Vented roof drain insert

An improved vented drain insert (10) for insertion into a larger diameter drain pipe (22), preferably, a roof drain pipe. The insert has a tubular portion (24) which extends into the drain pipe (22) forming an annular restriction in the primary passageway through the drain pipe. A vent tube (102) is...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	UGLOW, JOHN P
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BUILDING FIXED CONSTRUCTIONS GUTTERS ROOF COVERINGS ROOF-WORKING TOOLS SKY-LIGHTS
Online-Zugang:	Volltext bestellen
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