US 11,781,531 B2
Recumbent bicycle-powered generator using an alternator, flywheel and sprocket and chain system
Emma K. Greally, Park City, UT (US)
Filed by Emma K. Greally, Park City, UT (US)
Filed on Mar. 3, 2021, as Appl. No. 17/191,498.
Claims priority of provisional application 63/068,518, filed on Aug. 21, 2020.
Prior Publication US 2022/0056894 A1, Feb. 24, 2022
Int. Cl. H02K 7/116 (2006.01); F03G 5/06 (2006.01); F16H 37/06 (2006.01); H02K 7/02 (2006.01); H02K 7/18 (2006.01); H02K 11/00 (2016.01); A63B 21/22 (2006.01); A63B 22/06 (2006.01)
CPC F03G 5/06 (2013.01) [A63B 21/225 (2013.01); F16H 37/065 (2013.01); H02K 7/02 (2013.01); H02K 7/116 (2013.01); H02K 7/1853 (2013.01); H02K 11/0094 (2013.01); A63B 2022/0611 (2013.01); A63B 2022/0652 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A human-powered generator comprising:
a frame;
a pedal crankset comprising a pedal operatively connected to a crankset sprocket, the pedal crankset being rotatably mounted on the frame;
a flywheel rotatably mounted on the frame, the flywheel comprising:
a flywheel-crankset sprocket attached to rotate with the flywheel; and
a flywheel-countershaft sprocket attached to rotate with the flywheel;
a countershaft rotatably mounted on the frame, the countershaft comprising:
a countershaft-flywheel sprocket attached to rotate with the countershaft; and
a countershaft-alternator sprocket attached to rotate with the countershaft;
an alternator mounted on the frame and comprising:
an alternator drive shaft; and
an alternator sprocket mounted to the alternator drive shaft;
a crankset-flywheel drive chain operatively extending between the crankset sprocket and the flywheel-crankset sprocket;
a flywheel-countershaft drive chain operatively extending between the flywheel-countershaft sprocket and the countershaft-flywheel sprocket; and
a countershaft-alternator drive chain operatively extending between the countershaft-alternator sprocket and the alternator sprocket;
wherein the crankset sprocket, the flywheel-crankset sprocket, the flywheel-countershaft sprocket, the countershaft-flywheel sprocket, the countershaft-alternator sprocket and the alternator sprocket are sized such that a pedaling cadence at the pedal crankset of between approximately 60 rotations per minute (RPM) and approximately 100 RPM achieves an alternator drive shaft RPM of between approximately 2,000 RPM and approximately 5,000 RPM.