Pipe joints or couplings – With casing – lining or protector – Insulated
Patent
1975-09-05
1976-12-14
Callaghan, Thomas F.
Pipe joints or couplings
With casing, lining or protector
Insulated
1101825, 285226, 285300, 285301, F16L 5102, F16L 5914
Patent
active
039971945
ABSTRACT:
A hermetic expansion joint employing an external bellows and means positioned within the bellows for limiting the relative axial displacements of the conduits being joined in both compression and tension. The expansion joint device has, located within the annular chamber defined by the bellows, a layer of compressible refractory material which bridges the joint between the conduits and a shielding tube which envelopes the compressible refractory material. The expansion joint device is further provided, on oppositely disposed fittings which connect the bellows to the conduits, with means for limiting the axial width of the joint.
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patent: 2406234 (1946-08-01), Marancik et al.
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patent: 3662696 (1972-05-01), Mahr et al.
patent: 3725565 (1973-04-01), Schmidt
patent: 3766868 (1973-10-01), Mahr
patent: 3915482 (1975-10-01), Fletcher et al.
Eifer Gerd
Mahr Rene N.
Mailliet Pierre
Callaghan Thomas F.
S.A. des Anciens Etablissements Paul Wurth
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