Patent ID: 6223789
Filing Date: 2001-05-01
Classification: B67D

Abstract:
A system for recovering hydrocarbon vapor effluents from a fuel storage container for use with a fuel delivery system, comprising:vapor transfer means for generating a vapor drawing action effective in communicating vapor between an inlet port and an outlet port thereof;sensor means, disposed in effluent-detecting relationship to said fuel storage container, for providing a measurement indicative of the hydrocarbon content in said hydrocarbon effluents; andvalve means, disposed in vapor communicating relationship at an inlet port thereof to said fuel storage container and disposed in vapor communicating relationship at an outlet port thereof to the inlet port of said vapor transfer means, for controllably regulating the vapor flow of hydrocarbon effluents to said vapor transfer means in accordance with the hydrocarbon content measurement provided by said sensor means by causing said vapor transfer means to internally circulate the vapor flow of hydrocarbon effluents.