Fuel and vapor flow signaling process
First Claim
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1. A vapor recovery process, comprising the steps of:
- fueling a tank by dispensing liquid volatilizable hydrocarbon fuel into said tank with a vapor recover nozzle;
emitting volatilized hydrocarbon vapors from said tank during fueling;
collecting a substantial amount of said vapors with said nozzle during fueling;
passing said collected vapors from said nozzle through a vapor return hose to a storage tank;
vapor signaling from said nozzle by signaling said passing of said collected vapors through said nozzle and vapor return hose to said storage tank with a viewable mechanical vapor flow indicator on said nozzle; and
fuel signaling from said nozzle by signaling said fueling with a viewable fuel flow indicator in said nozzle spaced separately and away from said vapor flow indicator.
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Abstract
A vapor recovery process signals to customers the presence of flow of gasoline or other liquid fuel and the return flow of vapors. In the preferred process, a customer'"'"'s tank is fueled with a vapor recovery nozzle. Vapors emitted during fueling are collected by the nozzle and passed to a vapor return hose and then into a storage tank. A vapor flow indicator on the nozzle signals flow of vapors passing through the nozzle. A separate fuel flow indicator in the nozzle signals fueling, i.e., passing a fuel through the nozzle into the customer'"'"'s tank.
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Citations
3 Claims
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1. A vapor recovery process, comprising the steps of:
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fueling a tank by dispensing liquid volatilizable hydrocarbon fuel into said tank with a vapor recover nozzle; emitting volatilized hydrocarbon vapors from said tank during fueling; collecting a substantial amount of said vapors with said nozzle during fueling; passing said collected vapors from said nozzle through a vapor return hose to a storage tank; vapor signaling from said nozzle by signaling said passing of said collected vapors through said nozzle and vapor return hose to said storage tank with a viewable mechanical vapor flow indicator on said nozzle; and fuel signaling from said nozzle by signaling said fueling with a viewable fuel flow indicator in said nozzle spaced separately and away from said vapor flow indicator. - View Dependent Claims (2, 3)
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Specification