WHEEL INCLUDING TREAD
First Claim
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1. A wheel comprising:
- an inner assembly including a rim generally formed around a hub, the rim including a cross-section having a first side, a second side generally opposite the first side, a ground-facing surface, and a hub-facing surface; and
an outer assembly comprising a material different from that of the inner assembly, the outer assembly mechanically coupled through the rim at the first and second sides of the rim, the outer assembly at least partially covering the ground-facing surface of the rim and extending below the hub-facing surface of the rim, the hub-facing surface of the rim being generally devoid of the material of the outer assembly.
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Accused Products
Abstract
Wheels and methods of making wheels are disclosed including an inner portion and a tread mechanically coupled to the inner portion. The tread may be mechanically coupled to the inner portion on an inside and an outside of the wheel. The inner portion may include a rim including a plurality of apertures. The inner portion may be high density polyethylene and the tread may be thermoplastic elastomer.
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Citations
38 Claims
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1. A wheel comprising:
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an inner assembly including a rim generally formed around a hub, the rim including a cross-section having a first side, a second side generally opposite the first side, a ground-facing surface, and a hub-facing surface; and an outer assembly comprising a material different from that of the inner assembly, the outer assembly mechanically coupled through the rim at the first and second sides of the rim, the outer assembly at least partially covering the ground-facing surface of the rim and extending below the hub-facing surface of the rim, the hub-facing surface of the rim being generally devoid of the material of the outer assembly. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method of manufacturing a wheel, the method comprising:
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molding a first material into a first part of the wheel, the first part comprising a hub and a rim, the rim including a cross-section having a first side, a second side generally opposite the first side, a ground-facing surface, and a hub-facing surface; molding a second material into a second part of the wheel, wherein molding the second material comprises mechanically coupling the second part of the wheel through the rim at the first and second sides of the rim, wherein, after molding the second material, the second material at least partially covers the ground-facing surface of the rim, the second material extends below the hub-facing surface of the rim, and the hub-facing surface of the rim is generally devoid of the second material. - View Dependent Claims (23, 24, 25)
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26. A wheel comprising:
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an inner piece comprising high density polyethylene (HDPE); and an outer piece mechanically coupled to the inner piece, the outer piece comprising thermoplastic elastomer (TPE) or thermoplastic urethane (TPU). - View Dependent Claims (27, 28, 29)
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30. An injection-molded wheel comprising:
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a plastic inner section; and an outer section comprising a different material than the inner section, the outer section mechanically coupled to the inner section, wherein a ratio of weight of the outer section to weight of the inner section is less than about 0.5;
1. - View Dependent Claims (31, 32)
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33. A wheel comprising:
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a hub; and a rim generally formed around the hub, the rim comprising; a plurality of generally hollow features; and a flange disposed radially outward of the generally hollow features. - View Dependent Claims (34, 35, 36, 37, 38)
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Specification