Dielectric joint, particularly for metallic conduits for liquids

Pipe joints or couplings – With casing – lining or protector – Insulated

Patent

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Details

285 52, F16L 1112

Patent

active

049271865

ABSTRACT:
The joint comprises a first end portion to be coupled and shaped like a sort of cup, in which a second portion, shaped like a flange, and to be joined to the first one, is insertable, wherein the second portion is internally occupied for a section by a precision seating recess, for a cylindrical element of highly insulating material, and flush to the inner wall of the conduit. The end of the cylindrical element, facing towards the bottom of the cup, has a radially directed annular projection for the constant separation of the flange from the bottom of the cup, the projection axially and sealingly engaging with an annular gasket, and being provided with a collar for the blocking therein. The gasket is interposed between the side of the flange facing towards the bottom of the cup and the cup, and between the inner lateral walls thereof, the gasket being also provided with position blocking teeth, between the outer walls of the flange and the inner walls of the cup there being furthermore placed elements for the electric insulation and the stiffening of the joint.

REFERENCES:
patent: 997087 (1911-07-01), Peeples
patent: 2837351 (1958-06-01), Bailey
patent: 3853337 (1974-12-01), Herbert et al.

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