Pipe joint structure and method for fabricating the same

Details Pipe joint structure and method for fabricating the same Pipe joint structure and method for fabricating the same

2003-06-30

2008-12-30

Hewitt, James M (Department: 3679)

Pipe joints or couplings

Having plural independent paths

Parallel paths

C285S124400, C285S124500, C285S137110, C285S382000, C285S382500

Reexamination Certificate

active

07469934

ABSTRACT:
A pipe joint structure capable of reducing the joint height (H) and fabrication costs has a connection flange member provided with a through hole piercing the thickness of the flange member. A polygonal enlarged recess greater than the inner diameter of the through hole is formed at one end of the through hole. Meanwhile, an annular protrusion protruding radially outward is formed near an end of a pipe having an outer diameter capable of insertion into the through hole. This annular protrusion has an outer diameter greater than the incircle diameter of the polygonal enlarged recess. The annular protrusion is press-fitted and fixed to the polygonal enlarged recess.

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French Search Report dated Oct. 15, 2004 in French Application No. 0307936.

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