Patent ID: 7014218

Claim:
A permanently attached hose coupling, for a pressurized conduit end, having a generally tubular nipple and a generally cylindrical shell permanently attached to said nipple and generally surrounding said conduit end, said nipple having a longitudinal axis, a first end, a second end, a plurality of circumferential grooves located between said first and said second ends, a bore extending from said first end to said second end, and an insert portion adjacent said plurality of grooves inserted into said conduit end; wherein said grooves are dimensioned for affixedly receiving at least one of an inside surface, an end surface and an outside surface of said generally cylindrical shell; and said grooves comprising: a first groove with a generally flat base portion parallel with said longitudinal axis, a first substantially vertically oriented side wall, and a second substantially vertically oriented side wall having a maximum radial extent less than said first side wall; a second groove adjacent said first groove, with a generally flat base portion parallel with said longitudinal axis having a diameter less than said first groove base portion, a first substantially vertically oriented side wall having a maximum radial extent similar to said first groove second side wall, and a second substantially vertically oriented side wall having a maximum radial extent less than said second groove first side wall; and a third groove adjacent said second groove, with a generally flat base portion parallel with said longitudinal axis having a diameter less than said second groove base portion, a first substantially vertically oriented side wall having a maximum radial extent similar to said second groove second side wall and a second substantially vertically oriented side wall having a maximum radial extent greater than said third groove first side wall.