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Filling and venting system for a fuel tank

  • US 6,152,196 A
  • Filed: 02/25/1999
  • Issued: 11/28/2000
  • Est. Priority Date: 02/27/1998
  • Status: Expired due to Term
First Claim
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1. A filling and venting system for a fuel tank comprising:

  • a canister having a fill section and a vent section defined therein, said fill section including a fuel inlet port for the introduction of fuel thereinto, and a fuel outlet port configured to be attached to a fuel tank for directing fuel thereinto, said fuel inlet and said fuel outlet are joined by a fill tube which is disposed in said canister, said fill tube including a least one opening therein which is in communication with the interior of the fill section of said canister, said vent section including a vapor outlet port configured to be attached to a vent, and a vapor inlet port configured to be attached to said fuel tank, so as to permit vapor to pass from said fuel tank, through said canister and to said vent, said vapor inlet port configured to project into said fuel tank to a level below a level at which said fuel outlet port enters said fuel tank;

    a partition assembly including a wall separating said fill section and said vent section, said wall having an opening defined therein which permits fluid to flow therethrough, said partition assembly further including a floatable sealing member which is disposed so as to cover said opening in said wall and prevent fluid flow therethrough when a level of liquid in the canister is below a predetermined value, and to uncover said opening when said level of liquid is above said predetermined value.

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