The present invention provides a propulsion apparatus for human powered vehicles and machines. The propulsion apparatus is powered by exerting a force (such as the operator's weight) onto the foot pedals in a reciprocating fashion. It is comprised of two ratcheting arm foot pedals which transfer a high torque and low speed input to the output axle ; transmission elements for shifting the displacement of one arm foot pedal into an equal and opposite displacement of the other one; and an arrangement of gears and ratcheting crank arms which convert the alternating motion into rotational motion and transfers a low torque and high speed input to the output axle. The high torque low speed input engages when the output axle slows down to a certain speed and the low torque high speed input is engaged until the output axle reaches a certain speed in order to achieve and maintain an overall good average torque and speed in the output axle.
PROPULSION APPARATUS FOR HUMAN POWERED VEHICLES AND MACHINES
APPAREIL DE PROPULSION POUR VEHICULES ET MACHINES A PROPULSION HUMAINE
2015-05-12
Patent
Elektronische Ressource
Englisch
HUMAN-POWERED BOAT AND HUMAN-POWERED PROPULSION APPARATUS THEREFOR
Europäisches Patentamt | 2017
|Human powered boat and human-powered propulsion apparatus therefor
Europäisches Patentamt | 2018
|HUMAN-POWERED BOAT AND HUMAN-POWERED PROPULSION APPARATUS THEREFOR
Europäisches Patentamt | 2016
|