Pipe joints or couplings – With fluid pressure seal – Flexible lip
Patent
1975-09-30
1979-06-19
Callaghan, Thomas F.
Pipe joints or couplings
With fluid pressure seal
Flexible lip
285197, F16L 4100
Patent
active
041584619
ABSTRACT:
This invention provides a pipe tapping band of the type formed in two halves adapted to be clamped about a pipe to be tapped, one band half having an internally threaded integral ferrule to receive conventional pipe tapping means, a recess in the inner surface of the tapping band around the ferrule aperture, said recess arranged to receive and locate an apertured resilient seal between the tapping band and the outer surface of the pipe about an aperture formed therein and with said seal having peripheral lips arranged to provide sealing engagement with the tapping band and the outer surface of the pipe about the aperture therein.
REFERENCES:
patent: 1459030 (1923-06-01), Mueller
patent: 2643138 (1953-06-01), Jacobs et al.
patent: 3134613 (1964-05-01), Regan
patent: 3360284 (1967-12-01), Ver Nooy
patent: 3362730 (1968-01-01), St. Clair et al.
patent: 3471176 (1969-10-01), Gilchrist
patent: 3489441 (1970-01-01), Malcolm
patent: 3840255 (1974-10-01), Daghe
Callaghan Thomas F.
Jeffery Donald D.
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