US3814093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controlled, misted oxygen dispenser
Assignee: Individual
•
Filing: 1971-09-10
•
Granted: 1974-06-04
•
Expires: 1991-09-10
Abstract
Abstract The inflow rate of oxygen gas to a face mask is controlled by the speed of a motor driving a rotating metering device through which the oxygen is conducted. A valve regulated flow of liquid is introduced into the oxygen flow stream for baffled mixing therewith prior to entering the face mask. Exhalation outflow from the face mask is synchronized with the oxygen inflow by the metering device.
Inventors
- 👤 W Gregory
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:02
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/10; A61M16/14; A61M16/16; A61M16/021; A61M16/147; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86638
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
192 words
In combination with a source of gas under pressure, and a face mask to which inhale and exhale conduits are connected, means for controlling the supply of said gas to the inhale conduit and exhaust from the exhale conduit, comprising a tubular member to which the inhale conduit is connected, an elongated housing through which the tubular member extends, flow blocking means mounted within the tubular member for diverting flow through a mixing chamber enclosed by the housing about the tubular member, baffling means mounted on the tubular member within the housing through which said diverted flow is conducted, inlet means connected to the tubular member for conducting said gas to said mixing chamber, metering means interconnecting the source of gas with the inlet means, motor means drivingly connected to the metering means for controlling the rate of inflow of the gas to the inlet means, a reservoir of liquid, valve means connecting the reservoir to the inlet means for regulating flow of the liquid into the gas flowing through the inlet means, and means connecting the exhale conduit to the metering means for synchronizing exhaust flow with the inflow of gas.
Claim 2
Dependent Claim
192 words
In combination with a source of gas under pressure, and a face mask to which inhale and exhale conduits are connected, means for controlling the supply of said gas to the inhale conduit and exhaust from the exhale conduit, comprising a tubular member to which the inhale conduit is connected, an elongated housing through which the tubular member extends, flow blocking means mounted within the tubular member for diverting flow through a mixing chamber enclosed by the housing about the tubular member, baffling means mounted on the tubular member within the housing through which said diverted flow is conducted, inlet means connected to the tubular member for conducting said gas to said mixing chamber, metering means interconnecting the source of gas with the inlet means, motor means drivingly connected to the metering means for controlling the rate of inflow of the gas to the inlet means, a reservoir of liquid, valve means connecting the reservoir to the inlet means for regulating flow of the liquid into the gas flowing through the inlet means, and means connecting the exhale conduit to the metering means for synchronizing exhaust flow with the inflow of gas.
Claim 3
Dependent Claim
123 words
The combination of claim 1 wherein said metering means includes an annular casing, a pair of control discs rotationally fixed to the casing and having at least two pairs of radially spaced and axially aligned ports, a rotor axially spacing said discs having circumferentially spaced apertures intermittently aligned with said ports in the control discs, means connecting the rotor to the motor for continuous rotation of the rotor at a flow rate determining speed, means connecting the source of gas and the inlet means respectively to one pair of the aligned ports in the control discs, and means connecting one of the ports of the other pair of aligned ports to the exhale conduit for synchronizing exhaust flow with the inflow of gas.
Claim 4
Dependent Claim
28 words
The combination of claim 1 wherein said baffling means comprises a tubular screen element supported by the tubular member on opposite axial sides of the flow blocking means.
Claim 5
Dependent Claim
186 words
In combination with a source of gas under pressure, and a face mask to which inhale and exhale conduits are connected means for controlling the supply of said gas to the inhale conduit and exhaust from the exhale conduit, comprising mixing means connected to the inhale conduit through which the gas is conducted to the face mask and metering means connecting the source of gas to the mixing means including an electric motor, an annular casing, a pair of control discs rotationally fixed to the casing and having at least two pairs of radially spaced and axially aligned ports, a rotor axially spacing said discs having circumferentially spaced apertures intermittently aligned with said ports in the control discs, means connecting the rotor to the motor for continuous rotation of the rotor at a flow rate determining speed, means connecting the source of gas and the mixing means respectively to one pair of the aligned ports in the control discs, and means connecting one of the ports of the other pair of aligned ports to the exhale conduit for synchronizing exhaust flow with the inflow of gas.
Claim 6
Dependent Claim
186 words
In combination with a source of gas under pressure, and a face mask to which inhale and exhale conduits are connected means for controlling the supply of said gas to the inhale conduit and exhaust from the exhale conduit, comprising mixing means connected to the inhale conduit through which the gas is conducted to the face mask and metering means connecting the source of gas to the mixing means including an electric motor, an annular casing, a pair of control discs rotationally fixed to the casing and having at least two pairs of radially spaced and axially aligned ports, a rotor axially spacing said discs having circumferentially spaced apertures intermittently aligned with said ports in the control discs, means connecting the rotor to the motor for continuous rotation of the rotor at a flow rate determining speed, means connecting the source of gas and the mixing means respectively to one pair of the aligned ports in the control discs, and means connecting one of the ports of the other pair of aligned ports to the exhale conduit for synchronizing exhaust flow with the inflow of gas.
Claim 7
Dependent Claim
36 words
The combination of claim 4 including a reservoir of liquid and valve means connecting the reservoir between the mixing means and the metering means for proportioning the liquid and the gas mixed in the mixing means.
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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) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |