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公开(公告)号：US20210239251A1
公开(公告)日：2021-08-05
申请号：US17049131
申请日：2019-04-24
发明人： Robert Blossé , Susanne Leddig-Bahls , Sven Loogen , Jens Wahr
摘要： To produce pipe connections to conduits (10), such as drinking water main lines which have been remediated using a liner (12), a pipe clamp (20) is attached after a bore (21) has been made, and is secured with a clamping strap (22), for example. A pipe connection adapter (14) with a flange collar (15) and a seal (34) arranged thereon is introduced from the inside of the pipe (10). The anti-rotation device (29) between the pipe clamp (20) and the pipe connection adapter (14) ensures that the latter assumes a precisely defined position, such that its flange collar (15), with a shape corresponding to the intersection curve of the conduit/bore, provides a seal on the liner (12) exactly on the edge (21) of the bore.
It is also proposed to insert the connector from the outside of the conduit (10). For this purpose, the end region (41) of the pipe connection adapter (14) towards the conduit is flexible and can either be compressed to the bore diameter via glide surfaces (48) or can be produced or prepared with a diameter-reduced end region (41) and then expanded into the sealing position by means of an inner sleeve. In each case, the end region (41) is surrounded by an elastomeric, flexible sheathing (38) which, preferably in a 2-component injection molding process, was connected by a material bond to the main body (40) of the pipe connection adapter (14).
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