| http://www.w3.org/ns/prov#value | - A device according to claim 1, wherein said adapter has a flange which overlaps the sides of the aperture on the outer side of the fixed part and which provides a flat surface portion for receiving the connector flange, and wherein said retaining means is a collar having a cylindrical wall with an inwardly directed flange at an inner end of said wall which is trapped between the base member outer
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