Patent ID: 8408047

Claim:
For a fuel tank filler neck for delivering fuel to a fuel tank of a motor vehicle and having a fuel cap retaining lip extending around an open end thereof, the combination comprising; source of pressure; a source of vacuum; a supply hose to be connected to either one of said source of pressure or said source of vacuum; and a universal adaptor by which to couple said, supply hose to the fuel tank filler neck to create one of a pressure delivery path to the fuel tank when said supply hose is connected to the source of pressure or a suction path from the fuel tank when said supply hose is connected to the source of vacuum in order to test the fuel tank for leaks, said universal adapter including a rim that is sized to surround the fuel cap retaining lip of the filler neck, said rim having a sealing surface that lies in sealing engagement against the fuel cap retaining it and entirely outside the fuel tank filler neck, said universal adapter also including an inlet tube detachably connected to said supply hose, said net tube adapted to be disconnected from said supply hose after said supply hose is connected to one of said source of pressure or said source of vacuum, and said inlet tube further adapted to be reconnected to said supply hose when said supply hose is connected to the other one of said source of pressure or said source of vacuum.