The device is suitable for turning an air stream from an intake air passageway, which is directed inwardly along a plane from a periphery towards a center to a fuel/air mixing chamber having an annular downwardly flowing mixing passageway with a longitudinal axis at the center. 27, 1996 to Endrigo, discloses an insert device for smoothing air flow from air filters to carburetors.
The curvature of the intake stack provides for substantially laminar flow of the input air, the laminar flow being undisturbed by the shape of the input path. An air intake velocity stack is adapted to be coupled to the air inlet of a carburetor, the surface of the air intake stack substantially eliminating turbulence at the air intake velocity stack as well as increasing the density of air being input to the carburetor. 3, 1978 to Carter, provides an improved carburetor air intake velocity stack for maximizing the quantity of air delivered to a carburetor. More specifically, the vane is stationary and is located in the air horn or the air intake passageway of the cylinder head. The air intake mechanism includes an air passageway that contains a fixed vane located in a plane that is parallel to the air flow within the passageway. 16, 2002 to Taylor, claims a modified air intake mechanism for an internal combustion engine. The filter has a cylindrically formed flange member which is trapped between said air intake velocity stack and the carburetor. A shaped, mesh filter having an effective open area which exceeds the open area of the velocity stack by at least about 50%, is located within said air intake velocity stack. The first end is adapted to be coupled to the carburetor, while the second end is open to the air. 9, 1999 to Henderson, shows a carburetor air intake velocity stack engagable with a carburetor inlet, that has a cylindrical throat section having first and second ends. A radially interlocking arrangement may be employed at the inlet from the air inlet assembly to retain the funnel thereto. The components may be fixed to the carburetors by means of one or more clamp rings, may be additionally joined together by projections from the elastic funnel which are retained in holes in the rigid cover. The funnel and funnel cover are affixed to the carburetor or carburetors and extend in spaced relation towards the air inlet assembly.
The air funnel assembly includes an elastic air funnel and an air funnel cover. 3, 1986 to Shiratsuchi, et al., describes an air funnel assembly extending between an air inlet assembly and one or more carburetors on a two-wheeled vehicle. Prior art intakes do not direct the airflow into the carburetor from inside the air filter area with an enclosed shroud forcing the air into the carburetor improving the performance of the motor. Prior art air intakes in most instances do not address the problem of gas misting from the carburetor. In motorcycle carburetors mounted with a horizontal opening, such as Harley Davidson models of 883 cc, 1400 cc, and 80 ci depending on which motor combination, pipes, cam with valve overlap, a problem that can occur in some instances is that a gas mist comes out of the carburetor when accelerating allowing gas to saturate the air filter with a gas mist and then the gas will drip down the side of the motorcycle causing gasoline odors, possible paint damage, stains, and a potential fire hazard. The present invention relates to air intake for carburetors, and more particularly, to an air intake scoop for a motorcycle carburetor which inserts into the carburetor and fits within the air filter housing.
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