Pipe joints or couplings – With fluid pressure seal – Flexible lip
Patent
1975-09-30
1977-07-19
Arola, Dave W.
Pipe joints or couplings
With fluid pressure seal
Flexible lip
285359, 285369, F16L 1700
Patent
active
040365123
ABSTRACT:
This invention relates to a pipe joint for the butt jointing of pipes in the form of a sleeve to receive the respective pipe ends and provide a resilient seal between the sleeve and the pipe surfaces, said seal having peripheral lips adapted to effect an increase in sealing engagement by fluid pressure in the pipes.
REFERENCES:
patent: 1474586 (1923-11-01), Hanrahan
patent: 1899695 (1933-02-01), Johnson
patent: 3517951 (1970-06-01), Dunmire
Arola Dave W.
Jeffery Donald D.
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