Patent US5792665A successfully refreshed from Google Patents.
US5792665A
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US
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Oxygen sensing method and hand held analyzer therefore
Assignee: O2 Technologies Inc
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Filing: 1996-05-29
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Granted: 1998-08-11
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Expires: 2016-05-29
Abstract
Abstract An oxygen analyzer is provided to detect the oxygen concentration of both a control gas and the output of an oxygen concentrator using ultrasound technology. The analyzer uses a calibration mode to alter the analyzer's output when calibrating it on the control gas. The analyzer is then switched back to its normal mode to permit a therapist to check the percentage of oxygen in the gas being supplied by an oxygen concentrator.
Inventors
- 👤 Donald W. Morrow, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:09
CPC Classifications
G; G01; G01N; G01N29/00; G01N29/22; G01N29/30; A; A61; A61M; A61M16/00; A61M16/10; A61M16/1005; A61M16/101; G01N29/02; G01N29/032; G01N33/00; G01N33/0004; G01N33/0006; A61M2016/102; A61M2016/1025; G01N2291/00; G01N2291/02; G01N2291/021; G01N2291/0212; G01N2291/028; G01N2291/02809; G01N2291/02818; Y; Y10; Y10T; Y10T436/00; Y10T436/20; Y10T436/207497
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
130 words
A hand held oxygen analyzer comprising: a) a housing having a gas inlet; b) a means for sensing a concentration of oxygen in a gas containing argon using sound waves and producing a signal indicative of said concentration; said sensing means in communication with said gas inlet; c) a means for adjusting said signal to account for a lack of argon in an substantially pure oxygen gas when supplied to said inlet in a calibration mode; d) means for calibrating the analyzer when said substantially pure oxygen gas is supplied during the calibration mode to read 100% when it does not already read that level as a result of the adjusting means; and e) means for displaying an oxygen concentration based on one of said signal and said adjusted signal.
Claim 2
Dependent Claim
130 words
A hand held oxygen analyzer comprising: a) a housing having a gas inlet; b) a means for sensing a concentration of oxygen in a gas containing argon using sound waves and producing a signal indicative of said concentration; said sensing means in communication with said gas inlet; c) a means for adjusting said signal to account for a lack of argon in an substantially pure oxygen gas when supplied to said inlet in a calibration mode; d) means for calibrating the analyzer when said substantially pure oxygen gas is supplied during the calibration mode to read 100% when it does not already read that level as a result of the adjusting means; and e) means for displaying an oxygen concentration based on one of said signal and said adjusted signal.
Claim 3
Dependent Claim
26 words
The analyzer of claim 1, wherein said housing includes a switch to display the oxygen concentration based on one of the signal and the adjusted signal.
Claim 4
Dependent Claim
22 words
The analyzer of claim 1, further comprising a power source for supplying power to said sensing means, adjusting means and display means.
Claim 5
Dependent Claim
17 words
The analyzer of claim 3, further comprising means for providing 5 volt power from said power source.
Claim 6
Dependent Claim
12 words
The analyzer of claim 3, wherein said power source is a battery.
Claim 7
Independent Claim
106 words
A method of sensing oxygen output from an oxygen concentrator comprising the steps of: a) providing a hand held oxygen analyzer which senses oxygen concentration of a gas containing argon using sound waves; b) providing a supply of pure oxygen gas to said hand held oxygen analyzer; c) adjusting an output of said oxygen analyzer to account for a lack of argon in said supply of pure oxygen gas, displaying said adjusted output, and calibrating said analyzer; d) providing a supply of argon containing gas from said oxygen concentrator; and e) sensing the concentration of oxygen in said supply of gas and displaying said sensed concentration.
Claim 8
Independent Claim
106 words
A method of sensing oxygen output from an oxygen concentrator comprising the steps of: a) providing a hand held oxygen analyzer which senses oxygen concentration of a gas containing argon using sound waves; b) providing a supply of pure oxygen gas to said hand held oxygen analyzer; c) adjusting an output of said oxygen analyzer to account for a lack of argon in said supply of pure oxygen gas, displaying said adjusted output, and calibrating said analyzer; d) providing a supply of argon containing gas from said oxygen concentrator; and e) sensing the concentration of oxygen in said supply of gas and displaying said sensed concentration.
Claim 9
Dependent Claim
19 words
The method of claim 6, wherein the oxygen concentration in said supply of gas is at least 90% oxygen.
Claim 10
Dependent Claim
14 words
The method of claim 6, wherein the concentration of oxygen are displayed in percentages.
Claim 11
Dependent Claim
16 words
The method of claim 6, wherein said hand held oxygen analyzer is supplied with battery power.
Claim 12
Dependent Claim
25 words
The method of claim 6, wherein said supply of pure oxygen gas is provided by a container having said pure oxygen gas in pressurized form.
Claim 13
Dependent Claim
150 words
A hand held oxygen analyzer comprising: a) a housing having a display, gas inlet, an on-off switch, a calibration on-off switch and a pair of calibration adjustment switches; b) a means operable by actuation of the calibration on-off switch to the off position for sensing the concentration of oxygen in a gas containing argon using sound waves and producing a signal indicative of said concentration; said sensing means in communication with said gas inlet and means for displaying said signal as a percent oxygen on said display; c) means operable by actuation of the calibration on-off switch to the on position for adjusting the signal to account for a lack of argon in a gas supplied to said gas inlet and means for displaying said adjusted signal as a percent oxygen on said display; and d) a power source for said sensing means, said display means and said adjusting means.
Claim 14
Dependent Claim
150 words
A hand held oxygen analyzer comprising: a) a housing having a display, gas inlet, an on-off switch, a calibration on-off switch and a pair of calibration adjustment switches; b) a means operable by actuation of the calibration on-off switch to the off position for sensing the concentration of oxygen in a gas containing argon using sound waves and producing a signal indicative of said concentration; said sensing means in communication with said gas inlet and means for displaying said signal as a percent oxygen on said display; c) means operable by actuation of the calibration on-off switch to the on position for adjusting the signal to account for a lack of argon in a gas supplied to said gas inlet and means for displaying said adjusted signal as a percent oxygen on said display; and d) a power source for said sensing means, said display means and said adjusting means.
Claim 15
Dependent Claim
13 words
The analyzer of claim 11, wherein said display is a liquid crystal display.
Claim 16
Dependent Claim
12 words
The analyzer of claim 11, wherein said power source is a battery.
Claim 17
Dependent Claim
16 words
The analyzer of claim 13, wherein an output of said battery is controlled to 5 volts.
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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) | 2001-08-10 | 2002-02-09 | 2002-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-08-10 | 2006-02-09 | 2006-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-08-10 | 2010-02-09 | 2010-08-11 | $7700.00 | Window Closed / Lapsed |