Quick coupling connection for hoses

Claim 1

In a quick coupling connection of the type comprising a male element with an outer engagement groove; a receiving portion in the form of a female element to axially receive the male element and provided with two diametrically opposing apertures; an axially slidable collar which embraces the receiving portion of the female element; and interposed between said female element and collar, two teeth, which are inserted into the apertures of the female teeth radially outwardly into engagement with an inner surface of the collar, and wherein the elastic means comprise, two identical annular elements interposed between said strips and in the form of an ellipse with its major axis orthogonal to the axis of the coupling, said annular elements each curving about its major axis, said strips and annular elements being connected to a common circular base ring resting on a widened part of the receiving portion, respective projections on the inner surface of the collar against which said elliptical elastic elements press, and proturberances on said collar for retaining the teeth in their locking position, said collar having beyond said proturberances, widened spaces into which the teeth are inserted by the strips when the teeth are released from the projections.