ES264381U - Container cap for fluids. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Plug for container fluid containers, characterized in that it comprises a first piece, essentially cylindrical, of a rigid material, adapted to be screwed into the threaded neck of the container, devoid of its bases and provided on the upper part with radial arms that rigidly support a small central discoidal button, a second discoidal piece being strongly attached to said first piece, of a flexible and somewhat elastic material, provided with a flat surface which has at its center a hole whose edges, in the rest position, are applied with a slight pressure on said small central discoidal button so that, when the cap is placed on the container, the mouth of the container is completely sealed, all arranged in such a way that when the pressure inside the container increases, for example by decrease of its volume when realizing a compressive force on its walls, the flat surface of the second piez a essentially discoidal tends to bulge outwards due to the flexibility and elasticity of the material that constitutes it, with which the edges of its central orifice lose contact with the small central button of the first piece, producing then an exit opening of the first part. Fluid contained in the container, which leaves through said central hole of the second mentioned piece until the pressure inside the container yields, at which time everything returns to its initial position of rest and closure. (Machine-translation by Google Translate, not legally binding)