Pipe joints or couplings – With casing – lining or protector – Insulated
Patent
1984-07-13
1986-09-23
Scanlan, Jr., Richard J.
Pipe joints or couplings
With casing, lining or protector
Insulated
285 48, 285177, 285138, 285149, 285417, 174 88C, F16L 1112
Patent
active
046131663
ABSTRACT:
Two tube systems, each comprised of two or more concentrically arranged metal tubes, are positively and electrically conductive interconnected through a coupler sleeve system composed of a corresponding number of concentrically arranged coupler sleeves of slightly larger diameter such that ends of the sleeves of the coupler sleeves are threaded upon ends of the tubes of the tube systems to be interconnected.
REFERENCES:
patent: 528291 (1894-10-01), Cummings
patent: 582910 (1897-05-01), Groshans
patent: 1731171 (1929-10-01), Miller
Kabel- und Metallwerke Gutehoffnungshuette
Scanlan, Jr. Richard J.
Siegemund Ralf H.
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