Patent ID: 6279965
Filing Date: 2001-08-28
Classification: F01N,F16L

Abstract:
A pipe joint for connecting a first fluid pipeline and a second fluid pipeline hermetically, in such a manner that the relative angle therebetween can vary, comprising:a first fluid pipeline having a connecting section;a second fluid pipeline having a connecting section;a ring-shaped sealing ring produced by pressure forming a fine metal wire with a fire-resistant material, comprising an inner circumference sealing surface having a conical tapered shape expanding in diameter towards an open end of the first fluid pipeline, which is provided in the connecting section of the first fluid pipeline;an outer circumference sealing seat having a partially convex surface which is provided in the connecting section of the second fluid pipeline, in a position confronting said ring-shaped sealing ring when said first and second fluid pipelines are connected; andpressure connecting means for causing the inner circumference sealing surface of the ring-shaped sealing ring and said outer circumference sealing seat to contact each other at an area of contact, said contact being under pressure, said area of contact changing in a slidable fashion during varying of said relative angle, said contacting pressure being provided in an elastic manner in a region extending across the connecting sections of both said first and second fluid pipelines.