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1. (WO2018045225) AIRLESS TIRE
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THE FOLLOWING IS CLAIMED:

1. An airless tire that is configured to roll across a surface, the airless tire comprising:

a hub having an opening configured to receive an axle, the hub comprising a plurality of first securing members;

a frame comprising a plurality of second securing members;

a tread configured to contact the surface, the tread secured to the frame;

a cushioning unit comprising:

an inner rim comprising a radially inner face that is connected with the hub, the inner face comprising a plurality of axially extending flanges that are received in the first securing members of the hub;

an outer rim comprising a radially outer face that is connected with the frame, the outer face comprising a plurality of axially extending flanges that are received in the second securing members of the tread; and a plurality of compression spokes configured to deflect in response to radial compression of the tire, each of the compression spokes comprising a first end coupled with the inner rim and a second end coupled with the outer rim, the second end being circumferentially offset from the first end.

2. The airless tire of Claim 1, wherein each of the compression spokes have an arc shape from a side vantage point of the tire.

3. The airless tire of Claim 1, wherein the first securing members on the hub comprise recesses.

4. The airless tire of Claim 1, wherein the second securing members on the tread comprise recesses positioned on radially inwardly-extending rims of the tread.

5. The airless tire of Claim 1, further comprising a support ring positioned radially between the tread and the frame, wherein the support ring comprises metal.

6. The airless tire of Claim 1, wherein the compression spokes have an arc radius of less than 15mm.

7. The airless tire of Claim 1, wherein the inner rim, the outer rim, and the plurality of compression spokes form a unitary body.

8. The airless tire of Claim 1, wherein the cushioning unit comprises plastic.

9. The airless tire of Claim 1, wherein the hub further comprises a plurality of radial spokes.

10. An airless tire that is configured to roll across a surface, the airless tire comprising:

a hub having a plurality of radial spokes and an opening, the opening configured to receive an axle;

a cushioning unit positioned radially outward of the hub, the cushioning unit comprising:

an inner rim comprising a radially inner face that is engaged with the hub;

an outer rim comprising a radially outer face;

a plurality of curved compression spokes configured to deflect in response to radial compression of the tire, each of the curved compression spokes extending between the inner rim and the outer rim; and a plurality of curved apertures, each of the curved apertures extending between the inner rim and the outer rim;

wherein each of the curved compression spokes is circumferentially bounded by at least two of the curved apertures;

a frame positioned radially outward of the cushioning unit, the frame engaged with the radially outer face of the outer rim of the cushioning unit; and

a tread positioned radially outward of the frame, the tread secured to the frame and configured to contact the surface.

11. The airless tire of Claim 10, wherein the frame has a substantially I-beam cross-sectional shape.

12. The airless tire of Claim 10, wherein each of the apertures extends through the entire axial width of the compression unit.

13. The airless tire of Claim 10, wherein the cushioning unit comprises plastic.

14. The airless tire of Claim 10, further comprising a support ring that is positioned radially between the tread and the frame.

15. A method of manufacturing an airless tire, the method comprising:

obtaining a hub;

forming a cushioning unit as a unitary piece, the cushioning unit comprising: an inner rim,

an outer rim; and

a curved compression spokes;

receiving the hub in the cushioning unit;

engaging securing members of the hub with corresponding securing members of the cushioning unit;

obtaining a frame;

receiving the cushioning unit in the frame;

engaging securing members of the cushioning unit with corresponding securing members of the frame; and

receiving the frame in a tread.

16. The method of Claim 15, wherein receiving the frame in the tread comprises molding the tread over the frame.

17. The method of Claim 15, wherein forming a cushioning unit as a unitary piece comprises molding the cushioning unit as a unitary piece.

18. The method of Claim 15, wherein engaging securing members of the hub with corresponding securing members of the cushioning unit comprises receiving flanges of the cushioning unit in corresponding recesses of the hub.

19. The method of Claim 15, wherein engaging securing members of the cushioning unit with corresponding securing members of the frame comprises receiving flanges of the cushioning unit in corresponding recesses of the frame.

20. The method of Claim 15, further comprising positioning a support ring between the frame and the tread.