Patent ID: 7431248

Claim:
A device for adjusting the attitude of an object and supporting the object onto a ground surface, said device being usable with a fluid, said device comprising: at least three supports, each support being provided for supporting at least in part the object, each support including a sleeve; a piston mounted for reciprocating movement within said sleeve so as to be movable between a retracted position and an extended position; said sleeve and said piston together defining a support chamber, said support chamber being fillable with said fluid, said support chamber defining a support chamber volume, said support chamber volume being larger when said piston is in said extended position than when said piston is in said retracted position; at least one of said sleeve and said piston defining a ground contacting surface for supporting said support onto the ground surface; and a primary valve in fluid communication with said at least three supports, said primary valve being operable between an open configuration and a closed configuration, wherein in said open configuration, said primary valve allows a flow of the fluid through said valve so that the fluid is allowed to flow simultaneously between said support chambers of said at least three supports, and in said closed configuration, said primary valve prevents the fluid from moving through said valve so that the fluid is prevented from moving between said support chambers of said at least three supports, said primary valve including a valve body having a valve internal chamber, said valve internal chamber being in fluid communication with said support chambers; and a flow controlling member mounted at least in part into said valve internal chamber, said flow controlling member including a flow controlling member outer surface, a flow controlling member chamber located thereinto and at least three flow controlling apertures extending between said flow controlling member outer surface and said flow controlling member chamber; wherein said flow controlling member is movable between an open position wherein said flow controlling apertures are each in fluid communication with a respective one of said support chambers, thereby allowing the fluid to flow into and out from said flow controlling member chamber, and in said closed position, said flow controlling member prevents said fluid from flowing into and out from said flow controlling member chamber.