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US 12,448,080 B2Granted
Transmission for lever-driven cycle
OwnerGordon Harold Hanseninventor
Life of this patent
Estimating the term…
Abstract
A combination driving hub and transmission for a cycle—such as a bicycle. The inventive hub is preferably installed on the rear of a bicycle. A pair of reciprocating cranks provide input torque to corresponding input shafts. These input shaft transmit the torque through a series of step-up shafts. The step-up shafts increase the speed of the initial input—finally delivering the torque to an output shaft. The output shaft is preferably the hub of the bicycle's rear wheel.
Claims20
A combination cycle transmission and hub configured to attach to a frame of a cycle, comprising:
- (a) a stationary axle attached to said frame and having an axle center;
- (b) a left input shaft rotationally mounted on said stationary axle;
- (c) a left crank;
- (d) a left one-way clutch connecting said left crank to said left input shaft;
- (e) a left carrier secured in a stationary position with respect to said stationary axle;
- (f) said left input shaft having a left gear flange including a left first gear;
- (g) a left first step-up shaft rotationally mounted to said left carrier, with said left first step-up shaft mounting a left second gear and a left third gear;
- (h) a left second step-up shaft rotationally mounted to said left carrier, with said left second step-up shaft mounting a left fourth gear and a left fifth gear;
- (i) an output shaft rotationally mounted on said left input shaft;
- (j) said output shaft including a left sixth gear;
- (k) said left first gear being engaged to said left second gear;
- (l) said left third gear being engaged to said left fourth gear;
- (m) said left fifth gear being engaged to said left sixth gear;
- and
- (n) said output shaft being a hub in a wheel of said cycle.
12 more elements
A transmission configured to attach to a frame of a cycle, comprising:
- (a) an axle attached to said frame and having an axle center;
- (b) a left input shaft rotationally mounted on said axle;
- (c) a left crank;
- (d) a left one-way clutch connecting said left crank to said left input shaft;
- (e) a left carrier secured in a stationary position with respect to said axle;
- (f) said left input shaft having a left gear flange including a left first gear;
- (g) a left first step-up shaft rotationally mounted to said left carrier, with said left first step-up shaft mounting a left second gear and a left third gear;
- (h) a left second step-up shaft rotationally mounted to said left carrier, with said left second step-up shaft mounting a left fourth gear and a left fifth gear;
- (i) an output shaft rotationally mounted on said left input shaft;
- (j) said output shaft including a left sixth gear;
- (k) said left first gear being engaged to said left second gear;
- (l) said left third gear being engaged to said left fourth gear;
- (m) said left fifth gear being engaged to said left sixth gear;
- and
- (n) said output shaft being a hub in a wheel of said cycle.
12 more elements
Dependencies are inferred from the claim text.