Wall racer toy vehicles
DCFirst Claim
1. A toy vehicle comprising:
- a chassis comprising an undersurface, the chassis configured to be operably coupled to at least one wheel that is configured to move on a surface;
a first power source configured to drive the at least one wheel; and
a second power source configured to drive a fan that is configured to draw air from a volume between the undersurface and the surface, the drawing of the air by the fan inducing a downforce urging the chassis towards the surface, the air drawn by the fan from between the undersurface and the surface being continuous free flowing air, the volume between the undersurface and the surface comprising an entry portion, an exit portion connected to a fan duct operably coupled to the fan, and a transition portion between the entry portion and the exit portion, the undersurface being flat and structurally smooth in the transition portion, the volume having a smaller cross section in the flat transition portion than in either the entry portion or the exit portion.
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Accused Products
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.
33 Citations
24 Claims
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1. A toy vehicle comprising:
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a chassis comprising an undersurface, the chassis configured to be operably coupled to at least one wheel that is configured to move on a surface; a first power source configured to drive the at least one wheel; and a second power source configured to drive a fan that is configured to draw air from a volume between the undersurface and the surface, the drawing of the air by the fan inducing a downforce urging the chassis towards the surface, the air drawn by the fan from between the undersurface and the surface being continuous free flowing air, the volume between the undersurface and the surface comprising an entry portion, an exit portion connected to a fan duct operably coupled to the fan, and a transition portion between the entry portion and the exit portion, the undersurface being flat and structurally smooth in the transition portion, the volume having a smaller cross section in the flat transition portion than in either the entry portion or the exit portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A toy vehicle comprising:
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a chassis comprising an undersurface, the chassis configured to be operably coupled to two wheels configured to move on a surface, the two wheels located on opposite sides of the chassis; a first power source configured to drive the at least one wheel; and a second power source configured to drive a fan that is configured to draw air from a space between the undersurface and the surface, the drawing of the air by the fan inducing a downforce urging the chassis towards surface, the air drawn by the fan from between the undersurface and the surface being continuous free flowing air, the space between the undersurface and the surface comprising an entry portion, an exit portion connected to a fan duct, and a transition portion between the entry portion and the exit portion, the undersurface being flat and structurally smooth in the transition portion, the space having a smaller cross section in the flat transition portion than in either the entry portion or the exit portion. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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18. A toy vehicle comprising:
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a chassis comprising an undersurface, the chassis configured to be operably coupled to at least one wheel that is configured to move on a surface; and at least one power source configured to drive the at least one wheel, the at least one power source further configured to drive a fan that is configured to draw air from an intake duct between the undersurface and the surface, the drawing of the air by the fan inducing a downforce urging the chassis towards the surface, the air drawn by the fan from between the undersurface and the surface being continuous free flowing air, the intake duct comprising an entry portion, an exit portion connected to a fan duct, and a transition portion between the entry portion and the exit portion, the undersurface being flat and structurally smooth in the transition portion, the intake duct having a smaller cross section in the flat transition portion than in either the entry portion or the exit portion. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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Specification