Pipe joints or couplings – End to side or plate
Reexamination Certificate
2005-03-08
2005-03-08
Hewitt, James M. (Department: 3679)
Pipe joints or couplings
End to side or plate
C285S285100, C285S288100, C285S416000, C285S423000
Reexamination Certificate
active
06863315
ABSTRACT:
In order to attach a fuel system component such as a pipe nipple to a fuel tank having a polyethylene outer layer, the fuel system component is made from a first material which may have desirable characteristics such as resistance to creep, but which may not be easily weldable to the polyethylene outer layer of the tank. The flange member is used for attachment to the body portion of the fuel system component by welding and for attachment to the polyethylene layer of the tank. To inhibit hydrocarbon vapour flow through through the flange member, the flange member includes a barrier layer which extends from one side of the flange to the other and which surrounds the central aperture. In another embodiment of the invention, the flange member is made from a material which has the necessary barrier properties.
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Bereskin & Parr
Hewitt James M.
Salflex Polymers Ltd.
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