Abstract: The disclosures relates to a tube coupling (10) for a tube (11) having a body (12) with open ended throughway (13) to receive the tube and a collet (21) in the open end of the throughway having resilient arms (23) engaging a tapered cam surface (20) in the body to clamp the ends of the arms against a tube extending through the collet into the body to lock a tube in the body.The body has a cylindrical outer surface and a cylindrical cover (30) encircles and is slidable along the body. One end of the cover has an end wall (32) extending across the end of the body opposite the open end of the throughway with an aperture (33) through which the tube extends. The other end of the cover has an internal annular projection (35) which snaps over the end of the cylindrical body to retain the cover on the body while permitting the cover to slide linearly along the body.

Abstract: In a coupling formed of two components, one of which has a body portion with a bore having a taper to give a decreasing diameter towards an entry end of the bore, a collet having resilient arms being located in the bore and the second component having a tube adapted for insertion into said collet through the entry end to be gripped thereby, the tapered bore causing the grip to be tightened if the second component is pulled in the outward direction from the bore in the first component, in order to prevent separation of the components after assembly, the collet has a portion protruding out of the first component through said entry end of the bore and the second component has a portion extending around the protruding end of the collet and the two components having surfaces which abut to prevent the collet being pressed inwardly into the bore in the first component by moving the two components towards one another.