Hose coupling

Claim 1

IN A COUPLING ADAPTED FOR PERMANENT ATTACHEMENT TO AN END OF A PIECE OF TUBING, SAID COUPLING COMPRISING AN ELONGATED AXIALLY APERTURED INSERT MEMBER INCLUDING A SHANK ADAPTED TO BE RECEIVED INTERIORLY OF ONE END OF THE TUBING A DEFORMABLE FERRULE ADAPTED TO BE RECEIVED EXTERNALLY OF THE END OF THE TUBING IN ENCOMPASSING RELATION WITH RESPECT THERETO AND WITH RESPECT TO SAID SHANK, TOOTH MEANS ON THE INTERIOR OF THE FERRULE AND ON THE EXTERIOR OF SAID INSERT MEMBER FOR HOLDING THE TUBING IN POSITIVE ASSEMBLED RELATION WITH THE COUPLING UPON DEFORMATION OF SAID FERRULE, MEANS ON SAID INSERT MEMBER ADAPTED FOR HOLDING COACTION WITH COMPLEMENTARY MEANS ON SAID FERRULE FOR PREVENTING RELATIVE AXIAL MOVEMENT WITH RESPECT TO ONE ANOTHER, AND WHEREIN SAID TOOTH MEANS COMPRISES SUBSTANTIALLY CIRCUMFERENTIALLY EXTENDING RAISED RING MEANS, SAID RAISED RING MEANS ON SAID FERRULE BEING OF AXIALLY SPACED ALTERNATELY GREATER AND LESSER INTERIOR DIAMETERS AND THE RING MEANS ON SAID INSERT MEMBER BEING DISPOSED IN CONFRONTING RELATION WITH ONLY THE GREATER INTERIOR DIAMETER RING MEANS ON SAID FERRULE WHEREBY THE TUBING MATERIAL WILL BE ALTERNATELY STRESSED FIRST IN ONE RADIAL DIRECTION AND THEN THE OTHER.