Pipe joints or couplings – Repair
Patent
1993-02-17
1994-12-27
Nicholson, Eric K.
Pipe joints or couplings
Repair
138 99, 285373, 285110, F16L 5516
Patent
active
053758889
ABSTRACT:
A pipe coupling for repair, includes separate housings and seal rings to be accommodated in the receiving portions formed in the housings, a holding portion being formed on the internal diameter side of the separate end face in the individual housing to receive the projecting seals formed at the separate ends of the above seal rings and the seal rings forming multiple string-shaped ring seals as a single unit between both ends of the above projecting seals by surrounding the portion to be repaired, and having a blocking plug in the above housing for a hole to test the sealing conditions after fixing to a pipe.
REFERENCES:
patent: 3550638 (1970-12-01), Smith
patent: 4049296 (1977-09-01), Harrison
patent: 4568091 (1986-02-01), Harrison
patent: 4653782 (1987-03-01), Munday
patent: 4927181 (1990-05-01), Ciotola
patent: 4927182 (1990-05-01), Moore
patent: 5118139 (1992-06-01), Lott
Nicholson Eric K.
The Victaulic Company of Japan Limited
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