PEDAL ASSEMBLY AND BICYCLE FRAME SPECIFICALLY FOR THE USE OF ECCENTRIC PLATES (Machine-translation by Google Translate, not legally binding)

The invention relates to a pedal assembly consisting of a special pedal axle system for bicycles that makes it possible to render the connecting rods independent from one another and synchronizes them at a transmission ratio which is changed in a sinusoidal manner so that eccentric or off-centered plates are required in order to obtain traction of a wheel by means of a chain. According to the invention, the system comprises two independent semi-axles forming the axle of the pedals, a secondary axle, four elliptical gears and an underframe coupled to or built into the frame of the bicycle. The novel pedal assembly operates combined with the traction system by means of independent synchronized pedals and can be used with two chains and eccentric plate sets or a single chain and a set of eccentric plates in conjunction with one of the connecting rods. (Machine-translation by Google Translate, not legally binding) Consiste en un sistema de eje de pedales (pedalier) especial para bicicletas, que permite independizar las bielas sincronizándolas con una relación de transmisión variable de forma senoidal, de forma que para conseguir la tracción mediante cadena a una rueda requiere el uso de platos excéntricos o descentrados. Está compuesto por: dos semiejes independientes que conforman el eje de pedales; un eje secundario; cuatro engranajes elípticos; y un subchasis acoplado o integrado en el chasis o cuadro de la bicicleta. Este nuevo pedalier funciona en combinación con el sistema tracción por pedales independientes sincronizados, y permite ser usado tanto con dos cadenas y conjuntos de platos excéntricos, como con una sola cadena y conjunto de platos excéntricos asociado a una de las bielas.