Electronically-nonconducting system for the connection of metal

Details Electronically-nonconducting system for the connection of metal Electronically-nonconducting system for the connection of metal

1991-10-31

1992-11-17

Reese, Randolph A.

Pipe joints or couplings

With casing, lining or protector

Insulated

285138, 285294, 285915, 138155, 166 57, 174 85, F16L 2100

Patent

active

051637146

ABSTRACT:
A joint for end-to-end coupling of two tubular elements includes tapered coupling surfaces on the tubular elements which are bonded together by adhesive. The coupling surfaces comprise a plurality of cylindrical sections of gradually increasing and decreasing diameters, respectively. A plurality of axially spaced-apart centering rings are interposed between the tubular elements to provide proper positioning thereof and to facilitate injection of bonding material between the coupling surfaces. A series of axially spaced-apart conducting rings forming part of an antenna surround one of the tubular elements and are insulated therefrom by a layer of bonding material. The conducting rings are separated from each other by toric joints and shims. Openings are provided in one of the tubular elements for injecting the bonding material under pressurized conditions, and an insulating sheath is bonded to inner peripheries of the tubular elements.

REFERENCES:
patent: 1752318 (1930-04-01), White
patent: 1859311 (1932-05-01), McEvoy
patent: 1961762 (1934-06-01), Hinderliter
patent: 3162806 (1964-12-01), Voetter
patent: 3916954 (1975-11-01), Hochhausen
patent: 4153656 (1979-05-01), Bunyan
patent: 4674773 (1987-06-01), Stone
patent: 4692563 (1987-09-01), Lackinger

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