Patent ID: 6375031
Filing Date: 2002-04-23
Classification: G01F

Abstract:
A container for liquids comprising:a receptacle suitable for containing a liquid, the receptacle comprising a wall portion and a floor portion joined to contain liquid therein, the wall portion comprising an aperture suitable for allowing a substantial portion of the liquid to be viewed therethrough, an outer window crystal configured to overlap the aperture when located thereover; an inner window crystal having substantially the same dimension as the outer window crystal, wherein at least one of the outer window crystal and the inner window crystal comprises a raised portion located substantially around the perimeter of the aperture, the raised portion juxtaposed with the aperture so as to mate with the aperture and protrude through the aperture when located over the aperture; and a sealing ring configured to fit within a space between the inner window crystal and the wall portion when the inner window crystal is located over the aperture; wherein the inner window crystal and the outer window crystal are made of a plastic material, and the raised portion makes substantial contact with the opposing surface of the other window crystal when both are placed in opposing relation around the aperture; wherein the inner window crystal and the outer window crystal are joined together so as to form, in conjunction with the sealing ring, a watertight seal around the aperture of the receptacle.