Pipe joints or couplings – With assembly means or feature – Inserted section
Patent
1975-07-07
1977-07-12
Callaghan, Thomas F.
Pipe joints or couplings
With assembly means or feature
Inserted section
285419, 285423, 285DIG16, 285DIG22, F16L 4702
Patent
active
040350029
ABSTRACT:
A coupling for unthreaded pipes of a sprinkler system, which permits the replacement of a small damaged pipe section without bending the pipes already emplaced in the ground. One coupling includes an end cap that can be installed on the end of a first pipe to be joined, and a sleeve which can slide over the second pipe and over the end cap for adhesive mounting thereto. A flexible wedge ring is sandwiched between the sleeve and cap.
REFERENCES:
patent: 776310 (1904-11-01), Finley
patent: 3466066 (1969-09-01), Dawson
patent: 3826521 (1974-07-01), Willhelmsen
patent: 3857588 (1974-12-01), Curtin
patent: 3909045 (1975-09-01), Meagher
Callaghan Thomas F.
Lindenberg Freilich
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