US4280183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas analyzer
Assignee: S S O S SUB SEA OIL SERVICES SpA
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Filing: 1979-07-30
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Granted: 1981-07-21
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Expires: 1999-07-30
Abstract
Abstract A gas analyzer for instantaneously testing the percentages of the components of a binary gas mixture comprising carbon dioxide and oxygen, or a ternary one also containing saturated steam, which is intended more particularly for the supply of fuel to an engine for submarine operation, said analyzer including a temperature test apparatus to test the temperature T of the gas mixture, a sound velocity test apparatus, comprising an ultrasonic generator receiver and phase comparator to test the sound transmission velocity V in the gas mixture and a calculator to calculate the value of the ratio V 2 /T or a value proportional thereto.
Inventors
- 👤 Giunio G. Santi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:36
CPC Classifications
G; G01; G01N; G01N29/00; G01N29/22; G01N29/222; G01N29/02; G01N29/024; G01N29/32; G01N29/326; F; F02; F02B; F02B3/00; F02B3/06; F02B63/00; F02B63/06; G01N2291/00; G01N2291/01; G01N2291/012; G01N2291/02; G01N2291/021; G01N2291/0212; G01N2291/0215; G01N2291/0217
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
151 words
A gas analyzer, particularly useful in connection with the supply of fuel to an engine of a submarine, which engine has a fuel supply conduit through which flows an atmosphere comprising primarily oxygen gas and carbon dioxide gas, with or without satured steam, said analyzer immediately providing a signal indicative of the percent of that atmosphere made up by one of said gases, said analyzer comprising: temperature test means, including a sensor in said conduit, for providing a signal T indicative of the temperature of said atmosphere; sound velocity test means, having a portion thereof in said conduit, for providing a signal V indicative of the sound transmission velocity in said atmosphere; and means connected to said test means to receive said signals therefrom, to calculate the value of the ratio V 2 /T and to produce therefrom a signal indicative of the percentage of said one gas in said atmosphere.
Claim 2
Dependent Claim
151 words
A gas analyzer, particularly useful in connection with the supply of fuel to an engine of a submarine, which engine has a fuel supply conduit through which flows an atmosphere comprising primarily oxygen gas and carbon dioxide gas, with or without satured steam, said analyzer immediately providing a signal indicative of the percent of that atmosphere made up by one of said gases, said analyzer comprising: temperature test means, including a sensor in said conduit, for providing a signal T indicative of the temperature of said atmosphere; sound velocity test means, having a portion thereof in said conduit, for providing a signal V indicative of the sound transmission velocity in said atmosphere; and means connected to said test means to receive said signals therefrom, to calculate the value of the ratio V 2 /T and to produce therefrom a signal indicative of the percentage of said one gas in said atmosphere.
Claim 3
Dependent Claim
58 words
A gas analyzer according to claim 1, wherein said one gas is oxygen, and the last mentioned means includes a memory for storing a discrete series of percentage value of oxygen content and the ratio of V 2 /T for each, said last mentioned means comparing said calculated ratio with said stored ratios to produce said percentage signal.
Claim 4
Dependent Claim
18 words
A gas analyzer according to claim 1 in which the temperature test means is a digital temperature probe.
Claim 5
Dependent Claim
20 words
A gas analyzer according to claim 1 or 2 in which the sound velocity test means comprises an ultrasonic transmitter.
Claim 6
Dependent Claim
53 words
A gas analyzer according to claim 4 in which the ultrasonic transmitter comprises a generator to generate an alternating electric current of ultrasonic frequency and said portion comprises electro-acoustic transducer connected to said generator and an acoustico-electric transducer to produce said signal V, said transducers being a fixed distance apart in said conduit.
Claim 7
Dependent Claim
51 words
A gas analyzer according to claim 5 wherein said sound velocity test means includes a phase comparator connected to said generator and said acoustico-electric transducer to produce said V signal by comparing the phase of the signals of the generator with the phase of the signals received by the acoustico-electric transducer.
Claim 8
Dependent Claim
56 words
A gas analyzer according to claim 6 in which the means connected to the test means is a microprocessor, and including a calibrating device by which there is fed to the microprocessor an additional calibration input which permits a tuning of the gas analyzer as a function of the real constant interval between the two transducers.
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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) | 1984-07-20 | 1985-01-19 | 1985-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-20 | 1989-01-19 | 1989-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-20 | 1993-01-19 | 1993-07-21 | $7700.00 | Window Closed / Lapsed |