A vehicle having a chassis and motor. An electronic controller and receiver for receiving control signals from a remote control. A pair of ground-engaging front and rear wheels mounted to a front and rear portions of the chassis, and being freely rotatably mounted to the chassis. A ground-engaging c
A vehicle having a chassis and motor. An electronic controller and receiver for receiving control signals from a remote control. A pair of ground-engaging front and rear wheels mounted to a front and rear portions of the chassis, and being freely rotatably mounted to the chassis. A ground-engaging center drive wheel operably coupled to the drive motor, the center drive wheel being mounted on a rotatable platform positioned on the chassis within a perimeter defined by the front and rear wheels, the rotatable platform rotating with respect to the chassis to allow the central drive wheel to steer the vehicle in different directions, the central drive wheel having a coefficient of friction higher than the front and rear wheels to aid in driving the vehicle in different direction.
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1. A toy vehicle comprising: a chassis having secured thereto a pair of freely rotatable front wheels and a pair of freely rotatable rear wheels;a motor assembly for driving a main gear;a collar upwardly extending from the chassis, the collar having a pair of arcuate flanges, the pair of arcuate fla
1. A toy vehicle comprising: a chassis having secured thereto a pair of freely rotatable front wheels and a pair of freely rotatable rear wheels;a motor assembly for driving a main gear;a collar upwardly extending from the chassis, the collar having a pair of arcuate flanges, the pair of arcuate flanges being diametrically opposed and upwardly extending from a top edge of the collar, the collar being positioned around an aperture defined in the chassis;an annular gear positioned over the aperture, the annular gear having teeth meshed with the main gear, the annular gear being movable around the collar, such that when the main gear rotates the annular gear will rotate around the collar;a centered wheel assembly secured about the aperture in the chassis, the centered wheel assembly having at least: (a) a center drive wheel housing chassis having diametrically opposed sides with openings and opposed sides defining a channel therebetween, the opposed sides further including ledges extending outwardly therefrom and being positioned on the edge of the collar between the arcuate flanges such that the center drive wheel housing is movably between the arcuate flanges;(b) an axle extending through the openings and having attached on one end thereof a center drive wheel gear meshed to the annular gear;(c) a center drive wheel having an outer edge for contacting with a surface and being secured about the axle and positioned within the channel and sized such that when the center drive wheel housing chassis spins about the annular gear the center drive wheel spins within the aperture, andwherein when the motor rotates the annular gear, the center drive wheel gear spins the center drive wheel housing chassis until the ledges come into contact with one of the flanges, whereby the annular gear continuing to rotate drives the center drive wheel gear rotating the axle and thereby rotating the center drive wheel causing the vehicle to move. 2. The vehicle of claim 1, wherein each of the two arcuate flanges include an initial edge and a trailing edge and the arcuate flanges are preferably positioned such that the initial edge and the trailing edge are about 90 degrees from each other and the trailing edge is aligned such that the center drive wheel is substantially aligned with a center longitudinal axis defined through the vehicle. 3. The vehicle of claim 2, wherein when the motor is moved to a first activated position to drive the main gear in a forward direction, the main gear rotates the annular gear which rotates the center drive wheel gear, rotating the wheel assembly until the ledges contact the initial edges, at which point the center drive wheel is aligned with the longitudinal axis of the vehicle and once the wheel assembly is stopped from rotating around the annular gear, the center drive wheel gear begins to rotate the axle driving the center drive wheel, such that the vehicle moves forward. 4. The vehicle of claim 3, wherein when the motor is moved from the activated positioned to a de-activated position and the main gear stops rotating the annular gear, a momentum stored in the center drive wheel continues to rotate the wheel assembly around a non-rotating annular gear, causing the wheel assembly to rotate spinning the entire vehicle. 5. The vehicle of claim 4, wherein when the motor is moved to a second activated position to drive the main gear in a rearward direction, the center drive wheel is substantially perpendicular to the longitudinal axis of the vehicle and the ledges are positioned against trailing edges of the flanges, the main gear continues to drive the annular gear rotating the center drive wheel gear to spin the axle and thereby rotating the center drive wheel in its substantially perpendicular position. 6. The vehicle of claim 1, wherein the aperture is positioned between the pair of rotatable rear wheels. 7. The vehicle of claim 1, wherein meshed between the motor and main gear is a gear train. 8. The vehicle of claim 7, wherein the gear train includes first gear train driven by the motor and includes a second gear train driven by the first gear train and in communication with the main gear, such that when the motor is activated the main gear rotates. 9. The vehicle of claim 8, wherein the second gear train is offset from the first gear train. 10. The vehicle of claim 1 further comprising a plurality of posts extending from the chassis and positioned around the collar wherein the annular gear rests against the posts and the annular gear is sized to fit over the collar such that an external side edge of the collar fits within a circumference defined by the annular gear. 11. The vehicle of claim 1, wherein the centered wheel assembly further including a center wheel housing cap having ends for securing to the chassis and having a center apex opening that receives a center apex pin extending from the center drive wheel housing chassis. 12. The vehicle of claim 1, wherein each of the rear wheels are attached to the chassis by an axle extending through a rear wheel mounts, the rear wheel mounts having a slot for receiving the axle, such that the rear wheels are moveably in an upwardly and downwardly movement. 13. A toy vehicle having a chassis with secured thereto a pair of freely rotatable front wheels and a pair of freely rotatable rear wheels, and a motor assembly for driving a main gear, the improvement comprising: a collar upwardly extending from the chassis, the collar having a pair of arcuate flanges, the pair of arcuate flanges being diametrically opposed and upwardly extending from a top edge of the collar, the collar being positioned around an aperture defined in the chassis;an annular gear movably positioned around the collar and meshed with the main gear such that when the main gear rotates the annular gear rotates around the collar; anda centered wheel assembly moveably positioned about the aperture in the chassis, the centered wheel assembly having: ledges extending outwardly therefrom and being positioned on the edge of the collar between the arcuate flanges such that the center drive wheel housing is movably between the arcuate flanges, anda center drive wheel positioned within the aperture and having an outer edge for contacting with a surface, the center drive wheel being driven by a center drive wheel gear meshed to the annular gear, such that when the center drive wheel housing chassis spins about the annular gear the center drive wheel spins within the aperture. 14. The vehicle of claim 13, wherein when the motor is moved: (a) to a first activated position to drive the main gear in a forward direction, the main gear rotates the annular gear which rotates the center drive wheel gear, rotating the wheel assembly until each ledge contacts an initial edges, at which point the center drive wheel is aligned with a longitudinal axis of the vehicle and once the wheel assembly is stopped from rotating around the annular gear, the center drive wheel gear begins to rotate an axle driving the center drive wheel, such that the vehicle moves forward;(b) from the activated positioned to a de-activated position and the main gear stops rotating the annular gear, a momentum stored in the center drive wheel continues to rotate the wheel assembly around a non-rotating annular gear, causing the wheel assembly to rotate spinning the entire vehicle; or(c) to a second activated position to drive the main gear in a rearward direction, the center drive wheel is substantially perpendicular to the longitudinal axis of the vehicle and the ledges are positioned against trailing edges of the flanges, the main gear continues to drive the annular gear rotating the center drive wheel gear to spin the axle and thereby rotating the center drive wheel in its substantially perpendicular position. 15. A toy vehicle comprising: a chassis having secured thereto a pair of front wheels and a pair of rear wheels;a motor assembly for driving a main gear;a collar upwardly extending from the chassis, the collar having a pair of arcuate flanges, the pair of arcuate flanges being diametrically opposed and upwardly extending from a top edge of the collar, the collar being positioned around an aperture defined in the chassis;an annular gear positioned over the aperture, the annular gear having teeth meshed with the main gear, the annular gear being movable around the collar, such that when the main gear rotates the annular gear will rotate around the collar;a centered wheel assembly secured about the aperture in the chassis, the centered wheel assembly having at least: (a) a center drive wheel housing chassis having diametrically opposed sides with openings and opposed sides defining a channel therebetween, the opposed sides further including ledges extending outwardly therefrom and being positioned on the edge of the collar between the arcuate flanges such that the center drive wheel housing is movably between the arcuate flanges;(b) an axle extending through the openings and having attached on one end thereof a center drive wheel gear meshed to the annular gear;(c) a center drive wheel having an outer edge for contacting with a surface and being secured about the axle and positioned within the channel and sized such that when the center drive wheel housing chassis spins about the annular gear the center drive wheel spins within the aperture, andwherein when the motor rotates the annular gear, the center drive wheel gear spins the center drive wheel housing chassis until the ledges come into contact with one of the flanges, whereby the annular gear continuing to rotate drives the center drive wheel gear rotating the axle and thereby rotating the center drive wheel causing the vehicle to move. 16. The vehicle of claim 15, wherein each of the two arcuate flanges include an initial edge and a trailing edge and the arcuate flanges are preferably positioned such that the initial edge and the trailing edge are about 90 degrees from each other and the trailing edge is aligned such that the center drive wheel is substantially aligned with a center longitudinal axis defined through the vehicle. 17. The vehicle of claim 15, wherein the front wheels and rear wheels are separately connected to the chassis such that the wheels are freely rotatable.
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Tae-Sig Kim (Suwon KRX), Driving apparatus for robot.
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