Patent ID: 7461714
Filing Date: 2008-12-09
Classification: B62M

Abstract:
1. An electric drive vehicle comprising: a frame; a jackshaft rotatably mounted to said frame; a pedal crank assembly rotatably mounted to said frame; one of a pedal sprocket and a pedal pulley fixed to said pedal crank assembly; one of a jackshaft-pedal sprocket and a jackshaft-pedal pulley connected to said jackshaft; one of a pedal-jackshaft chain and a pedal-jackshaft belt engaged to said one of the pedal sprocket and the pedal pulley and said one of the jackshaft-pedal sprocket and the jackshaft-pedal pulley respectively for transferring rotational motion from said one of the pedal sprocket and the pedal pulley to said one of the jackshaft-pedal sprocket and the jackshaft-pedal pulley respectively; a jackshaft-pedal freewheel rotatably coupling said one of the jackshaft-pedal sprocket and the jackshaft-pedal pulley and said jackshaft and locking to couple rotation of said one of the jackshaft-pedal sprocket and the jackshaft-pedal pulley to said jackshaft, and unlocking to de-couple rotation of said jackshaft, to said one of said jackshaft-pedal sprocket and said jackshaft-pedal pulley, thereby allowing said pedal crank assembly to turn said jackshaft but not allowing said jackshaft to turn said pedal crank assembly in a forward direction through said one of the pedal-jackshaft chain and the pedal-jackshaft belt respectively, the forward direction corresponding to forward motion of the vehicle; an electric motor, having a rotatable assembly and a fixed assembly, said fixed assembly attached to said frame; one of a motor sprocket and a motor pulley connected to said rotatable assembly of said motor; one of a jackshaft-motor sprocket and a jackshaft-motor pulley connected to said jackshaft; one of a motor-jackshaft chain and a motor-jackshaft belt engaged to said one of the motor sprocket and the motor pulley and said one of the jackshaft-motor sprocket and the jackshaft-motor pulley respectively for transferring rotational motion from said rotatable assembly of said electric motor to said jackshaft; a driven wheel, having one of at least one wheel sprocket and at least one wheel pulley, said driven wheel rotatably mounted to said frame; one of a jackshaft-wheel sprocket and a jackshaft-wheel pulley fixed to said jackshaft wherein said one of said jackshaft-wheel sprocket and said jackshaft-wheel pulley rotates with a same angular velocity at all times as said jackshaft during all operation of said electric drive vehicle; and one of a jackshaft-wheel chain and a jackshaft-wheel belt engaged to said one of the jackshaft-wheel sprocket and the jackshaft-wheel pulley respectively and said one of the at least one wheel sprocket and the at least one wheel pulley respectively for transferring rotational motion from said jackshaft to said one of the at least one wheel sprocket and the at least one wheel pulley respectively.