Patent US2491678A successfully refreshed from Google Patents.
Patent US3653379A successfully refreshed from Google Patents.
US3653379A
Expired / Lapsed
US
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Adjustable pressure ippb ventilator
Assignee: Individual
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Filing: 1970-08-20
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Granted: 1972-04-04
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Expires: 1990-08-20
Abstract
Abstract A breathing apparatus in which gas is delivered to a patient under pressure intermittently. Air or oxygen delivered into a venturi tube includes an adjustable nozzle for changing pressure as required for a particular patient''s demand.
Inventors
- 👤 Joseph G Glenn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:52
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/10; A61M16/12; A61M16/122; A61M16/125; A61M16/127; A61M16/021; A61M16/022; A61M16/08; A61M16/0816; A61M16/0841; A61M16/0858; A61M11/00; A61M11/06; A61M16/0057; A61M16/0063; A61M16/0003; A61M2016/0027
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
103 words
Apparatus for IPPB therapy comprising: a body portion defining therein a gas flow passage chamber and a downstream orifice; a mouthpiece attached downstream of said orifice; a manifold received within said chamber and slidable therein toward and sway from said orifice, said manifold including a nozzle at its forward end directed toward the center of said orifice; an inlet conduit providing communication with said nozzle and a pressure gas source; an exhaust conduit and port in communication with said inlet conduit rearwardly of said nozzle, and a plurality of circumferentially spaced openings in said manifold providing communication from the atmosphere to said chamber.
Claim 2
Dependent Claim
103 words
Apparatus for IPPB therapy comprising: a body portion defining therein a gas flow passage chamber and a downstream orifice; a mouthpiece attached downstream of said orifice; a manifold received within said chamber and slidable therein toward and sway from said orifice, said manifold including a nozzle at its forward end directed toward the center of said orifice; an inlet conduit providing communication with said nozzle and a pressure gas source; an exhaust conduit and port in communication with said inlet conduit rearwardly of said nozzle, and a plurality of circumferentially spaced openings in said manifold providing communication from the atmosphere to said chamber.
Claim 3
Dependent Claim
21 words
Apparatus of claim 1 including means to retain said manifold and nozzle in a desired axial position relative to said orifice.
Claim 4
Dependent Claim
29 words
Apparatus of claim 1 including a medicament nebulizer between said mouthpiece and said outlet passageway, and a conduit to supply said gas from said inlet conduit to said nebulizer.
Claim 5
Dependent Claim
10 words
Apparatus of claim 1 wherein said orifice is a venturi.
Claim 6
Dependent Claim
179 words
Apparatus for IPPB therapy comprising: a body portion defining therein a gas flow passagEway chamber and a downstream orifice; a mouthpiece attached downstream of said orifice; a manifold received within said chamber and slidable therein toward and away from said orifice said manifold including: a nozzle at its forward end directed toward the center of said orifice; an inlet conduit providing communication with said nozzle and a pressure gas source; a plurality of circumferentially spaced openings in said manifold to provide communication from the atmosphere to said chamber; an electrically timed means to control flow of said gas to said inlet conduit including: means to sense the pressure of said gas downstream of said orifice; means responsive to said pressure sensing means to activate an electrical circuit at a first pressure and deactivate said circuit at a second higher pressure; and valve means responsive to said electrical circuit at said first pressure to cause the flow of said gas to said inlet conduit and response at said second pressure to stop the flow of said gas to said inlet.
Claim 7
Dependent Claim
179 words
Apparatus for IPPB therapy comprising: a body portion defining therein a gas flow passagEway chamber and a downstream orifice; a mouthpiece attached downstream of said orifice; a manifold received within said chamber and slidable therein toward and away from said orifice said manifold including: a nozzle at its forward end directed toward the center of said orifice; an inlet conduit providing communication with said nozzle and a pressure gas source; a plurality of circumferentially spaced openings in said manifold to provide communication from the atmosphere to said chamber; an electrically timed means to control flow of said gas to said inlet conduit including: means to sense the pressure of said gas downstream of said orifice; means responsive to said pressure sensing means to activate an electrical circuit at a first pressure and deactivate said circuit at a second higher pressure; and valve means responsive to said electrical circuit at said first pressure to cause the flow of said gas to said inlet conduit and response at said second pressure to stop the flow of said gas to said inlet.
Claim 8
Dependent Claim
28 words
Apparatus of claim 5 wherein said means responsive to said pressure activates a timer which controls said valve and the flow of said gas for a desired period.
Claim 9
Dependent Claim
10 words
Apparatus of claim 5 wherein said orifice is a venturi.
Claim 10
Dependent Claim
23 words
Apparatus of claim 5 wherein said means responsive to said pressure is adjustable to a desired first pressure and a desired second pressure.
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) | 1975-04-04 | 1975-10-04 | 1976-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-04 | 1979-10-04 | 1980-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-04 | 1983-10-04 | 1984-04-04 | $7700.00 | Window Closed / Lapsed |