Patent ID: 7607740

Claim:
A wheel assembly for a vehicle, the assembly comprising: a wheel rim adapted to support a tire; a first support plate mounted to said rim; a second support plate for mounting to an axle; at least one first coupling device, connected between said first and second support plates, for transferring torque between said first and second support plates and, when said first coupling device is engaged with said first and second support plates, prevention of radial displacement of the first support plate relative to the second support plate is independent of said at least one first coupling device; and at least one second coupling device, connected between said first and second support plates, for securing said first and second support plates together, said second coupling device preventing radial displacement of said first support plate relative to said second support plate; wherein when radial forces exceed a predetermined level the or each said second coupling device is incapable of transferring said radial forces from said first support plate to said second support plate and the or each second coupling device enables removal of the wheel rim and said first support plate from said second support plate.