Unicycle

The unicycle comprising a pair of axially spaced apart disk wheels and a pair of pedal assemblies spaced apart diametrically which also serve to secure the two wheels together and make the unicycle a unitary structure, each said pedal assembly comprising:

• an elongated one-piece tie bolt having a head at one end and a threaded portion at its opposite end,
• a pair of aligned bolt receiving openings in the wheels, with the opening in the first wheel being sized to snugly receive a mid portion of a tie bolt and with the opening in the second wheel being internally threaded to mate with the threads at the end of the tie bolt;
• a tubular first inner spacer between the wheels, surrounding the tie bolt, said tubular first spacer being substantially larger in diameter than the tie bolt and presenting an edge at each of its ends;
• a second larger diameter tubular outer spacer surrounding the first tubular spacer and presenting an edge at each of its ends;
• said first and second tubular spacers being of such a length that when the tie bolt is tightened and put into tension, the tubular first spacer digs into the inner surfaces of the wheels a greater amount than the ends of the outer tubular spacer.

A unicycle comprising a pair of axially spaced apart disk wheels and a pair of pedal assemblies spaced apart diametrically which also serve to secure the two wheels together and make the unicycle a unitary structure, each said pedal assembly comprising:

• an elongated one piece tie bolt having a head at one end, a threaded portion at its opposite end,
• a pair of aligned bolt receiving openings in the wheels, with the opening in a first of the wheels being sized to snugly receive a midportion of the tie bolt and with the opening in the second wheel being internally threaded to mate with the threads at the end of the tie bolt,
• a first spacer between the wheels having means at its ends sized and shaped to dig into the wheels when the tie bolt is in tension,
• abutment means axially outwardly of the first wheel surrounding the bolt receiving opening in said wheel, said abutment means including an opening in which the tie bolt is slidably received,
• said bolt head being spaced axially outwardly from said abutment means,
• a tubular second spacer closely surrounding the tie bolt between the bolt head and the abutment means, said second tubular spacer extending axially between the bolt head and the abutment means,
• a pedal separate from said second tubular spacer surrounding said tubular second spacer, said pedal being freely rotatable about said second tubular spacer, and
• wherein the threads at the end of the bolt are of sufficient length that when the tie bolt is tightened the tie bolt is put into tension, the first spacer is put into compression between the two wheels, and the said means at the ends of the first spacer dig into the wheels, and the tubular second spacer is put into compression between the abutment menas and the bolt head, and wherein the compression of the two tubular spacers is of such a magnitude that the two wheels are secured together and the position of each to the other is fixed, by the two pedal assemblies.