Apparatus for bicycle

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 brace member attached at one end to the rigid support frame and extending forwardly and upwardly relative to the rearward portion of the rigid support frame, the forward end of the brace member attachable to the bicycle frame;
• a rear member comprising a rearward end and a forward end attached to the rearward portion of the rigid 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.

An apparatus attachable to a bicycle having a frame supporting 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 proximal end and a distal end, the distal end of the rigid support frame attachable to the bicycle frame;
• an elongated platform attached to the proximal end of the rigid support frame such that a portion of the platform extends substantially transversely on each side of the longitudinal axis of the bicycle frame;
• and
• a plurality of wheels operatively connected to the platform such that at least one wheel is positioned on both of the portions of the platform and substantially spaced from the longitudinal axis of the bicycle frame, and such that the wheels rotate in parallel with the front and rear wheels of the bicycle,
• wherein the wheels are 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 wheels engage 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.

A bicycle comprising:

• 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;
• 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 brace member attached at one end to the rigid support frame and extending forwardly and upwardly relative to the rearward portion of the rigid support frame, the forward end of the brace member attached to the bicycle frame;
• a rear member comprising a rearward end and a forward end attached to the rearward portion of the rigid 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.

A bicycle comprising:

• a frame supporting 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;
• a rigid support frame comprising a proximal end and a distal end, the distal end of the rigid support frame attached to the bicycle frame;
• an elongated platform attached to the proximal end of the rigid support frame such that a portion of the platform extends substantially transversely on each side of the longitudinal axis of the bicycle frame;
• and
• a plurality of wheels operatively connected to the platform such that at least one wheel is positioned on both of the portions of the platform and substantially spaced from the longitudinal axis of the bicycle frame, and such that the wheels rotate in parallel with the front and rear wheels of the bicycle,
• wherein the wheels are 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 wheels engage 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.