Tapping sleeve for large size pipe

Details Tapping sleeve for large size pipe Tapping sleeve for large size pipe

1976-09-22

1978-06-27

Callaghan, Thomas F.

Pipe joints or couplings

End to side or plate

Saddle-type clamp

285110, F16L 4100

Patent

active

040970736

ABSTRACT:
A tapping sleeve for mounting on an in-service pipe under pressure in which a pipe opening is to be formed. The sleeve comprises upper and lower sleeve halves, one of which supports an endless gasket adapted to provide a pressure seal about the branch opening when formed in the pipe. Contained in the lower sleeve half are a plurality of arcuately displaced longitudinally extending metal pads mounted for articulation and adapted to support the pipe against internal pressure forces. The pipe engaging surfaces of the pads are inwardly curved approximating the pipe radius and are sufficiently deformable to enable surface conformance with the circumferential curvature of pipe wall in distributing the unit force loading therefor.

REFERENCES:
patent: 2332350 (1943-10-01), Scritchfield
patent: 2790652 (1957-04-01), Risley et al.
patent: 3527483 (1970-09-01), Dashner
patent: 3635503 (1972-01-01), Rafalski
patent: 3807435 (1974-04-01), Fenster et al.
patent: 3840255 (1974-10-01), Daghe

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