Inner tube

A wheel inner tube for complete mounting on a rim, comprising:

• a first tube having a uniform cross section of a first outer diameter, a first inner diameter, and first and second ends;
• a second tube having a uniform cross section of the first outer and inner diameters and third and fourth ends, the third end of the second tube having been vulcanization bonded axially edge-to-edge against the first end of the first tube, and a first end cap having the first outer and inner diameters attached to the fourth end of the of the second tube, the first end cap having a circular end plate;
• a third tube having a uniform cross section of the first outer and inner diameters and fifth and sixth ends, the fifth end of the third tube having been vulcanization bonded axially, edge-to-edge against the second end of the first tube and a second end cap having the first outer and inner diameters attached over the sixth end of the of the third tube, the second end cap having an end plate;
• and
• the first end cap joining the second end cap to form the circular inner tube of uniform cross section of the first outer diameter, the first inner diameter and no overlapping in the radial direction of the tube leading to increased material thickness.