Pipe joints or couplings – With assembly means or feature – Inserted section
Patent
1981-07-27
1983-06-07
Callaghan, Thomas F.
Pipe joints or couplings
With assembly means or feature
Inserted section
285 45, 285302, 285DIG16, 285351, F16L 2100
Patent
active
043867960
ABSTRACT:
There is disclosed a pipe repair coupling including a barrel formed centrally with a hollow cylinder for telescopical receipt therein of a hollow piston. The barrel is surrounded by a protective sleeve and is formed at one extremity with a first fitting and at the opposite extremity with a neck portion. The piston is formed in its exterior with a plurality of annular O-ring grooves which receive O-rings for dynamic sealing engagement with the interior wall of the barrel. Telescoped within the hollow piston in the area of the O-rings is a tubular stiffener which supports the walls of such piston against radial inward collapse. Consequently, the piston may be telescoped into the cylinder to facilitate connection of the cylinder fitting to an end of a pipe which is aligned axially with a second end spaced therefrom. Such second end may then be easily connected with a fitting formed on the end of the free end of such piston.
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patent: 4350372 (1982-09-01), Logsdon
Hill Donald C.
Lyall Robert W.
Callaghan Thomas F.
R. W. Lyall & Co., Inc.
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