Pipes and tubular conduits – Repairing
Patent
1977-04-14
1978-08-29
Mehr, Milton S.
Pipes and tubular conduits
Repairing
29458, 29451, 29401E, F16L 5518
Patent
active
041096843
ABSTRACT:
A typical pinhole leak that has occurred along the flue pipe of a water heater is quickly and effectively repaired by employing a spring-tempered, sealant-coated cylindrical repair section that is first coaxially positioned inside the flue pipe in a compressed position and that is subsequently triggerably released to spring to an expanded position whereby a permanent sealant layer is formed between the cylindrical repair section and the flue pipe.
REFERENCES:
patent: 2977994 (1961-04-01), Xenis
patent: 3144880 (1964-08-01), Witska
patent: 3267967 (1966-08-01), Guthrie
patent: 3474832 (1969-10-01), Broadhead et al.
patent: 3830260 (1974-08-01), Baviello, Sr.
Hein William E.
Mehr Milton S.
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