Clearance height control system

Claim 1

A CLEARANCE HEIGHT CONTROL SYSTEM TO MAINTAIN AN ESTABLISHED CLEARANCE HEIGHT BETWEEN THE SPRUNG MASS AND THE UNSPRUNG MASS OF A VEHICLE, COMPRISING, FLUID SPRING MEANS BETWEEN THE SPRUNG MASS AND THE UNSPRUNG MASS OF A VEHICLE PRESSURIZATION OF WHICH MAINTAINS AN ESTABLISHED CLEARANCE HEIGHT THEREBETWEEN, AN ELECTRICALLY OPERATED FLUID PRESSURE GENERATING COMPRESSOR PROVIDING PRESSURIZED FLUID SUPPLY FOR SAID SPRING MEANS, A CLEARANCE HEIGHT CONTROL MECHANISM PROVIDING FOR A FREE FLOW OF PRESSURIZED FLUID FLOW TO SAID FLUID SPRING FROM SAID COMPRESSOR AND A VALVED EXHAUST OF FLUID FROM SAID FLUID SPRING, SAID MECHANISM INCLUDING ELECTRIC SWITCH MEANS IN ELECTRIC CIRCUIT WITH SAID COMPRESSOR AND ACTUATED BY DECREASING CLEARANCE HEIGHT FROM AN ESTABLISHED CLEARANCE HEIGHT TO CLOSE SAID SWITCH TO ENERGIZE SAID COMPRESSOR MEANS FOR FLUID PRESSURE SUPPLY TO SAID FLUID SPRING UNTIL SAID SWITCH OPENS AND INCLUDING MECHANICALLY OPERATED VALVE MEANS ACTUATED BY INCREASING CLEARANCE HEIGHT FROM THE ESTABLISHED CLEARANCE HEIGHT TO OPEN SAID VALVE MEANS FOR EXHAUST OF FLUID FROM SAID FLUID SPRING.