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Vapor passage fuel blockage removal

  • US 4,967,809 A
  • Filed: 03/29/1989
  • Issued: 11/06/1990
  • Est. Priority Date: 12/02/1985
  • Status: Expired due to Term
First Claim
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1. In a system for dispensing gasoline fuel into a vehicle fuel tank, said system including a dispenser pump, a nozzle, a fuel hose connecting said dispenser pump to said nozzle, a vapor recovery hose surrounding said fuel hose and defining an annular vapor passage with said fuel hose for conducting fuel vapors from the fuel tank to a storage reservoir, said fuel hose and vapor recovery hose adapted to form at least one looped low portion during dispensing of fuel into a fuel tank whereat condensed fuel vapors tend to collect in said vapor recovery passage, the improvement comprising;

  • a venturi means including an elongated block adapted for serial connection with said fuel hose within said vapor recovery hose at said at least once looped portion, said venturi means including a venturi throat which forms part of the fuel conduit from said fuel dispenser pump to said nozzle; and

    at least one port means in said elongated block for providing communication between said annular passage and said venturi throat.

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