US3717147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resuscitator
Assignee: Individual
•
Filing: 1971-03-25
•
Granted: 1973-02-20
•
Expires: 1991-03-25
Abstract
Abstract A resuscitation apparatus for use with a face mask or the like and a supply of oxygen having a body portion with an air inlet open to atmosphere and an outlet opening for connection to the mask, a mixing chamber positioned within the body portion connected with the outlet opening of the body portion, at least one air delivery port connecting with the mixing chamber, at least one oxygen inlet port in the mixing chamber arranged and oriented adjacent to the air delivery port to procure induction of air into the chamber by venturi action responsive to the flow of oxygen through the oxygen inlet passage, conduit means connected with the oxygen inlet port and connected to a source of oxygen, and manually operated valve means in the oxygen inlet passage for controlling the flow of oxygen from the conduit means to the oxygen inlet port in the chamber. In this way, the mask is always directly open to atmosphere through the air inlet port regardless of oxygen delivery. Delivery of oxygen inducts additional air which is mixed and supplied to the mask under slight pressure. Excess pressure escapes to atmosphere through the air inlet port.
Inventors
- 👤 S Flynn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:25
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/10; A61M16/12; A61M16/122; A61M16/125; A61M16/127; A61M1/00; A61M1/80; A61M1/804
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
255 words
A resuscitation apparatus for use with a face mask or the like and a supply of compressed oxygen and comprising: a body portion; air inlet opening means in said body portion open to atmosphere; a mixing chamber located within said body portion having an outlet opening, adapted to be connected to a face mask or the like; air inlet passage means in said mixing chamber communicating between the interior thereof and atmosphere through said air inlet opening means in said body portion for inflow and outflow of atmospheric air; at least one oxygen inlet passage in said mixing chamber; said oxygen inlet passage including a nozzle arranged and oriented adjacent to said air inlet passage means to procure induction of air into said chamber by venturi action responsive to the flow of oxygen through said oxygen inlet passage; conduit means connected with said oxygen inlet passage through said body portion and connectible with a source of compressed oxygen; manually operable valve means in connection with said oxygen inlet passage and said nozzle for controlling the flow of oxygen from said conduit means to said nozzle; said mixing chamber having cylindrical side walls extending upwards from said outlet opening of said body portion and a top wall joining said side walls at one end; said oxygen inlet passage having a central axis and adapted to pass through said top wall; and said air inlet passage adapted to pass through said side walls being in a plane perpendicular to the central axis of said oxygen inlet passage.
Claim 2
Dependent Claim
255 words
A resuscitation apparatus for use with a face mask or the like and a supply of compressed oxygen and comprising: a body portion; air inlet opening means in said body portion open to atmosphere; a mixing chamber located within said body portion having an outlet opening, adapted to be connected to a face mask or the like; air inlet passage means in said mixing chamber communicating between the interior thereof and atmosphere through said air inlet opening means in said body portion for inflow and outflow of atmospheric air; at least one oxygen inlet passage in said mixing chamber; said oxygen inlet passage including a nozzle arranged and oriented adjacent to said air inlet passage means to procure induction of air into said chamber by venturi action responsive to the flow of oxygen through said oxygen inlet passage; conduit means connected with said oxygen inlet passage through said body portion and connectible with a source of compressed oxygen; manually operable valve means in connection with said oxygen inlet passage and said nozzle for controlling the flow of oxygen from said conduit means to said nozzle; said mixing chamber having cylindrical side walls extending upwards from said outlet opening of said body portion and a top wall joining said side walls at one end; said oxygen inlet passage having a central axis and adapted to pass through said top wall; and said air inlet passage adapted to pass through said side walls being in a plane perpendicular to the central axis of said oxygen inlet passage.
Claim 3
Dependent Claim
255 words
A resuscitation apparatus for use with a face mask or the like and a supply of compressed oxygen and comprising: a body portion; air inlet opening means in said body portion open to atmosphere; a mixing chamber located within said body portion having an outlet opening, adapted to be connected to a face mask or the like; air inlet passage means in said mixing chamber communicating between the interior thereof and atmosphere through said air inlet opening means in said body portion for inflow and outflow of atmospheric air; at least one oxygen inlet passage in said mixing chamber; said oxygen inlet passage including a nozzle arranged and oriented adjacent to said air inlet passage means to procure induction of air into said chamber by venturi action responsive to the flow of oxygen through said oxygen inlet passage; conduit means connected with said oxygen inlet passage through said body portion and connectible with a source of compressed oxygen; manually operable valve means in connection with said oxygen inlet passage and said nozzle for controlling the flow of oxygen from said conduit means to said nozzle; said mixing chamber having cylindrical side walls extending upwards from said outlet opening of said body portion and a top wall joining said side walls at one end; said oxygen inlet passage having a central axis and adapted to pass through said top wall; and said air inlet passage adapted to pass through said side walls being in a plane perpendicular to the central axis of said oxygen inlet passage.
Claim 4
Dependent Claim
255 words
A resuscitation apparatus for use with a face mask or the like and a supply of compressed oxygen and comprising: a body portion; air inlet opening means in said body portion open to atmosphere; a mixing chamber located within said body portion having an outlet opening, adapted to be connected to a face mask or the like; air inlet passage means in said mixing chamber communicating between the interior thereof and atmosphere through said air inlet opening means in said body portion for inflow and outflow of atmospheric air; at least one oxygen inlet passage in said mixing chamber; said oxygen inlet passage including a nozzle arranged and oriented adjacent to said air inlet passage means to procure induction of air into said chamber by venturi action responsive to the flow of oxygen through said oxygen inlet passage; conduit means connected with said oxygen inlet passage through said body portion and connectible with a source of compressed oxygen; manually operable valve means in connection with said oxygen inlet passage and said nozzle for controlling the flow of oxygen from said conduit means to said nozzle; said mixing chamber having cylindrical side walls extending upwards from said outlet opening of said body portion and a top wall joining said side walls at one end; said oxygen inlet passage having a central axis and adapted to pass through said top wall; and said air inlet passage adapted to pass through said side walls being in a plane perpendicular to the central axis of said oxygen inlet passage.
Claim 5
Dependent Claim
75 words
An apparatus as claimed in claim 1, wherein said chamber comprises frusto-conical side walls extending upwards and inwards from said outlet opening and a top wall joining said side walls at one end; said oxygen inlet passage having a central axis and adapted to pass through said top wall; and said air inlet passage adapted to pass through said side walls being in a plane perpendicular to the central axis of said oxygen inlet passage.
Claim 6
Dependent Claim
26 words
An apparatus as claimed in claim 1, including spring means associated with said valve means and adapted to hold said valve means in a closed positioN.
Claim 7
Dependent Claim
56 words
An apparatus claimed in claim 1, including a shaft means connected to said valve means having a free end extending out of the wall of said body portion; manually engageable means on the free end of said shaft means and adapted to be operable by the fingers of the operator for manually actuating said valve means.
Claim 8
Dependent Claim
41 words
An apparatus as claimed in claim 1, including a control handle associated with said valve means, said body portion and control handle being so dimensioned as to be grasped as a unit in the palm of the hand of an operator.
Claim 9
Dependent Claim
66 words
An apparatus as claimed in claim 1, including an oxygen container having a supply of compressed oxygen; a flowmeter associated with said container for measuring and reducing the pressure of the oxygen from said container; control means on said flowmeter for adjusting the pressure of the oxygen emerging from said container; and tubular means connected between the outlet end of said flowmeter and said conduit means.
Claim 10
Dependent Claim
40 words
An apparatus as claimed in claim 1, including means for coupling said conduit means to the supply of oxygen with an adjustable pressure control means associated therewith, whereby the pressure of the oxygen entering said oxygen inlet passage is predetermined.
Claim 11
Dependent Claim
56 words
Apparatus as claimed in claim 1 including tubular opening means extending transversely of said body portion, said conduit means being located in one end of said tubular opening means, said valve means being connected therewith as aforesaid, and including valve operating means extending from the other end of said tubular opening means for manual operation thereof.
Claim 12
Dependent Claim
61 words
Apparatus as claimed in claim 1 including additional air passageway means formed in said body parallel to the central axis thereof and communicating at one end with said air inlet passage means, and at the other end thereof to atmosphere at one end of said body whereby to avoid blockage of said air passage means by the hand of an operator.
References Cited (Backward Citations)
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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) | 1976-02-20 | 1976-08-21 | 1977-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-20 | 1980-08-21 | 1981-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-20 | 1984-08-21 | 1985-02-20 | $7700.00 | Window Closed / Lapsed |