Pipe joints or couplings – End to side or plate – Sput
Patent
1999-07-12
2000-12-12
Wilson, Neill
Pipe joints or couplings
End to side or plate
Sput
2852884, 2851391, 285322, 285351, F16L 500, F16L 4100, F16L 4700
Patent
active
061587834
ABSTRACT:
An improved and cost-effective plug-in coupling for leak-proof attachment of a pressure pipe to a pressure vessel, including a weldable ferrule secured in an opening in the pressure vessel, a plug-in fitting attached to the pressure pipe and having a plug portion inserted into a central bore of the ferrule, a pair of O-rings sealingly engaging the plug portion of the fitting and the central bore of the ferrule, and a snap ring for retaining the plug portion of the fitting in the central bore of the ferrule. The ferrule includes a broad cylindrical head that contacts the outer periphery of the pressure vessel, the ferrule being welded to the pressure vessel at the outer radial periphery of such head to form a leak-proof and durable seal between the ferrule and the pressure vessel. The broad ferrule head absorbs and dissipates the heat from the welding operation, minimizing any heat-related distortion of the central bore. In one embodiment, the central bore of the ferrule includes an outboard portion having a first diameter sized to sealingly receive the plug portion and O-rings, and an inboard portion having a larger diameter, with the snap ring seating on a shoulder defined by the junction between the inboard and outboard portions. In another embodiment, the central bore has constant inside diameter, and the snap ring seats against an inboard axial face of the ferrule.
REFERENCES:
patent: 2306180 (1942-12-01), Myers et al.
patent: 3826523 (1974-07-01), Eschbaugh
patent: 4226445 (1980-10-01), Kramer
patent: 5386923 (1995-02-01), Nakashima et al.
patent: 5524938 (1996-06-01), Halder
patent: 5681060 (1997-10-01), Berg et al.
patent: 5988703 (1999-11-01), Craig
Johnson Welded Products Inc.
Navarre Mark A.
Wilson Neill
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