Patent ID: 6428055
Filing Date: 2002-08-06
Classification: F16L

Abstract:
A connection unit of a releasable quick coupling for connection to the end of a metal pipeline, said end being expanded step-wise, comprising:a cylindrical housing head defining a receiving space for the insertion of a tubular inserting part which is provided with an encircling retaining rib and having a separate retaining element with movable retaining edges directed radially into the receiving space to catch behind the retaining rib upon insertion of the inserting part; a connecting sleeve formed on said housing head, said connecting sleeve being insertable into the end of the metal pipeline and anchorable there together with at least one sealing ring lying sealingly on the inserting part characterized by the fact that detent means on the housing head are formed for locking a radially outwardly bent rim of the end of the metal pipeline and said sealing ring can be positioned in front of a frontal side of the connecting sleeve by a supporting sleeve and during the insertion of the connecting sleeve can be inserted into the end of the pipeline while the supporting sleeve is simultaneously pushed backwards over the connecting sleeve.