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Priority to ES0235044ApriorityCriticalpatent/ES235044A1/en
Publication of ES235044A1publicationCriticalpatent/ES235044A1/en
New system of synchronized propulsion, for bicycles and the like, characterized in that the cranks, 40 cm long, are coupled to two free sprockets, 60 teeth, which serve to transmit the impulse of the movement of the connecting rods to two other pinions, of 10 teeth, which are attached to two other pinions, 40 teeth that transmits to the last gear or pion that is coupled to the hub of the rear wheel and the pinion will be of minimum size, 10 or 15 teeth all the pinions, as advised by the practice for its proper functioning. (Machine-translation by Google Translate, not legally binding)
ES0235044A1957-04-241957-04-24New synchronized propulsion system for bikes and similars (Machine-translation by Google Translate, not legally binding)
ExpiredES235044A1
(en)
Improvements introduced in motor tricycles with respect to safety, suspension and inclination (Machine-translation by Google Translate, not legally binding)