Patent ID: 8911025
Filing Date: 2014-12-16
Classification: B60C

Abstract:
1. A wheel, having an interlocking tire and rim, the wheel comprising: a central hub defining an annular external surface; a tread, associated to the external surface of the hub; and anchoring means extending from the annular external surface in order to constrain the tread to the hub; the anchoring means comprising at least one groove for housing at least a first portion of the tread, and a plurality of elements radially projecting from the annular external surface of the hub; the groove developing between the projecting elements and exhibiting a substantially circumferential development; a first series of projecting elements positioned adjacent to but spaced apart from a first edge of the external surface of the hub, and a second series of projecting elements, distanced from the first series and positioned adjacent to but spaced apart from a second edge of the external surface opposite the first edge; the groove being defined between the first series and the second series of projecting elements; the projecting elements of the first series being alternated with the projecting elements of the second series; the groove being arranged at a central zone of the external surface of the hub interposed between the first edge and the second edge; the first portion of the tread exhibiting an annular development such as to be housed in the groove; the first portion defining a lower surface abutting on the external surface of the hub, and an upper surface from which an annular rolling element of the tread develops; wherein the groove has a width of at least 1.5 mm, and wherein the hub is made of a thermoplastic material and in that the tread is made of polyurethane with a hardness comprised between 60 and 95 SHORE-A; the tread being injection-molded on the external surface of the hub, wherein the width of each of the first series of projecting elements is greater than the width of the groove, wherein each of the projecting elements of the second series has a shape, in lateral elevational view, wherein the projecting element has a first width where it attaches to the annular external surface of the hub, and as it extends radially from the hub, it narrows in width to define a second width which is narrower than the first width, then as it extends further radially from the hub, it broadens in width to define a third width which is greater than the second width, then again narrows in width as it radially approaches its distal end.