Variable compaction

Claim 1

IN A COMPACTOR HAVING A FRAMEWORK, SAID FRAMEWORK BEING ADAPTED TO CARRY SUFFICIENT BALLAST FOR COMPACTION, FRONT AND REAR SETS OF WHEELS, SAID FRONT AND REAR SETS EACH INCLUDING A PLURALITY OF GENERALLY COAXIAL WHEELS, A RESILIENT AIR INFLATABLE TIRE ON EACH WHEEL, MEANS ON SAID FRAMEWORK ROTATABLY SUPPORTING THE WHEELS, THE WHEELS OF ONE OF SAID SETS BEING PIVOTALLY MOUNTED FOR UP AND DOWN MOVEMENT RELATIVE TO SAID FRAME WHEREBY THE LOAD CARRIED BY THE TIRES OF SAID ONE SET WILL TEND TO BE EVENLY DISTRIBUTED THEREBETWEEN WHEN SAID COMPACTOR TRAVELS OVER UNEVEN GROUND, ADJACENT TIRES IN EACH SET BEING SPACED AXIALLY RELATIVELY CLOSELY TOGETHER, AIR COMPRESSOR MEANS ON SAID COMPACTOR INCLUDING AN ACCUMULATOR, MANUALLY ACTUATED VALVE MEANS COMMUNICATIVELY CONNECTED TO THE ACCUMULATOR, PRESSURE DIFFERENTIAL ACTUATED VALVE MEANS COMMUNICATIVELY CONNECTED BETWEEN EACH OF SAID WHEELS AND SAID VALVE MEANS, SAID PRESSURE DIFFERENTIAL ACTUATED VALVE MEANS ALSO COMMUNICATING WITH THE ATMOSPHERE AND A MOVABLE VALVE ELEMENT IN EACH OF SAID PRESSURE DIFFERENTIAL ACTUATED VALVE MEANS ADAPTED TO MOVE BETWEEN A FIRST SEATED POSITION SEALING SAID COMMUNICATION WITH SAID ATMOSPHERE AND A SECOND SEATED POSITION SEALING SAID COMMUNICATION WITH SAID VALVE MEANS TO ALLOW THE ESCAPE OF AIR FROM SAID WHEEL THROUGH SAID COMMUNICATION WITH ATMOSPHERE WHEN THE PRESSURE OF SAID WHEEL IS ABOVE THE PRESSURE AT SAID VALVE MEANS, A ROTARY SEAL ON EACH WHEEL INCLUDING DUCT MEANS COMMUNICATIVELY COUPLING THE SEAL TO THE RESPECTIVE TIRES AND A DUCT MEANS COMMUNICATIVELY CONNECTING EACH SEAL AND EACH RESPECTIVE PRESSURE ACTUATED VALVE MEANS SUCH THAT THE MANUALLY ACTUATED VALVE IS OPERATIVE TO CONTROL THE GROUND ENGAGING AREA ON ALL OF THE TIRES.