Patent ID: 9365109
Filing Date: 2016-06-14
CPC Classification: B01D,B60K

Claim Text:
1. A fuel cap configured to be coupled with the opening of a fuel tank, the fuel tank defining an interior for containing a volume of fuel, the fuel cap comprising: an inlet opening configured to establish fluid communication with the fuel tank interior; an exit in communication with atmosphere, exterior to the fuel cap; an interior wall having a curved, radially outward facing surface that defines at least a portion of a flow path between the inlet opening and the exit, the flow path extending spirally about an axis of the fuel cap from the inlet opening to the exit; and adsorption media substantially filling the flow path and configured to reduce the emission of VOC vapors through the exit to the surrounding atmosphere; wherein the curved radially outward facing surface of the internal wall and the flow path extend spirally about the axis for at least 300 degrees.