Patent ID: 6395170
Filing Date: 2002-05-28
Classification: B01D,C02F

Abstract:
A portable liquid filter for use with a bottle and a bottle closure having a bottom surface, wherein the filter comprises no means of attachment to the bottle and no means of attachment to the closure, said filter comprising:(a) a container having a top end and a bottom end for being received inside a bottle neck having a top end; (b) a filter media received by said container and having a top end, a bottom end and an outer surface; and (c) a flange system connected to said top end of said container for holding said container in the bottle neck and comprising: (i) a generally horizontal annular portion having an upper surface, an inner surface and a lower surface, wherein said horizontal annular portion extends between and forms a seal with the top end of said bottle neck and the bottom surface of said bottle closure; (ii) a first generally vertical annular portion having an inner surface circumjacent to the outer surface of said filter media and an outer surface; (iii) a second generally vertical annular portion having an inner surface radially spaced from said outer surface of said first vertical annular portion thereby forming an annular space therebetween and which is substantially perpendicular to said horizontal annular portion, wherein said second vertical annular portion has an outer surface having an outer diameter which gradually increases until it meets said lower surface of said horizontal annular portion thereby forming an outwardly slanted area for sealing with the bottle neck; and (iv) a third generally vertical annular portion formed integrally with a lower end of each of said first and second vertical annular portions and defining a bottom of said annular space, said third vertical annular portion including an outer surface abutting an inner surface of said container.