Patent ID: 7201840
Filing Date: 2007-04-10
Classification: B01D,C02F

Abstract:
1. In a fluid treatment device of the type comprising a container, said container having a filter, and said container having first and second chambers, the improvement wherein: a) said filter is positioned in said first chamber; b) a connecting element is provided, said connecting element being configured for connecting said first chamber to said second chamber for permitting fluid to travel from said first chamber though said filter and into said second chamber; c) a removable and replaceable cap is provided for said first chamber; d) said removable and replaceable cap has a gear counter mechanism; e) a ratchet indexing element is provided on said removable and replaceable cap for indexing said gear counter mechanism when said removable and replaceable cap is replaced after said removable and replaceable cap has been removed for refilling said first chamber; f) said gear counter mechanism includes a gear having a sequentially changing visual color coding system for indicating the present status of the filter; g) said visual color coding system has at least two color changes; h) said gear counter mechanism indicating when to replace said filter and having at least two selective counter cycles, each cycle having a unique maximum number of cap replacements, said at least two selective counter cycles including at least two ratchet wheels, and a shiftable, selective pawl follower provided for selecting one of said at least two ratchet wheels; i) said cap has a window for viewing said sequentially changing visual color coding system; j) said removable and replaceable cap has a top and bottom; and k) said ratchet indexing element includes a hub handle on the bottom of said cap for indexing when said cap is removed.