Pipe joints or couplings – Repair
Patent
1988-11-17
1990-08-21
Arola, Dave W.
Pipe joints or couplings
Repair
285 14, 285297, 285363, F16L 5518
Patent
active
049500007
ABSTRACT:
A system for sealing leaks of flanged pipe couplings comprises providing a peripheral space between faces of the flanges and in the region of that space a loose ring in facing annular grooves of the flange faces. Should a leak occur between the flanges of the coupling the loose ring allows process fluid to escape past the ring to reduce the effect of localized pressure that may otherwise distort or damage the flange faces.
REFERENCES:
patent: 2547321 (1951-04-01), Henderson
patent: 3618989 (1971-11-01), Ito
patent: 3836159 (1974-09-01), Dryer
patent: 4133557 (1979-01-01), Ahlstone
patent: 4268070 (1981-05-01), Adams
patent: 4406481 (1983-09-01), Summerell
patent: 4537425 (1985-08-01), Press et al.
Arola Dave W.
Ericsen Arnold J.
Furmanite International Ltd.
Sylike C. Thomas
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