Patent ID: 9242744
Filing Date: 2016-01-26
CPC Classification: B25J,B64G,E05D,Y10T

Claim Text:
1. A motorization device, comprising: two winding cylinders being substantially parallel; a winding means for forming a longitudinal link element being capable of maintaining a predetermined distance between the two winding cylinders and being wound around the two winding cylinders, and having a crossover point between two substantially linear sections of the winding means situated between the two winding cylinders; a flexible track being fixed to each of the two winding cylinders, each of the two winding cylinders and a respective flexible track defining a fitting, the flexible tracks being arranged facing one another and having a point of contact, a prestressing force being applied at said point of contact of the flexible tracks under an effect of the winding means, the flexible tracks having a spiral form being configured in such a way that the point of contact between the flexible tracks is offset relative to the crossover point of the winding means, the point of contact and the crossover point not being aligned on a same axis parallel to axes of revolution of the two winding cylinders, such that a torque dependent on a distance between the point of contact and the crossover point is applied, the torque being able to provoke mutual rotation of the fittings, wherein each of the two winding cylinders has a first circumference over a determined first portion and a second circumference over a determined second portion, wherein the first circumference is different than the second circumference, and wherein each of the two substantially linear sections of the winding means is wound on a determined first portion of a respective one of the two winding cylinders and on a determined second portion of a respective other of the two winding cylinders.