Patent ID: 7273235

Claim:
A tube coupler device comprising a body having a bore for receiving the end of a tube and means for retaining the tube in the bore, said means being constituted by an elastically-deformable washer comprising an outer portion placed in a groove formed in the bore, the groove having a sloping downstream wall, and an inner portion subdivided into a plurality of teeth, each possessing a short root portion extending at rest in a radial plane, and an active portion inclined relative to the radial plane, which teeth are interconnected by peripheral connection portions such that the deformation of the peripheral connection portions that results from the washer as a whole being deformed is greater than the deformation of the teeth, the device including an abutment for the teeth when an excessive extraction force is applied to the tube, each tooth being capable of rocking about the abutment, the peripheral portion of the washer then coming to bear against the sloping wall of the groove so that after the active portions of the teeth have rocked about the abutment, their side edges are immediately adjacent to one another in pairs.