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US 2013/0154133 A1Published application
Carburetor float and method of manufacturing same
AssigneeHoffer Plastics Corporation
InventorsCharles Webster, Keith Farthing
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AssigneeHoffer Plastics Corporation
InventorsCharles Webster, Keith Farthing
Estimating the term…
A method of making a carburetor float by first creating a homogeneous mixture of gas and polymer in a plastic injection machine. The gas/polymer mixture is injected into a tool having a mold cavity. A moveable portion of the mold cavity allows the gas/polymer mixture to expand in that area thus forming a foamed portion of the finished float. The portion of the mold that is stationary does not allow the gas/polymer mixture to foam and thus forms a portion of the finished float with a higher density that the foamed portion. The result is a float made of the homogeneous mixture with two differing densities in two different portion of the float.
A method of making an injection molded part comprising the steps of:
A float made from a single-phase solution comprising a foamed material made from the single-phase solution and having at least one portion of the float having a first density and at least a second portion having a second density, the first density being greater than the second density.
A carburetor float made by the process of:
Dependencies are inferred from the claim text.