Title:
LIQUID ABSORBING FILTER ASSEMBLY AND SYSTEM USING SAME
Document Type and Number:
WIPO Patent Application WO2005072297
Kind Code:
A3
Abstract:
A filter assembly (10, 38, 50, 70, 80, 90) for use in sidestream gas sampling assembly (1). The filter assembly of the present invention includes a hydrophilic liner (20, 20', 54) lining the inner perimeter of a housing (12, 12', 52, 72, 82) for wicking moisture from the gases to be monitored prior to the gases reaching a sensing mechanism. The filter further includes a hydrophobic member (22, 22', 56) positioned downstream of the hydrophilic liner. In one embodiment, the filter further include an absorbent layer (40) positioned between the cylindrical housing and the hydrophilic layer to aid in wicking moisture from the gas stream. In a further embodiment, the hydrophobic member is eliminated and the hydrophilic member is situated such that gas entering the filter assembly must pass through at least a portion the hydrophilic member.
Inventors:
FUDGE BRIAN M
TRIUNFO JOHN A JR
RICH DAVID R
TRIUNFO JOHN A JR
RICH DAVID R
Application Number:
PCT/US2005/002136
Publication Date:
October 20, 2005
Filing Date:
January 20, 2005
Export Citation:
Assignee:
RIC INVESTMENTS LLC (US)
International Classes:
A61B5/097; (IPC1-7): A62B7/10; A62B19/00
Foreign References:
| US5131387A | 1992-07-21 | |||
| US6375854B2 | 2002-04-23 | |||
| US3631654A | 1972-01-04 | |||
| US6783573B2 | 2004-08-31 |
Other References:
See also references of EP 1718369A4
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