| 摘要 |
<p>Mechanical improvement consisting of providing with a modular configuration a pedaling system without cycle dead centers based on independent cranks that by means of links moves a power plate separated from and parallel to the bottom bracket spindle; The above mentioned modular configuration brings a substantial optimization in maintenance and after-sales jobs as well, which are the principal obstacles for the industrialization and marketing of this type of mechanisms; besides a reduction is achieved in the number of pieces, as well as considerable advantages in the industrialization and in the final price of the product; and finally, there is achieved minor friction that redounds to a major mechanical efficiency and therefore to a major sports yield for the u</p> |
