Solid tire including inner tire assembly

An improved solid tire, comprising:

• an outer tire, and an inner tire assembly including a bottom layer, a middle layer and an upper layer;
• said outertire having an opening permitting said inner tire assembly to be stuffed therein;
• said bottom layer being provided with a flat top and a curved bottom shaped in conformance with the curvature of an inner side of said outer tire so as to permit said bottom layer to be accommodated in said outer tire;
• said middle layer having an approximately rectangular cross section with two curved side edges and a flat top and a flat bottom side;
• said upper layer having a flat bottom and a curved top, a structure similar to said bottom layer but having a humped supporting protrusion provided in the curved top for registration with said opening of the outer tire;
• and
• a plurality of axially extended grooves being provided on the flat top of the bottom layer and the flat bottom of the top layer, said grooves on said flat top and said flat bottom being not disposed in alignment with each other but positioned in an alternating manner;
• wherein said bottom layer, said middle layer and said upper layer are placed consecutively inside the outer tire, with said layers in close abutment with each other so as to permit said grooves on said top layer and said bottom layer to form cushion chambers which serve as buffers to absorb shocks, the gross weight of said solid tire is thus reduced due to the provision of the grooves, and said outer tire can be protected from deterioration and aging because no secondary processing is required after the solid tire is assembled.