Patent ID: 6238552
Filing Date: 2001-05-29
Classification: C02F

Abstract:
A universal filter insert apparatus for a water purifier, said insert apparatus comprising:a. a base portion having a plurality of apertures sized to let water pass therethrough;b. a side wall portion secured to the base portion, the side wall portion having an inner wall and an outer wall which extends above said base portion to form an open ended enclosure therebetween, the side wall portion further having an annular lip encircling an upper portion of said side wall portion;c. a plurality of resilient sealing members stacked about said upper portion, each said resilient sealing member having (i) an internal sealing diameter adapted to engage said annular lip and (ii) a uniquely-shaped annular sealing flange for engaging a filter receiving aperture of a particular water purifier;d. at least one guide slot integrally molded into the outer side of the side wall portion, the guide slot extending from the annular lip to the base portion, the guide slot having a lower extension extending from the outer side of the side wall portion past a central axis of the universal insert filter apparatus;e. a container lid sized to sealingly fit on said resilient sealing members encircling the upper portion of the filter insert, the container lid having a plurality of apertures sized to allow water to pass therethrough;f. a lower filter disposed adjacent to the base portion and the inner wall of the side wall portion, the lower filter being sufficiently porous to allow a fluid to pass therethrough, while restricting passage of a granular filter medium; andg. a granular filter medium disposed between the lower filter, the inner wall of the side wall portion and the container lid.