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Gasoline dispensing and vapor recovery system and method

  • US 5,671,785 A
  • Filed: 05/13/1996
  • Issued: 09/30/1997
  • Est. Priority Date: 08/15/1995
  • Status: Expired due to Fees
First Claim
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1. A vapor recovery system for recovering vapors from a vehicle tank, the system comprising a storage tank, a vapor flow system connecting the vehicle tank to the storage tank for passing a mixture of air and gasoline vapors in the vehicle tank to the storage tank, a device for varying the flow of the mixture from the vehicle tank to the storage tank, a vent pipe extending from the storage tank for venting a mixture of air and gasoline vapors from the storage tank, a flowmeter for measuring the flow of the mixture from the vent pipe, and a control unit operatively connected to the flowmeter and to the flow-varying device for responding to the amount of the mixture flow from the vent pipe and for adjusting the flow-varying device, and therefore the flow of the mixture from the vehicle tank, accordingly.

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