Patent ID: 6044873
Filing Date: 2000-04-04
Classification: B67D,Y10S

Abstract:
An apparatus for detecting the presence of a vehicle equipped with an onboard refueling vapor recovery system, comprising:a body having an inlet fluid port and an outlet fluid port in fluid communication with said inlet fluid port, said body further having an inlet vapor port in fluid communication with said outlet fluid port;a vacuum chamber located within said body, said vacuum chamber being in fluid communication with said vapor port and said outlet port;a vacuum-activated switch coupled to said body and operably connected to be in communication with said vacuum chamber; anda vacuum-generating nozzle coupled within said body between said inlet port and said vacuum chamber, wherein fuel may be provided to said inlet port and routed through said nozzle to create a vacuum within said chamber and wherein said vapor port may be coupled to a vapor return line, said switch being adjusted to detect the vacuum difference occurring when air is returned through said vapor port rather than fuel vapor.