Patent ID: 7032933

Claim:
A pipe connecting device ( 1 ) designed for detachable, sealing assembly of two pipe ends ( 2 , 3 ), which device consists of an outer part ( 14 , 54 ) and an inner part ( 4 ) inserted axially into the outer part ( 14 , 54 ) and co-operating therewith, which inner part ( 4 ) on its inside direct or indirect is connected to the first pipe end ( 3 ), the co-operating contact surfaces ( 10 a , 10 b ) of both the inner part ( 4 ) and the outer part ( 14 , 54 ) being conical in shape, and means ( 11 ) being arranged to prevent axial movement between the conical contact surfaces ( 10 a , 10 b ), that the means ( 11 ) preventing axial movement comprise the two conical contact surfaces ( 10 a , 10 b ) being provided with a co-operating thread profile, characterized in that the outer part ( 14 , 54 ) is arranged to expand radially to internal attachment towards the other pipe end ( 2 ) by screwing the inner part ( 4 ) into the outer part ( 14 , 54 ), the outer part ( 14 ) comprises a primary part ( 17 ) and a secondary part ( 18 ), one end of which is concentrically connected via a breaking ring ( 21 ) to one end of the primary part ( 17 ).