US5623922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulated breathing tube
Assignee: Individual
•
Filing: 1995-01-03
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Granted: 1997-04-29
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Expires: 2015-01-03
Abstract
Abstract The present invention includes a method for preventing heat loss from the inhalent gas in a recirculatory aided breathing circuit thereby reducing internal vapor condensation commonly associated with such breathing circuits while also stabilizing the relative temperature and humidity within such breathing circuits. A thin flexible partially longitudinally compressed casing is provided to surround a thicker corrugated tube to provide an insulating dead air space therebetween. In another arrangement selected enlarged corrugations are provided in spaced relation along the corrugated tube to engage the inner surface of the casing in a preselected spaced arrangement with respect to said corrugated tube to compartmentalize insulating dead air spaces between the tube and the casing.
Inventors
- 👤 Charles A. Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:11
CPC Classifications
A; A62; A62B; A62B9/00; A61; A61M; A61M16/00; A61M16/08; A61M16/0875; A62B9/003; Y; Y10; Y10S; Y10S128/00; Y10S128/911
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
152 words
An insulated breathing tube arrangement having an air impervious corrugated tube for carrying respiratory gases and an outer casing of first internal diameter constituting means for insulating the corrugated tube said corrugated tube being located within said casing and having an outer diameter substantially less than said internal diameter of said casing, said casing being of an overall length greater than the length of said corrugated tube and being sealed at its ends to the ends of the corrugated tube thereby defining an annular insulating dead air space between said corrugated tube and said casing, said casing further being in a slightly longitudinally compressed state relative to said corrugated tube thereby causing said annular dead air space to be of irregular cross section and further providing means for facilitating sharp bends in said tube arrangement said casing further being of a thickness which is less than the thickness of said corrugated tube.
Claim 2
Dependent Claim
152 words
An insulated breathing tube arrangement having an air impervious corrugated tube for carrying respiratory gases and an outer casing of first internal diameter constituting means for insulating the corrugated tube said corrugated tube being located within said casing and having an outer diameter substantially less than said internal diameter of said casing, said casing being of an overall length greater than the length of said corrugated tube and being sealed at its ends to the ends of the corrugated tube thereby defining an annular insulating dead air space between said corrugated tube and said casing, said casing further being in a slightly longitudinally compressed state relative to said corrugated tube thereby causing said annular dead air space to be of irregular cross section and further providing means for facilitating sharp bends in said tube arrangement said casing further being of a thickness which is less than the thickness of said corrugated tube.
Claim 3
Dependent Claim
28 words
The insulating breathing tube arrangement of claim 1 where the ratio of diameters of said corrugated tube and said casing are in the ratio of 1 to 2.20.
Claim 4
Dependent Claim
181 words
An insulated breathing tube arrangement having an air impervious corrugated tube for carrying respiratory gases and an outer casing of first internal diameter for insulating the corrugated tube said corrugated tube being located within said casing and having an outer diameter less than said internal diameter of said casing, said casing being of an overall length greater than the length of said corrugated tube and being sealed at its ends to the ends of the corrugated tube such that the casing is in a slightly longitudinally compressed state relative to said corrugated tube thereby defining an annular insulating dead air space of irregular cross section between said corrugated tube and said casing, the volume of the dead air space between said corrugated tube and said casing per unit length being in ratio to the volume of the corrugated tube per unit of length of in the range of 0.5 to 1.0 to approximately 6.0 to 1.0, said casing further being of smooth of sidewall construction and being of a thickness which is less than the thickness of said corrugated tube arrangement.
Claim 5
Dependent Claim
181 words
An insulated breathing tube arrangement having an air impervious corrugated tube for carrying respiratory gases and an outer casing of first internal diameter for insulating the corrugated tube said corrugated tube being located within said casing and having an outer diameter less than said internal diameter of said casing, said casing being of an overall length greater than the length of said corrugated tube and being sealed at its ends to the ends of the corrugated tube such that the casing is in a slightly longitudinally compressed state relative to said corrugated tube thereby defining an annular insulating dead air space of irregular cross section between said corrugated tube and said casing, the volume of the dead air space between said corrugated tube and said casing per unit length being in ratio to the volume of the corrugated tube per unit of length of in the range of 0.5 to 1.0 to approximately 6.0 to 1.0, said casing further being of smooth of sidewall construction and being of a thickness which is less than the thickness of said corrugated tube arrangement.
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) | 2000-04-28 | 2000-10-28 | 2001-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-04-28 | 2004-10-28 | 2005-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-04-28 | 2008-10-28 | 2009-04-29 | $7700.00 | Window Closed / Lapsed |