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US 2003/0111821 A1Published application
Pedal powered scooter
OwnerJohnny CHOWinventor
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OwnerJohnny CHOWinventor
Estimating the term…
Abstract of Disclosure The following invention is directed to a pedal powered two wheel scooter. The invention discloses a scooter having a steerable front wheel assembly, a rear wheel assembly and a frame linking the front and rear wheel assemblies. The scooter has a drive mechanism comprising front and back crankshafts rotatably attached to the frame and attached to left and right pedals. The front crankshaft transmits power to the rear wheel by means of a front sprocket gear, a continuous chain and a rear sprocket gear. In another embodiment the drive mechanism comprises a front crankshaft rotatably attached to the frame that is also attached to the right and left pedals by means of a freewheel ratchet mechanism with the other end of the right and left pedals attaching to a see-saw bar that pivotally engages the frame in a position between the left and right pedals.
A scooter having a steerable front wheel assembly, a rear wheel assembly and a frame linking the front and rear wheel assemblies and including a drive mechanism comprising:
The scooter of claim 1 wherein the rear left and right crank arms are longer than the front left and right crank arms and each of the left and right pedal assembly comprises means for slidably adjusting the length of the pedal.
The scooter of claim 1 wherein the frame comprises a top tube, a trailing arm hingedly attached to the top tube, and resilient means disposed between the top tube and the trailing arm, wherein the rear wheel assembly is attached to the trailing arm.
The scooter of claim 3 wherein the resilient means comprises a coil spring.
The scooter of claim 1 wherein the steerable front wheel assembly is hingedly attached to the top tube, permitting the scooter to be folded flat.
The scooter of claim 1 wherein the rear wheel assembly is linked to the frame at a point between the rear crankshaft and the front crankshaft.
The scooter of claim 6 wherein the scooter has two laterally spaced front wheels.
A two-wheeled scooter having a steerable front wheel assembly, a rear wheel assembly and a frame linking the front and rear wheel assemblies and including a drive mechanism comprising:
The scooter of claim 8 wherein the frame comprises a top tube, a trailing arm hingedly attached to the top tube, and resilient means disposed between the top tube and the trailing arm, wherein the rear wheel assembly is attached to the trailing arm.
The scooter of claim 9 wherein the resilient means comprises a coil spring.
The scooter of claim 8 wherein the steerable front wheel assembly is hingedly attached to the top tube, permitting the scooter to be folded flat.