US5592933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hygroscopic cartridge particularly for filters for medical use
Assignee: Dar SpA
•
Filing: 1993-07-19
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Granted: 1997-01-14
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Expires: 2013-07-19
Abstract
Abstract The hygroscopic cartridge (1) particularly for filters for medical use, has a band-like element (2) which is wound to form a flat bobbin (7). The band-like element (2) has a first band (3), formed with corrugations (4) which extend in a transverse direction with respect to the longitudinal extension of the band-like element (2) and made of a heat-conducting plastically deformable material, and a second layer (5) impregnated with hygroscopic salts. The corrugations (4) define small channels (8) for allowing the passage of an aeriform flow in a transverse direction with respect to the plane of lay of the flat bobbin (7).
Inventors
- 👤 Giuseppe Zucchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:01
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/26; B01D53/261; A; A61; A61M; A61M16/00; A61M16/10; A61M16/1045; B01D46/00; B01D46/0002; B01D46/0012; B01D46/0027; B01D46/003; B01D46/0036; B01D46/10; B01D46/56; B01D46/62; B01D46/64; B01D53/02; B01D53/04; B01D53/0407; B01D53/0415; B01D2253/00; B01D2253/25; B01D2253/30; B01D2253/34; B01D2257/00; B01D2257/80; B01D2259/00; B01D2259/45; B01D2259/4533; B01D2275/00; B01D2275/10; B01D2275/105; B01D53/0438
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
109 words
Hygroscopic cartridge particularly for filters for medical use, comprising a band-like element which is wound to form a flat bobbin, characterized in that said band-like element comprises a first layer, having corrugations which extend in a transverse direction with respect to the longitudinal extension of said band-like element and made of a heat-conducting plastically deformable material, and a second layer impregnated with hygroscopic salts, said corrugations defining channels for an aeriform flow in a transverse direction with respect to the plane of lay of the flat bobbin, wherein said corrugations are constituted by mutually parallel undulations, said undulations being inclined with respect to the longitudinal axis of said bobbin.
Claim 2
Dependent Claim
109 words
Hygroscopic cartridge particularly for filters for medical use, comprising a band-like element which is wound to form a flat bobbin, characterized in that said band-like element comprises a first layer, having corrugations which extend in a transverse direction with respect to the longitudinal extension of said band-like element and made of a heat-conducting plastically deformable material, and a second layer impregnated with hygroscopic salts, said corrugations defining channels for an aeriform flow in a transverse direction with respect to the plane of lay of the flat bobbin, wherein said corrugations are constituted by mutually parallel undulations, said undulations being inclined with respect to the longitudinal axis of said bobbin.
Claim 3
Dependent Claim
17 words
Hygroscopic cartridge according to claim 1, characterized in that said first layer is made of aluminium foil.
Claim 4
Dependent Claim
112 words
Filter for medical use, characterized in that it comprises a filter body provided with conduits and defining a portion for housing a hygroscopic cartridge constituted by a band-like element made of a first layer, having corrugations which extend in a transverse direction with respect to the longitudinal extension of said band-like element and made of a heat-conducting plastically deformable material, and a second layer impregnated with hygroscopic salts, said corrugations defining channels for an aeriform flow in a transverse direction with respect to the plane of lay of the cartridge, wherein said corrugations are constituted by mutually parallel undulations, said undulations being inclined with respect to the longitudinal axis of said cartridge.
Claim 5
Dependent Claim
112 words
Filter for medical use, characterized in that it comprises a filter body provided with conduits and defining a portion for housing a hygroscopic cartridge constituted by a band-like element made of a first layer, having corrugations which extend in a transverse direction with respect to the longitudinal extension of said band-like element and made of a heat-conducting plastically deformable material, and a second layer impregnated with hygroscopic salts, said corrugations defining channels for an aeriform flow in a transverse direction with respect to the plane of lay of the cartridge, wherein said corrugations are constituted by mutually parallel undulations, said undulations being inclined with respect to the longitudinal axis of said cartridge.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-01-14 | 2000-07-15 | 2001-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-01-14 | 2004-07-15 | 2005-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-01-14 | 2008-07-15 | 2009-01-14 | $7700.00 | Window Closed / Lapsed |