Constructive arrangement of a flexible wheel for wheelbarrow or manually tractioned industrial carts

A wheel constituted by a single block that comprises:

• (a) an outer ring (1) having a tread surface (15) that faces outwardly from said wheel, said tread surface (15) having a first side tread surface (12) and a second side tread surface (12a) arranged tangentially on each side of said tread surface (15);
• said first and second side tread surfaces (12,12a) have a plurality of first and second radial cavities (11,11a) are spaced around the circumference of said wheel and positioned so that said plurality of said first radial cavities (11) on said first side tread surface are not aligned opposite to said plurality of second radial cavities (11a) on said second side tread surface (12a);
• wherein said tread surface (15), that faces outwardly from said wheel, is formed into a curved rim and said first and second radial cavities (11a, 11b) are formed by three parallel, flexible edges (141, 142, 143), connected at extremities of said radial cavities (11a,11b) by two non-deforming, radial edges;
• (b) a center wall (2) comprising a flat, solid, ring-shaped wall in a central plane of said wheel where said central plane is parallel to said outer ring (1) of said wheel;
• each side of said center wall (2) having a plurality of flexible structures (14) spaced around the circumference of said wheel;
• and
• (c) said center wall (2) having an inner ring portion (3) comprising a circular wall (31), a reinforcement rim (32) and recesses with radial walls.