Today’s invention is a replacement for those old solid wheels and pneumatic tyres.
Imagine the frame of an umbrella used as the spokes of a car’s wheels.
A segmented (blue) wheel rim supports solid (grey) tyres.
The wheel nut can be tightened or loosened remotely, allowing the umbrella skeleton to press radially outwards or relax slightly inwards very rapidly… removing the need for a conventional suspension system.
When a quick change of tyre is required, the nut is removed and the skeleton collapsed to allow a new tyre to be fitted easily onto the wheel segments.