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Vapor vent valve apparatus

  • US 4,819,607 A
  • Filed: 10/09/1987
  • Issued: 04/11/1989
  • Est. Priority Date: 10/09/1987
  • Status: Expired due to Fees
First Claim
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1. A valve apparatus for controlling the flow of liquid from a vehicle fuel tank having a closable fuel inlet leading from a liquid receiving tank interior, said valve apparatus comprising:

  • vapor vent conduit means opening into said tank interior for purging vapors from said tank;

    valve means arranged in a cooperative relationship with said conduit means and effective to regulate the flow of fluid from said tank;

    electrically energizable circuit means responsive to;

    first operative means including an operator influenced switch having at least two positions, second operative means for monitoring fuel level in said tank, third operative means for monitoring whether the inlet port is open or closed, fourth operative means including resettable timer means for monitoring when and for how long the inlet port is open; and

    , solenoid means for influencing the effectiveness of said valve means, wherein said circuit means is completed and said solenoid means is controlled to open said valve means for a predetermined period of time extending from the opening of said fuel inlet and after said switch means is moved by the operator to one of said two positions and when said second operative means senses the fuel level in said tank has attained a predetermined level.

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