초록 ▼

A front wheel of a scooter is pivotally mounted to a frame and includes an upwardly extending shaft supporting a handlebar for steering the scooter. A footpad or peg or pedal, mounted on a spring returned lever, is interconnected with the rear wheel through a gear mechanism supported by the frame. B

A front wheel of a scooter is pivotally mounted to a frame and includes an upwardly extending shaft supporting a handlebar for steering the scooter. A footpad or peg or pedal, mounted on a spring returned lever, is interconnected with the rear wheel through a gear mechanism supported by the frame. By pumping the footpad, rotation of the rear wheel and forward motion of the scooter occurs. The gear mechanism includes a first gear or sprocket mounted for rotation about the arms of rotation of the rear wheel. A further sprocket coaxially mounted is linked via a drive-chain to a sprocket on an offset shaft. A further sprocket on the offset shaft drives a final, drive sprocket via a further chain. And the final sprocket drives the rear wheel through a one way clutch. Depression of the footpad, peg or pedal moves a rack-like bar longitudinally. The bar is in engagement with and drives the first gear or sprocket. The bar may carry drive-chain cross-members or pins that engage the teeth of the first sprocket.

대표청구항 ▼

A front wheel of a scooter is pivotally mounted to a frame and includes an upwardly extending shaft supporting a handlebar for steering the scooter. A footpad or peg or pedal, mounted on a spring returned lever, is interconnected with the rear wheel through a gear mechanism supported by the frame. B

A front wheel of a scooter is pivotally mounted to a frame and includes an upwardly extending shaft supporting a handlebar for steering the scooter. A footpad or peg or pedal, mounted on a spring returned lever, is interconnected with the rear wheel through a gear mechanism supported by the frame. By pumping the footpad, rotation of the rear wheel and forward motion of the scooter occurs. The gear mechanism includes a first gear or sprocket mounted for rotation about the arms of rotation of the rear wheel. A further sprocket coaxially mounted is linked via a drive-chain to a sprocket on an offset shaft. A further sprocket on the offset shaft drives a final, drive sprocket via a further chain. And the final sprocket drives the rear wheel through a one way clutch. Depression of the footpad, peg or pedal moves a rack-like bar longitudinally. The bar is in engagement with and drives the first gear or sprocket. The bar may carry drive-chain cross-members or pins that engage the teeth of the first sprocket. over work pieces on the conveyor system; at least one camera mounted on the support structure; and a processor coupled to the at least one camera, wherein the at least one camera is constructed and arranged to capture a first image of a first registration mark associated with the first rail and to capture a second image of a second registration mark associated with the second rail and to provide the first and second images to the processor, and wherein the processor is programmed to receive the first and second images and determine the first conveyor lane width value. 2. The apparatus of claim 1, wherein the first registration mark is located at a first predetermined position on the first rail and the second registration mark is located at a second predetermined position on the second rail. 3. The apparatus of claim 2, further including a motor coupled to the processor and to the first rail, the motor being adapted to receive and respond to control signals provided by the processor to move the first rail a distance based on a first conveyor lane adjustment value generated by the processor. 4. The apparatus of claim 3, wherein the platform is further adapted to securely hold the at least one camera and to move the at least one camera over the conveyor system. 5. The apparatus of claim 4, wherein the object includes a material dispensing head. 6. The apparatus of claim 5, wherein the conveyor system further includes: at least a third rail and at least a fourth rail separated by a second space equal to a second conveyor lane width value, wherein the at least one camera is constructed and arranged to capture a third image of a third registration mark associated with the third rail and to capture a fourth image of a fourth registration mark associated with the fourth rail and to provide the third and fourth images to the processor, and wherein the processor is programmed to receive the third and fourth images and determine the second conveyor lane width value. 7. The apparatus of claim 6, wherein the third registration mark is located at a third predetermined position on the third rail and the fourth registration mark is located at a fourth predetermined position on the fourth rail. 8. The apparatus of claim 7, wherein the motor is further coupled to the fourth rail, the motor being adapted to receive and respond to control signals provided by the processor to move the fourth rail a distance based on a second conveyor lane adjustment value. 9. The apparatus of claim 1, wherein the camera is movably mounted to the support structure to allow the camera to be moved under the control of the processor over the first registration mark and the second registration mark. 10. The apparatus of claim 1, wherein the object includes a material dispensing head. 11. The apparatus of claim 1, wherein the conveyor system further includes: at least a third rail and at least a fourth rail separated by a second space equal to a second conveyor lane width value, wherein the at least one camera is constructed and arranged to capture a third image of a third registration mark associated with the third rail and to capture a fourth image of a fourth registration mark associated with the fourth rail and to provide the third and fourth images to the processor, and wherein the processor is programmed to receive the third and fourth images and determine the second conveyor lane width value. 12. The apparatus of claim 11, wherein the third registration mark is located at a third predetermined position on the third rail and the fourth registration mark is located at a fourth predetermined position on the fourth rail. 13. The apparatus of claim 2, wherein the processor is programmed to identify the second rail based on the second predetermined position. 14. An apparatus that positions an object to perform a task on a work piece, the apparatus comprising: the object a work surface; a support structure positioned over the work surface and co nstructed and arranged to support the object over the work surface; a conveyor system mounted on the work surface and having at least a first rail and at least a second rail separated by a first space equal to a conveyor lane width; means for viewing the conveyor system and for determining the conveyor lane width, wherein the means for viewing the conveyor system and for determining the conveyor lane width includes a camera and includes means for moving the camera to a first position over the first rail and to a second position over the second rail. 15. The apparatus of claim 14, further including means for moving at least one of the first rail and the second rail to adjust the conveyor lane width. 16. The apparatus of claim 15, wherein the means for viewing the conveyor system and for determining the conveyor lane width includes means for determining a distance between the first position and the second position. 17. The apparatus of claim 14, wherein the second rail has a registration mark at a position on the second rail, and wherein the system further comprises means for identifying the second rail based on the position of the registration mark.