Patent ID: 7607693

Claim:
An apparatus attachable to a bicycle having a frame supporting a seat, a front wheel, and including rearwardly extending frame members forming a rear wheel axle support frame on each side of a rear wheel rotating on a rear axle, the apparatus comprising: a rigid support frame comprising a rearward portion, and a pair of spaced members integral with the rearward portion and extending forwardly for receiving the rear wheel, each of the spaced members including forward ends attachable to the rear wheel axle; a pair of angled brace members each attached at one end to the support frame and extending forwardly and upwardly relative to the rearward portion of the support frame, the forward ends of the brace members attachable to the bicycle frame; a rear member comprising a rearward end and a forward end attached to the rearward portion of the support frame; an elongated platform rigidly attached to the rearward end of the rear member such that the platform extends transversely of the longitudinal axis of the bicycle frame; and a wheel assembly comprising at least one wheel, the wheel assembly attached to the platform such that the wheel rotates in parallel with the wheels of the bicycle, wherein the wheel assembly is adapted to be out of engagement with a surface upon which the bicycle is located when the front and rear wheels of the bicycle are in contact with the surface, and wherein the wheel assembly engages the surface at a point rearward of the bicycle upon rearward rotation of the bicycle about an axis extending through the rear wheel axle by raising the front wheel of the bicycle from the surface.