Patent ID: 7080847

Claim:
A portable bicycle comprising: a front frame section including a head tube, a fork, a handlebar, a stem interconnected to the handlebar and the head tube, a front wheel, and a front bar having a front end coupled to the head tube; a rear frame section including a bottom bracket, a pair of pedals coupled to the bottom bracket, a sprocket wheel coupled to the bottom bracket, a rear wheel, a chain stay extended rearward from the bottom bracket to an axle of the rear wheel, a seat stay having a rear end coupled to the axle of the rear wheel, a lower seat tube extended upwardly from the bottom bracket, an upper seat tube aligned with the lower seat tube, a seat post slidably inserted into the upper and lower seat tubes, a saddle formed on a top of the seat post, and a hollow rear bar for slidably receiving the front bar, the rear bar being intersected by the upper and lower seat tubes and having a top aperture and a bottom aperture with the upper and lower seat tubes connected thereat; and at least one fastening mechanism for securing the front bar to the rear bar; wherein the rear end of the front bar is stopped by the seat post inserted into the upper seat tube and the lower seat tube when the bicycle is in a position for riding, and the front bar is operative to project from the rear end of the rear bar after detaching the seat post; whereby detaching both the seat post and the saddle, unfastening the fastening mechanism, and sliding the front bar with respect to the rear bar to a limit will collapse the bicycle to a compact size.