Sealing ring for connecting the spigot of a corrugated pipe with a pipe socket having a smooth inside wall

Claim 1

A sealing ring made of a rubber-elastic material to provide a media-tight connection between a spigot ( 1 ) of a corrugated pipe ( 2 ) having two adjacent corrugated sections ( 5 , 6 ) having a facing flange ( 7 , 8 ), a foot section ( 9 ) connecting said flanges ( 7 , 8 ) in transition sections; and defining between each other an annular groove ( 18 ) for receiving said sealing ring ( 17 ), and a pipe socket ( 12 ) having a smooth, essentially cylindrical inside wall ( 16 ), which pipe socket is capable of being pushed in a pushing direction ( 32 ) onto said spigot ( 1 ), wherein said sealing ring ( 17 ) is formed mirror-symmetrically and has a basic body ( 19 ) having an inner bead ( 20 , 21 ) bearing against said foot section ( 9 ), having side areas ( 22 , 23 ) facing said flanges ( 7 , 8 ), having an annular seal ( 24 through 27 ) formed on the outer section of each side area ( 22 , 23 ) and projecting laterally towards said flange ( 7 , 8 ), and having an outer sealing bead ( 28 ) for bearing against said inside wall ( 16 ) of said pipe socket ( 12 ), wherein said sealing bead ( 28 ) has a central annular bead ( 29 ) and on both sides one annular collar ( 30 , 31 ), respectively, projecting outwardly and laterally, and wherein said sealing bead ( 28 ) is capable of being rolled in or over in said pushing direction ( 32 ) while elastically deforming said basic body ( 19 ), so that the annular collar ( 30 ) located upstream in said pushing direction ( 32 ) and said annular bead ( 29 ) bear against said inside wall ( 16 ).