Patent ID: 7891524

Claim:
A fuel and oil mixing device, comprising: a fuel reservoir for holding a quantity of fuel and defining an opening for exit of said fuel; an oil reservoir secured to said fuel reservoir for holding a quantity of oil and defining an opening for exit of said oil; a fuel control valve connected to the fuel reservoir, said fuel control valve defining a fuel conduit in registry with the opening defined by the fuel reservoir for exit of said fuel and further defining an oil conduit; a mixing chamber defining an internal volume, said mixing chamber being connected to the fuel control valve at one end and connected to a spout at another end, said mixing chamber further defining a fuel intake opening, an oil intake opening, and an outlet in registry with the spout; a fuel trap connecting the fuel intake opening of the mixing chamber and the fuel conduit defined by the fuel control valve for delivering said fuel from the fuel control valve to the mixing chamber, wherein said fuel trap is generally U-shaped to prevent said fuel from prematurely flowing through said fuel trap into the mixing chamber; an oil control valve defining a multiplicity of orifices, each of which can be selectively placed in registry with the oil intake opening defined by said mixing chamber and the oil conduit defined by said fuel control valve, and each of the multiplicity of orifices corresponding to a predetermined fuel-to-oil ratio; and an oil trap connected between said oil reservoir and the oil conduit defined by said fuel control valve; wherein, as a user tilts the fuel and oil mixing device forward, fuel flowing into the mixing chamber through the fuel intake opening mixes with oil flowing into the mixing chamber through the oil intake opening, with a fuel-oil mixture exiting through the outlet of the mixing chamber with a fuel-to-oil ratio determined by the orifice selected and placed in registry with the oil intake opening defined by said mixing chamber and the oil conduit defined by said fuel control valve.