Vapor recovery system accommodating ORVR vehicles

  • US 6,095,204 A
  • Filed: 10/14/1997
  • Issued: 08/01/2000
  • Est. Priority Date: 03/20/1996
  • Status: Expired due to Fees
First Claim
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1. A fuel dispensing nozzle for delivering fuel into a fuel tank by way of a fill pipe, said nozzle comprisinga nozzle body,a spout housing,a spout extending from said spout housing,a fuel conduit defined by said nozzle and leading to said spout,a vapor conduit defined by said nozzle, said vapor conduit associated with said spout for withdrawing displaced vapors from the fuel tank being filled and transporting them to a remote vapor collection system,a fuel valve for controlling flow of fuel through said fuel conduit,a boot disposed about said spout and having a first closed end and a second open end, said second open end defined by a rim disposed for sealing engagement with a surface about a fuel tank fill pipe when said spout is inserted therein, said boot having a body portion defining a volume for receiving fuel vapor displaced from a fuel tank during delivery of fuel, said volume in communication with said vapor conduit,vapor flow controlling means comprising a vapor flow control valve element disposed for movement within said vapor conduit relative to a valve seat defined by said conduit, and vapor flow control valve element positioning means comprising sealing means associated with said vapor flow control valve element, said sealing means having at least one surface exposed to fuel pressure in said fuel conduit, and,for accommodating onboard refueling vapor recovery equipped vehicles, said fuel dispensing nozzle further comprising means for vacuum and pressure relief of said vapor recovery conduit disposed for communication of said vapor recovery conduit with an ambient region external of said nozzle through an external surface of said nozzle.

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