Patent US4309457A successfully refreshed from Google Patents.
Patent US5121746A successfully refreshed from Google Patents.
US5121746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anaesthetic and respirator breathing circuit device
Assignee: Individual
•
Filing: 1991-05-29
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Granted: 1992-06-16
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Expires: 2011-05-29
Abstract
Abstract A simple flexible connector tube for use between an anaesthetic machine or a respirator is described. A flexible corrugated pipe is divided by an internal common wall into a larger and smaller flow passage and is provided with a bayonet type connector at the patient end and at least one of a quick release double friction fit connector at the machine end.
Inventors
- 👤 John R. Sikora
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:33
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/08; A61M16/0816; A61M16/0841; A61M16/0858; A61M16/0833; Y; Y10; Y10S; Y10S128/00; Y10S128/911; Y10S128/912
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
102 words
A connector pipe for use in an anaesthetic or respirator machine between said machine and a patient face mask comprising: (a) a flexible tubular member, substantially circular in cross section, having an interior longitudinally extending substantially planar chordal dividing wall which divides said circular cross section into a larger and a smaller cross section so as to provide first and second fluid flow paths through said tubular member said planar chordal dividing wall being common to both said larger and said smaller cross sections; and (b) means to connect said pipe to said face mask and to said anaesthetic or respirator machine.
Claim 2
Dependent Claim
102 words
A connector pipe for use in an anaesthetic or respirator machine between said machine and a patient face mask comprising: (a) a flexible tubular member, substantially circular in cross section, having an interior longitudinally extending substantially planar chordal dividing wall which divides said circular cross section into a larger and a smaller cross section so as to provide first and second fluid flow paths through said tubular member said planar chordal dividing wall being common to both said larger and said smaller cross sections; and (b) means to connect said pipe to said face mask and to said anaesthetic or respirator machine.
Claim 3
Dependent Claim
17 words
A connector pipe as claimed in claim 1 wherein said tubular member is a corrugated tubular member.
Claim 4
Dependent Claim
38 words
A connector pipe as claimed in claim 2 including longitudinal rib members moulded along an interior wall in said tubular member so as to provide a fluid flow path in the event that said tubular member is crushed.
Claim 5
Dependent Claim
24 words
A connector pipe as claimed in claim 1 wherein said means to connect said pipe to said face mask includes a bayonet type connection.
Claim 6
Dependent Claim
34 words
A connector pipe as claimed in claim 4 wherein said means to connect said pipe to either one of said anaesthetic machine and said respirator machine comprises at least one double friction fit connection.
Claim 7
Dependent Claim
27 words
A connection pipe as claimed in claim 5 wherein said means to connect said pipe to said anaesthetic or respirator machine includes two double friction fit connections.
References Cited (Backward Citations)
CA1007540A
Cited
US4007737A
Cited
US4281652A
Cited
US4391271A
Cited
US4463755A
Cited
US4621634A
Cited
US4637384A
Cited
US4967744A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-06-16 | 1995-12-16 | 1996-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-16 | 1999-12-16 | 2000-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-16 | 2003-12-16 | 2004-06-16 | $7700.00 | Window Closed / Lapsed |