PROPULSION DEVICE FOR TWO-PLACE BICYCLES AND TWO-PLACE BICYCLES USING THE DEVICE

摘要

THE INVENTION CONCERNS A PROPULSION DEVICE APPLICABLE TO TWO-PLATED BICYCLES, COMPRISING A FRONT DRIVE COUPLE HAVING SELF-ADJUSTED WHEELS 13, 20, PLACED ON EITHER OF THE ROTATING SHAFT 33, A COUPLE OF REAR DRIVE INCLUDING THE ROTATION AXIS B COINCIDED WITH THE AXLE OF THE REAR WHEEL 8, PROVIDED WITH A WHEEL DONE 21 ON A SIDE OF THE ROTATING SHAFT, A HUB 19 REAR WHEEL HINGED WITH FREE ROTATION ON THE ROTATING SHAFT 32 OF THE REAR DRIVE TORQUE, A PINION GROUP 15 WITH FREE WHEEL MECHANISM, PROVIDED WITH ONE OR MORE SPROCKETS 16, ATTACHED TO THE HUB OF THE SIDE OPPOSED TO THAT PROVIDED WITH THE WHEEL, AND TWO CHAINS LIAISON OF WHICH ONE 34 IS PLACED BETWEEN THE TWO WHEELS GIVEN FRONT AND REAR DRIVE COUPLES OF THE DRIVE AND THE OTHER 14 BETWEEN THE WHEEL DONEE FREE OF THE FRONT DRIVE TORQUE AND A GEAR OF THE GROUP PIGNON. / P The invention also relates to a two-space bicycles equipped with the CI-D PROPULSION DEVICE. TESTS AND THE REAR SEAT 2 IS PLACED IN THE EXTENSION OF THE REAR FORK 12. / P