A PROPULSION SYSTEM FOR HUMAN POWERED VEHICLES

A propulsion system for human powered vehicles includes an outer lever having an input end and an output end. An orbiting sprocket is coupled to the output end of the outer lever. A fixed sprocket is also provided, with the orbiting sprocket orbiting around the fixed sprocket. A closed tension-beari...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	SPRAGUE, PAUL
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	CYCLES LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS PERFORMING OPERATIONS POWERED PROPULSION OF SLEDGES OR RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES TRANSPORTING
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Beschreibung
Zusammenfassung:	A propulsion system for human powered vehicles includes an outer lever having an input end and an output end. An orbiting sprocket is coupled to the output end of the outer lever. A fixed sprocket is also provided, with the orbiting sprocket orbiting around the fixed sprocket. A closed tension-bearing member engages an outer circumference of both the orbiting sprocket and the fixed sprocket. A driveshaft is co-axial with the fixed sprocket, the driveshaft being free to rotate with respect to the fixed sprocket and the crank lever being fixedly connected to the driveshaft and rotationally connected to the orbiting sprocket. A chassis is propelled by the driveshaft. Application of a force on the input end of the outer lever causes the orbiting sprocket to orbit around the fixed sprocket and thereby rotate the crank lever to impart rotation to the driveshaft and propel the chassis.