US3586970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot gas temperature sensor
Assignee: Individual
•
Filing: 1968-12-27
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Granted: 1971-06-22
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Expires: 1988-12-27
Abstract
Abstract The invention provides an improved heat sensor which is capable, for example, of measuring extremely high temperatures of gaseous mixtures used in gas turbines, and the like. The system of the invention incorporates a microwave radiometer operating in conjunction with an ''''antenna,'''' the antenna being in the form of a probe inserted into a cavity resonator through which the hot gaseous mixture passes.
Inventors
- 👤 William H Conway
- 👤 Philip J Caruso Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:32
CPC Classifications
G; G01; G01K; G01K11/00; G01K11/006
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
172 words
A system for measuring the temperature of a gas mixture, or the like, including: a cavity resonator exhibiting resonance characteristics at selected frequencies in the microwave portion of the electromagnetic spectrum; means for introducing a gas mixture into said cavity resonator, said gas mixture having absorption lines at particular frequencies in the microwave portion of the electromagnetic spectrum, at least one of said absorption lines corresponding to the aforesaid resonance characteristics of said cavity resonator and said gas mixture emitting microwave radiations at such frequency, the power level of said radiations being a function of the temperature of said gas mixture; a probe extending into said cavity resonator for producing microwave signals in response to said electromagnetic radiations from said gas in said cavity resonator; a microwave radiometer electrically coupled to said probe and responsive to the microwave signals at such frequency received from said probe for producing an output representative of the temperature of said gas mixture and an intermediate absorber member formed of microwave absorbing material positioned in said container.
Claim 2
Independent Claim
172 words
A system for measuring the temperature of a gas mixture, or the like, including: a cavity resonator exhibiting resonance characteristics at selected frequencies in the microwave portion of the electromagnetic spectrum; means for introducing a gas mixture into said cavity resonator, said gas mixture having absorption lines at particular frequencies in the microwave portion of the electromagnetic spectrum, at least one of said absorption lines corresponding to the aforesaid resonance characteristics of said cavity resonator and said gas mixture emitting microwave radiations at such frequency, the power level of said radiations being a function of the temperature of said gas mixture; a probe extending into said cavity resonator for producing microwave signals in response to said electromagnetic radiations from said gas in said cavity resonator; a microwave radiometer electrically coupled to said probe and responsive to the microwave signals at such frequency received from said probe for producing an output representative of the temperature of said gas mixture and an intermediate absorber member formed of microwave absorbing material positioned in said container.
Claim 3
Dependent Claim
62 words
The system defined in claim 1 and which includes an electrical conductor extending into said container and electrically coupled to said absorber member for producing microwave signals; and in which said microwave radiometer is electrically coupled to said conductor and is responsive to the microwave signals from said conductor for producing an output representative of the power level of said microwave signals.
Claim 4
Dependent Claim
63 words
The system defined in claim 1, and which includes a microwave probe radiatively coupled to said absorber member for producing microwave signals in response to electromagnetic radiations therefrom; and in which said microwave radiometer is electrically coupled to said probe and is responsive to the microwave signals from said probe for producing an output representative of the power level of said microwave signals.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |