Other than the spiral flexures that NASA uses this seems to be rather unique in that shock is absorbed in two dimensions rather than one. No matter from what d

Other than the spiral flexures that NASA uses this seems to be rather unique in that shock is absorbed in two dimensions rather than one. No matter from what direction jerk is applied the wheel will absorb it in the same or a similar direction rather than just absorbing the vector component that is along the direction of a linear shock absorber. That means it will absorb more of the shock and be more comfortable. If people know of another mechanism that has this characteristic I'd love to know about it.