Oy All-plast Ab

Kalervo Mannisto

Heikki Masalin

Eero Saarinen

A pipe coupling with a water seal between the sinks of a draining board and the drain pipe (9), comprising a collecting pipe (4) having connected thereto one or a plurality of jointing pipes (3) for sink connecting tubes (2) and a water seal forming pipe element (7) as well as a jointing pipe (6) for said drain pipe (9). In order to facilitate the manufacture of a pipe coupling with a single mould and in a single working cycle, said collecting pipe (4), said jointing pipes (3, 6) and water seal (5, 7) are designed as a single integral tubular unit, wherein the water seal comprises a straight pipe element (7), fitted with a partition (5) and extending downwards to provide a water seal compartment below the plane of said collecting pipe.

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Vantaa, Finland

Kalervo Mannisto