED BETWEEN SAID FLOATING PISTON AND SAID SECOND END WALL FOR URGING SAID FLOATING PISTON AWAY FROM THE LATTER SAID END WALL AND SECOND SLIDABLE STOP MEANS BETWEEN SAID FLOATING PISTON AND SAID END WALL FOR LIMITING THE SEPARATION THEREBETWEEN, SAID FIRST AND SECOND STOP MEANS BEING AXIALLY ALIGNED IN SAID CYLINDER AND RESPECTIVELY ACTING ON SAID FLOATING PISTON TO MAINTAIN THE SAME IN AN INITIALLY PREESTABLISHED AND FIXED REARWARD POSITION IN THE CYLINDER.