Patent US3863630A successfully refreshed from Google Patents.
US3863630A
Expired / Lapsed
US
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Respiratory apparatus
Assignee: Synthelabo SA
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Filing: 1972-11-07
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Granted: 1975-02-04
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Expires: 1992-11-07
Abstract
Abstract Respiratory apparatus comprising a multistage air displacing turbine driven by an electric motor and whose output is fed to a mouthpiece by way of an electromagnetically operated valve that is open and shut at a predetermined rate or as determined by the respiration rate of a patient using the apparatus. A source of oxygen may be provided for adding oxygen to the air supplied by the turbine. The apparatus incorporates a safety device for connecting the mouthpiece to the atmosphere in the event of pressure drop at the turbine output.
Inventors
- 👤 Roger Paul Charles Cavallo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:39
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/20; A61M16/201; A61M16/202; A61M16/021; A61M16/0057; A61M16/0066; A61M16/10; A61M16/12; A61M16/208; A61M16/209; A61M16/0003; A61M2016/0015; A61M2016/0018; A61M2016/0021
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
218 words
A respiration apparatus comprising: a multistage air-displacement turbine pump having a discharge side; an electric motor connected to said pump for driving same; a first pipe connected to said discharge side of said pump; a mouthpiece connected to said first pipe and receiving air from said pump through said first pipe; an adjustable first throttle valve along said first pipe between said discharge side of said pump and said mouthpiece for controlling the airflow to said mouthpiece; an electromagnetic flow-control valve along said first pipe between said discharge side and said throttle valve for selectively passing and blocking flow of air to said mouthpiece from said turbine pump; means for periodically opening and shutting said flow-control valve; a safety valve communicating with said first pipe for connecting said mouthpiece to the atmosphere upon pressure in said first pipe upstream of said flow-control valve falling below a predetermined level and indicating a failure at said pump; another pipe connected to a source of oxygen under pressure and communicating with the first-mentioned pipe between said flowcontrol valve and said discharge side of said turbine pump; and a further throttle valve in said other pipe between said source and said first pipe, said electromagnetic valve constituting the sole valve for flocking and unblocking flow of air and oxygen to a patient.
Claim 2
Dependent Claim
218 words
A respiration apparatus comprising: a multistage air-displacement turbine pump having a discharge side; an electric motor connected to said pump for driving same; a first pipe connected to said discharge side of said pump; a mouthpiece connected to said first pipe and receiving air from said pump through said first pipe; an adjustable first throttle valve along said first pipe between said discharge side of said pump and said mouthpiece for controlling the airflow to said mouthpiece; an electromagnetic flow-control valve along said first pipe between said discharge side and said throttle valve for selectively passing and blocking flow of air to said mouthpiece from said turbine pump; means for periodically opening and shutting said flow-control valve; a safety valve communicating with said first pipe for connecting said mouthpiece to the atmosphere upon pressure in said first pipe upstream of said flow-control valve falling below a predetermined level and indicating a failure at said pump; another pipe connected to a source of oxygen under pressure and communicating with the first-mentioned pipe between said flowcontrol valve and said discharge side of said turbine pump; and a further throttle valve in said other pipe between said source and said first pipe, said electromagnetic valve constituting the sole valve for flocking and unblocking flow of air and oxygen to a patient.
Claim 3
Dependent Claim
26 words
The apparatus defined in claim 1 wherein said other pipe is provided with an electromagnetic valve operatively connected with said motor and open upon operation thereof.
Claim 4
Dependent Claim
32 words
The apparatus defined in claim 1 wherein said first pipe has a plurality of telescopically engaged parts forming a heat exchanger between the air traversing said first pipe and the ambient atmosphere.
Claim 5
Dependent Claim
21 words
The apparatus defined in claim 1, further comprising a humidifier in said first pipe between said flow-control valve and said mouthpiece.
Claim 6
Dependent Claim
33 words
The apparatus defined in claim 1 wherein said mouthpiece is provided with valve means defining separate inhaled and exhaled gas flow paths, said exhaled flow paths comprising apparatus sealable by said valve means.
Claim 7
Dependent Claim
54 words
The apparatus defined in claim 1 wherein said safety valve comprises a closure member of elastomeric magnetized material, a housing enclosing said closure member and including a base portion of ferro magnetic material, means forming a flow path normally closed by the closure member, and a conduit connecting said housing to said first pipe.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |