Pipe joints or couplings – With assembly means or feature – Inserted section
Patent
1987-06-22
1989-03-07
Callaghan, Thomas F.
Pipe joints or couplings
With assembly means or feature
Inserted section
285156, 285179, 285226, 285227, 285235, 285423, 285915, F16L 4100, F16L 4700
Patent
active
048100080
ABSTRACT:
An improved lawn sprinkler fitting is provided for repairing leaks in lawn sprinkler systems and for replacing leaky components in such systems. The improved fitting of the invention is a tubular coupling having opposite annular ends formed with wall thicknesses which are sufficient to maintain the shape of predetermined circular openings therethrough. At least one intermediate annular corrugated section is disposed between the opposite ends and has a wall thickness less than the wall thickness of the opposite ends. The intermediate section is both longitudinally compressible and longitudinally extendible. The intermediate section of the coupling is compressed to allow the coupling to be inserted between exposed ends of buried lawn sprinkler pipe. A solvent type adhesive is applied to the exposed ends of the pipe and the intermediate section of the coupling is extended, thereby bringing the annular ends of the coupling into contact with the exposed ends of the buried pipe. Contact of the coupling ends with the exposed ends of the buried pipe effectuates solvent welding of the coupling ends to the exposed water pipe ends, thereby providing a leak proof seal.
REFERENCES:
patent: 2406234 (1946-08-01), Marancik et al.
patent: 3695643 (1972-10-01), Schmunk
patent: 3850459 (1974-11-01), Blumenkranz et al.
patent: 3873137 (1975-03-01), Yamaguchi
patent: 3970334 (1976-07-01), Campbell
patent: 4035002 (1977-07-01), Curtin
patent: 4081190 (1978-03-01), Itzler
patent: 4099744 (1978-07-01), Kutnyak et al.
patent: 4314717 (1982-02-01), Bjurman
patent: 4350372 (1982-09-01), Logsdon
patent: 4429907 (1984-02-01), Timmons
Callaghan Thomas F.
Thomas Charles H.
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