Patent ID: 7744684
Filing Date: 2010-06-29
Classification: B01D,Y10S

Abstract:
1. A high capacity gas filter system, comprising: a filter, said filter further comprising: a metal filter housing having a cap end and an opposed end, said filter housing having a filter inlet and a filter outlet, said filter inlet and said filter outlet being in sequential flow communication via a large adsorbent bed portion, a smaller adsorbent bed portion, and a smaller transparent portion, said smaller transparent portion having an indicator portion which extends externally from and then back into said metal filter housing; said smaller adsorbent bed portion comprising a tube which is open at its end toward said cap end of said metal filter housing and not attached to anything at that end; where said transparent portion includes an inner sleeve at least partially surrounded by an outer sleeve, said inner sleeve and said outer sleeve each being sealed circumferentially at one end against said smaller adsorbent bed portion and at their other end against said metal filter housing.