Wall racer toy vehicles
DC CAFCFirst Claim
1. A toy vehicle comprising:
- a chassis comprising an undersurface, the chassis configured to mount on at least one wheel that is configured to move on a surface;
a first motor configured to drive the at least one wheel; and
a second motor configured to drive a fan that is configured to draw air from a duct between the undersurface and the surface into a fan duct, the duct comprising an entry portion, an exit portion connected to the fan duct, and a flat transition portion between the entry portion and the exit portion, the duct being structurally smooth from the entry portion to at least a location vertically below the fan duct when the toy vehicle is placed on ground.
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Abstract
A motorized toy vehicle or Wall Racer that is capable of operating on vertical and inverted horizontal surfaces such as walls and ceilings, while being manufacturable at reasonable cost and operable on batteries having sufficient lifetime as to be enjoyable. One or more battery-powered fans draw air from around all or defined portions of the periphery of the chassis of the Wall Racer through a carefully-shaped duct, so that the air in the portion of the duct immediately adjacent the surface flows at high velocity and low pressure; the relatively greater pressure of the surrounding air urges the vehicle against the surface, allowing it to operate on vertical surfaces, such as walls, or inverted on horizontal surfaces, such as ceilings.
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Citations
23 Claims
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1. A toy vehicle comprising:
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a chassis comprising an undersurface, the chassis configured to mount on at least one wheel that is configured to move on a surface; a first motor configured to drive the at least one wheel; and a second motor configured to drive a fan that is configured to draw air from a duct between the undersurface and the surface into a fan duct, the duct comprising an entry portion, an exit portion connected to the fan duct, and a flat transition portion between the entry portion and the exit portion, the duct being structurally smooth from the entry portion to at least a location vertically below the fan duct when the toy vehicle is placed on ground. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A toy vehicle comprising:
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a chassis comprising an undersurface; at least one wheel operatively coupled to the chassis and configured to move on a surface; a fan connected to a fan duct to receive free flowing air drawn in by a duct that is connected to the fan duct and is located between the undersurface and the surface, the receiving of the air by the fan inducing a downforce urging the chassis towards the surface, the duct comprising an entry portion configured to receive a free flow of the air, a transition portion configured to transport the air, and an exit portion configured to exit the air to the fan duct, the duct being structurally smooth from the entry portion to at least a location vertically below the fan duct when the toy vehicle is placed on ground; and a power source to drive the fan to induce the downforce urging the chassis towards the surface. - View Dependent Claims (22)
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23. A battery powered, remotely-controlled toy vehicle configured for operation on a surface, comprising:
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a chassis having an undersurface and having flexible skirts extending along at least two opposite sides of the undersurface of the chassis; at least one wheel mounted on the chassis; a receiver responsive to a control signal from a remote transmitter; at least one battery; at least one motor being supplied with current from the at least one battery responsive to signals provided from the receiver, the at least one wheel being controllably driven by the at least one motor; a fan drive motor being supplied with current from the at least one battery; a fan driven by the fan drive motor, wherein the fan draws air from an intake duct between the undersurface of the chassis and the surface into a fan duct, the undersurface of the chassis being larger in area than the area of the fan duct, a differential pressure between a pressure of the air flowing into the fan and a pressure of ambient air inducing a force urging the chassis toward the surface when the vehicle is placed on the surface with the at least one wheel in contact with the surface and the fan is operational, the intake duct comprising an entry portion configured to receive the air, a transition portion configured to transport the air, and an exit portion configured to exit the air to the fan duct, the intake duct being structurally smooth from the entry portion to at least a location vertically below the fan duct when the toy vehicle is placed on ground.
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Specification