High-efficiency wheel product

A wheel product comprising:

• a multi-chambered pneumatic tire fixed to and rotating with a wheel hub about a wheel axis;
• the tire comprising:
• a hollow non-porous outer ring encircling the wheel hub and being radially spaced apart from the wheel hub;
• the ring comprising:
• at least one high-pressure chamber;
• the at least one high-pressure chamber encircling the wheel hub within the ring;
• the ring being restrained radially by a first porous ring restraint band and by a second porous ring restraint band;
• the ring being restrained axially by the first porous ring restraint band and by the second porous ring restraint band;
• the porous ring restraint bands preventing non-transient pressure gradients across the ring restraint bands;
• the porous ring restraints being substantially inelastic;
• the ring being fixed to the hub by a first non-porous sidewall and by a second non-porous sidewall;
• and
• the sidewalls being axially spaced apart and the sidewalls, the ring and the wheel hub enclosing the ring restraint bands within a low pressure chamber;
• a porous sidewall restraint band connecting the sidewalls medial the hub and the outer ring and within the low pressure chamber;
• the porous sidewall restraint band preventing non-transient pressure gradients across the sidewall restraint band;
• and
• the porous sidewall restraint band being substantially inelastic to limit first sidewall movement away from the second sidewall and to limit second sidewall movement away from the first sidewall.

A wheel product comprising:

• an electric hub motor,
• the hub motor having a hub driven in rotation about a motor axis;
• a multi-chambered pneumatic tire fixed to and rotating with the hub;
• the tire comprising:
• a hollow non-porous outer ring encircling the wheel hub and being radially spaced apart from the wheel hub;
• the ring comprising:
• at least one high-pressure chamber;
• the at least one high-pressure chamber encircling the wheel hub within the ring;
• the ring being restrained radially by a first porous ring restraint band and by a second porous ring restraint band;
• the ring being restrained axially by the first porous ring restraint band and by the second porous ring restraint band;
• the porous ring restraint bands preventing non-transient pressure gradients across the ring restraint bands;
• the porous ring restraints being substantially inelastic;
• the ring being fixed to the hub by a first non-porous sidewall and by a second non-porous sidewall;
• and
• the sidewalls being axially spaced apart and the sidewalls, the ring and the wheel hub enclosing the ring restraint bands within a low pressure chamber.

A wheel product comprising:

• an electric hub motor,
• the hub motor having a hub driven in rotation about a motor axis;
• a multi-chambered pneumatic tire fixed to and rotating with the hub;
• the tire comprising:
• a hollow non-porous outer ring encircling the wheel hub and being radially spaced apart from the wheel hub;
• the ring comprising:
• at least one high-pressure chamber;
• the at least one high-pressure chamber encircling the wheel hub within the ring;
• the ring being restrained radially by a first porous ring restraint band and by a second porous ring restraint band;
• the ring being restrained axially by the first porous ring restraint band and by the second porous ring restraint band;
• the porous ring restraint bands preventing non-transient pressure gradients across the ring restraint bands;
• the porous ring restraints being substantially inelastic;
• the ring being fixed to the hub by a first non-porous sidewall and by a second non-porous sidewall;
• and
• the sidewalls being axially spaced apart and the sidewalls, the ring and the wheel hub enclosing the ring restraint bands within a low pressure chamber;
• a porous sidewall restraint band connecting the sidewalls medial the hub and the outer ring and within the low pressure chamber;
• the porous sidewall restraint band preventing non-transient pressure gradients across the porous sidewall restraint band;
• and
• the porous sidewall restraint band being substantially inelastic to limit first sidewall movement away from the second sidewall and to limit second sidewall movement away from the first sidewall.