Abstract: A structural improvement of a solid tire is made up of a tire embodiment, an inner tire including a bottom layer , a middle layer and an upper layer. The bottom layer is a flat-topped curve-bottomed continual slab, the middle layer having an approximately rectangular cross section with top and bottom side thereof provided with axially parallel grooves and the right and left side defined in a smoothly curved surface. The upper layer is approximately in the same shape as the bottom layer but is additionally equipped with a humpbacked portion right on top of the curve-bottomed area. In assembly, the bottom layer is placed at the bottom of the tire embodiment and the middle layer is positioned next on top of the bottom layer, the upper layer is lastly placed on top of the middle layer. Such a structure makes the solid tire have a better buffer effect and lighter weight in use and the inner tire assembly can also be recycled for use after the tire embodiment is worn out.

Abstract: A puncture-durable tire structure has a tire body which is covered with an outer radial ply at the inner side thereof. The outer radial ply is made up of an inner layer and an outer layer that are respectively extended over the bead wires at the edges of the tire body and further extended to a middle position of a rubber side wall of the tire body. The inner side of the outer radial ply is in abutment with an airtight layer which is in turn in abutment with a leakage-proof layer. The leakage-proof layer is further covered with an inner radial ply which has an inner layer and an outer layer. The outer layer of the inner radial ply extends to a tire lip portion of the tire body and the inner layer of the inner radial ply is led over and wound around the bead wires at the tire body and further extends to the upper portion of the rubber side wall.