Perfect bicycle chart (Machine-translation by Google Translate, not legally binding)

摘要

Improved bicycle frame, characterized in that its main component elements are pieces that join approximately in the central area of the bicycle in the manner of an x and not in the vertices of a triangle as in conventional bicycles, constituting the upper ends of these elements the attachment points of the saddle and the steering stem, completing the frame by means of a curved rear fork, with the convexity forwards, and a curved front fork, with the convexity towards the rear, arising on the other hand from the lower part of the frame a lower fork curved downwards which joins the rear fork in a ring in whose upper part the axle of the rear wheel is fixed; all this in such a way that a highly flexible frame is obtained, with a very low center of gravity and in which the bottom bracket axis occupies an elevated position allowing the assembly of longer cranks of greater driving torque. (Machine-translation by Google Translate, not legally binding)