Pipe connecting structure

Details Pipe connecting structure Pipe connecting structure

2003-12-26

2008-11-18

Hewitt, James M (Department: 3679)

Pipe joints or couplings

With casing, lining or protector

Lined

C285S347000, C285S382000, C285S423000

Reexamination Certificate

active

07452004

ABSTRACT:
A pipe connecting structure which can prevent electrical charge of a plastic coated metal pipe using a simple structure. The structure includes beads5a, 5b, 5cprotruding from the outer surface of the end of a plastic coated metal tube3, which is obtained by coating the outside of a bare metal pipe1with a nonconductive plastic film2. The plastic film2is removed from the tip of the bead5ato expose the circumferential surface of the bare metal pipe1, the exposed portion is made to contact the inner surface of a conductive tube4, and the plastic coated metal tube3and the conductive tube4are connected together.

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