Patent ID: 6827241
Filing Date: 2004-12-07
Classification: B65D

Abstract:
A sealing device for a container comprising a diaphragm valve consisting of a seat-forming part forming a valve seat part forming the valve seat, in which said seat-forming part a duct for flow of a product contained in the container is made, and of a diaphragm made of elastically deformable material fitted closely over said seat-forming part; said diaphragm, through elastic deformation, a result of pressure exerted on the product contained in the container allows said product to flow out between the diaphragm and said seat-forming part, and in the absence of such pressure, presses against said seat-forming part to shut off the flow of product and close the container in a sealed manner;wherein: said seat-forming part has a conical or cylindro-conical overall shape and has a cross section which increases toward the a first orifice via which the product flows out of said valve; said diaphragm has a conical or cylindro-conical overall shape corresponding to that of said seat-forming part, said shape being such that said diaphragm can be fitted closely onto or into said seat-forming part, and said diaphragm and said container comprise respective bearing means collaborating with one another when the sealing device is mounted on the container so as to hold the diaphragm in its position of close fitting onto or into said seat-forming part.