Airtight coaxial hub to regulate the internal pressure of tyres even when the vehicle is riding

摘要

The device has a fixed axle housing (20), a rotary axle body (16) and a first chamber (18) enclosing the axle body with a bounding wall (50) rotating with the axle body with a rotary leadthrough (27). The leadthrough has a fixed concentric rim (38) on the axle body and an annular disk (42) extending radially beyond and concentrically overlapping the rim, which is axially movable to form an opening cross-section between rim and disk.