Patent ID: 8191594

Claim:
A wheel and axle system for vehicles with a central tire pressure supply through a bore in a wheel axle, said wheel and axle system comprising; a first wheel component having a first mechanical valve including a valve needle head, a coaxial circumferential groove, and an axial bore defined in said first component, said circumferential groove being located at a wheel side end of said axial bore, said needle head having a spring loading-imparted blockage effect; a second wheel component having a second mechanical valve including a valve needle head, and a coaxial circumferential groove facing said circumferential groove of said first wheel component, said second mechanical valve co-acts with said first mechanical valve, said needle head of said second mechanical valve having a spring loading-imparted blockage effect; and a dynamic seal interchangeably placed in said circumferential groove of said first and second wheel components, said dynamic seal acts as a coupling member between the first and second wheel components which revolve in relation to one another; wherein said second mechanical valve being provided in said second wheel component such that, after mounting of a wheel thereon, said valve needle heads of said first and second mechanical valves mutually cancel said spring loading-imparted blockage effect of said first and second mechanical valves respectively; wherein air in a tire is in communication with a compressed air source of said vehicle.