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Filtration device for use with a fuel vapor recovery system

  • US 6,599,350 B1
  • Filed: 12/20/1999
  • Issued: 07/29/2003
  • Est. Priority Date: 12/20/1999
  • Status: Expired due to Term
First Claim
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1. A filtration device for filtering air used with a fuel vapor recovery system, the filtration device comprising:

  • a housing having an upper end and a lower end, said housing defining a chamber, said chamber having an arcuate interior surface;

    an air inlet associated with said chamber such that said inlet intersects with said arcuate interior surface to form an inlet at the intersection of said inlet and said arcuate interior surface, said air inlet oriented such that air entering said chamber through said air inlet strikes said arcuate interior surface, wherein said arcuate interior surface redirects the flow of the air causing it to rotate in said chamber about a rotational axis wherein the centrifugal force of the rotating air filters out contaminants contained therein;

    an air outlet for removing filtered air, said air outlet positioned within said chamber and including an outlet port positioned at one of the following positions, coincident with and spaced from, the rotational axis of the chamber;

    said housing further including a barrier wall, said barrier wall extending into said chamber and spaced from said arcuate interior surface such that a gap is formed between said barrier wall and said arcuate surface, said barrier wall extending into said chamber to a position past the outlet port wherein air entering said chamber must flow past an end of said barrier wall and then through a gap formed between said barrier wall and said outlet passage prior to exiting said chamber through said outlet port.

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