Scooter Having A Gearing System

Abstract

The invention is directed towards a scooter comprising a frame, a front wheel carried by the frame, a rear wheel carried by the frame, a pair of reciprocating pedals attached to the frame, a drive assembly for transferring force from the reciprocating pedals to the rear wheel comprising: a pedal cam having a plurality of openings at various distances from the rotational center of the pedal cam; a drive pin extending from one of the reciprocating pedals and is received on one of the openings; and, a gear shifting cable attached to the drive pin causing the drive pin to engage with one of the openings so that the pedal cam is rotated by the movement of the pedal so that based upon the opening engaged, the rotational power output that the pedal cam ultimately exerts on the rear wheel is varied.

What is claimed is: 
     
         1 . A scooter comprising a frame, a front wheel carried by the frame, a rear wheel carried by the frame, a pair of reciprocating pedals attached to the frame, a drive assembly for transferring force from the reciprocating pedals to the rear wheel, the drive assembly comprising:
 a pedal cam having a plurality of openings disposed at various distances from a rotational center of the pedal cam;   a drive pin extending from one of the reciprocating pedals and configured to engage with one of the openings;   a gear shifting cable attached to the drive pin, the gear shifting cable configured to cause the drive pin to engage with one of the openings of the pedal cam so that the pedal cam is rotated by movement of the reciprocating pedal wherein a rotational power output that the pedal cam operably exerts on the rear wheel is varied based upon which one of the openings is engaged with the drive pin; and the scooter further comprising a motion saver carried by the scooter, the motion saver having;   a first arm pivotally connected to a second arm wherein the first arm is connected to the gear shifting cable and the second arm connected to the drive pin; and,   a spring attached the first and second arms for biasing the arms in an equilibrium position so that when the gear shifting cable pulls the first arm, the spring is tensioned thereby lessened force on the drive pin allowing the drive pin to move from one opening to the next.   
     
     
         2 . The scooter of  claim 1  including a seat having:
 a cushioned seating area attached to a support staff carried by the frame; 
 a quick release clamp to allow the support staff to telescope; 
 a mounting bracket attached to the support staff allowing the seat to be removed from or slidably arranged along the frame; and, 
 a pivot clamp included in the support staff for securing the seat is an extended position for operation and a folded position. 
 
     
     
         3 . The scooter of  claim 1  including a duplexer having an upper gear shift wire carried by a radiused cam attached to lower gear shift wire wherein the radiused cam is configured to be rotated by the upper gear wire so as to operate the lower gear wire to put tension on the drive pin and disengage the drive pin from the pedal cam. 
     
     
         4 . The scooter of  claim 1  including a coupling cam configured to rotate an axle attached to the rear wheel during a down stroke of the respective foot pedals thereby rotating a drive sprocket to propel the scooter forward. 
     
     
         5 . The scooter of  claim 1  including a spring loaded one way clutch attached to the axle so that when one of the pedals is in an upstroke, the clutch spins freely while the axle is rotated by the opposite pedal. 
     
     
         6 . The scooter of  claim 1  wherein the pedal cam includes an aspheric curvature along it perimeter. 
     
     
         7 . The scooter of  claim 1  including:
 a teeter system having first arm attached to a first pedal and a second arm attached to a second pedal; and, 
 a pair of radiused plates included in the teeter system each of which have a plurality of openings that align with one another when in a resting position wherein a plate pin is received into one of the openings to prevent the radiused plates from rotating relative to each other so that the teeter system allowed the foot pedals to reciprocate in a synchronous manner. 
 
     
     
         8 . The scooter of  claim 7  including a plate cable attached to one radiused plate to pull the one radiused plate forward and away from the other radiused plate allowing the radiused plates to rotate in opposite directions from one another in response to a downward pressure placed on the foot pedals so that a rider can establish a comfortable foot pedal position. 
     
     
         9 . The scooter of  claim 8  including a third radiused plate attached to the frame and attached to the plate pin. 
     
     
         10 . A scooter comprising a frame, a front wheel carried by the frame, a rear wheel carried by the frame, a pair of reciprocating pedals attached to the frame, a drive assembly for transferring force from the reciprocating pedals to the rear wheel, the drive assembly comprising:
 a pedal cam having a plurality of openings disposed at various distances from a rotational center of the pedal cam;   a drive pin extending from one of the reciprocating pedals and configured to engage with one of the openings;   a gear shifting cable attached to the drive pin, the gear shifting cable configured to cause the drive pin to engage with one of the openings of the pedal cam so that the pedal cam is rotated by movement of the reciprocating pedal wherein a rotational power output that the pedal cam operably exerts on the rear wheel is varied based upon which one of the openings is engaged with the drive pin; and the scooter further comprising a motion saver carried by the scooter, the motion saver having;   a block having an indention and attached to the drive pin;   a shifting pin attached to the block by a spring having a point where the point is received into the indention, whereas the shifting pin is attached to the gear shifting cable; and,   a spring connected to the block and the shifting pin biasing the block and shifting pin in an equilibrium position so that when the gear shifting cable pulls the shifting pin, the spring is tensioned thereby lessened force on the drive pin allowing the drive pin to move from one opening to the next.   
     
     
         11 . The scooter of  claim 10  including a seat having:
 a cushioned seating area attached to a support staff carried by the frame;
 a quick release clamp to allow the support staff to telescope; 
 a mounting bracket attached to the support staff allowing the seat to be removed from or slidably arranged along the frame; and, 
 a pivot clamp included in the support staff for securing the seat is an extended position for operation and a folded position. 
 
 
     
     
         12 . The scooter of  claim 10  including a duplexer having an upper gear shift wire carried by a radiused cam attached to lower gear shift wire wherein the radiused cam is configured to be rotated by the upper gear wire so as to operate the lower gear wire to put tension on the drive pin and disengage the drive pin from the pedal cam. 
     
     
         13 . The scooter of  claim 10  including a coupling cam configured to rotate an axle attached to the rear wheel during a down stroke of the respective foot pedals thereby rotating a drive sprocket to propel the scooter forward. 
     
     
         14 . The scooter of  claim 10  including a spring loaded one way clutch attached to the axle so that when one of the pedals is in an upstroke, the clutch spins freely while the axle is rotated by the opposite pedal. 
     
     
         15 . The scooter of  claim 10  wherein the pedal cam includes an aspheric curvature along it perimeter. 
     
     
         16 . The scooter of  claim 10  including:
 a teeter system having first arm attached to a first pedal and a second arm attached to a second pedal; and, 
 a pair of radiused plates included in the teeter system each of which have a plurality of openings that align with one another when in a resting position wherein a plate pin is received into one of the openings to prevent the radiused plates from rotating relative to each other so that the teeter system allowed the foot pedals to reciprocate in a synchronous manner. 
 
     
     
         17 . The scooter of  claim 10  including a plate cable attached to one radiused plate to pull the one radiused plate forward and away from the other radiused plate allowing the radiused plates to rotate in opposite directions from one another in response to a downward pressure placed on the foot pedals so that a rider can establish a comfortable foot pedal position. 
     
     
         18 . The scooter of  claim 10  including a third radiused plate attached to the frame and attached to the plate pin. 
     
     
         19 . A scooter comprising a frame, a front wheel carried by the frame, a rear wheel carried by the frame, a pair of reciprocating pedals attached to the frame, a drive assembly for transferring force from the reciprocating pedals to the rear wheel, the drive assembly comprising:
 a pedal cam having a plurality of openings disposed at various distances from a rotational center of the pedal cam;   a drive pin extending from one of the reciprocating pedals and configured to engage with one of the openings;   a gear shifting cable attached to the drive pin, the gear shifting cable configured to cause the drive pin to engage with one of the openings of the pedal cam so that the pedal cam is rotated by movement of the reciprocating pedal wherein a rotational power output that the pedal cam operably exerts on the rear wheel is varied based upon which one of the openings is engaged with the drive pin; and the scooter further comprising a teeter system carried by the scooter, the teeter system having;   a first arm attached to a first pedal and a second arm attached to a second pedal; and,   a pair of radiused plates included in the teeter system each of which have a plurality of openings that align with one another when in a resting position wherein a plate pin is received into one of the openings to prevent the radiused plates from rotating relative to each other so that the teeter system allowed the foot pedals to reciprocate in a synchronous manner.   
     
     
         20 . The scooter of  claim 19  including a plate cable attached to one radiused plate to pull the one radiused plate forward and away from the other radiused plate allowing the radiused plates to rotate in opposite directions from one another in response to a downward pressure placed on the foot pedals so that a rider can establish a comfortable foot pedal position.