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Fuel vapor recovery system

  • US 5,217,051 A
  • Filed: 11/12/1991
  • Issued: 06/08/1993
  • Est. Priority Date: 11/12/1991
  • Status: Expired due to Term
First Claim
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1. Apparatus for recovering vapor in a fuel dispensing system, said apparatus comprising:

  • an inner hose and an outer hose, said inner hose being disposed within said outer hose;

    a first turbine disposed within said inner hose; and

    a second turbine disposed outside said inner hose and inside said outer hose, said first turbine and said second turbine being coupled so that rotation of one of said turbines caused by fuel flowing powers rotation of the other of said turbines thereby causing vapor recovery, said turbines being cylindrical and each rotating about a longitudinal axis and installed within said hoses longitudinally with said longitudinal axes being parallel to the direction of fuel and vapor flow.

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