US3596518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas temperature measurement
Assignee: Motors Liquidation Co
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Filing: 1968-06-17
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Granted: 1971-08-03
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Expires: 1988-06-17
Abstract
Abstract A device for measuring the temperature of very hot gas comprises a tube which has a double wall through which cooling water is circulated. Gas flows through the tube at a predetermined rate past two temperature measuring thermocouples in the duct. By reading the temperature at the two thermocouples, the temperature of the gas entering the tube may be determined.
Inventors
- 👤 John W Kirkpatrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:58
CPC Classifications
G; G01; G01K; G01K13/00; G01K13/02
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
102 words
A gas-temperature measuring device comprising, in combination, a tube defining an inlet for gas, an outlet for gas, and a passage connecting the inlet to the outlet, a first temperature-sensing device in the passage downstream from the inlet, a second temperature-sensing device in the passage downstream from the first temperature-sensing device, gas colling means including a first gas cooling area associated with the passage between the inlet and the first temperature-sensing device, and a second gas cooling area associated with the passage between the two temperature-sensing devices, said cooling means maintaining a constant ratio of gas-cooling effect between the two cooling areas.
Claim 2
Dependent Claim
102 words
A gas-temperature measuring device comprising, in combination, a tube defining an inlet for gas, an outlet for gas, and a passage connecting the inlet to the outlet, a first temperature-sensing device in the passage downstream from the inlet, a second temperature-sensing device in the passage downstream from the first temperature-sensing device, gas colling means including a first gas cooling area associated with the passage between the inlet and the first temperature-sensing device, and a second gas cooling area associated with the passage between the two temperature-sensing devices, said cooling means maintaining a constant ratio of gas-cooling effect between the two cooling areas.
Claim 3
Dependent Claim
28 words
A device as recited in claim 1 in which the two gas cooling areas are defined by a jacket on the tube for circulation of a cooling medium.
Claim 4
Dependent Claim
22 words
A device as recited in claim 1 including means for circulating a cooling medium from a common source through both cooling areas.
Claim 5
Dependent Claim
18 words
A device as recited in claim 1 including means controlling the rate of gas flow through the passage.
Claim 6
Dependent Claim
18 words
A device as recited in claim 4 in which the gas flow controlling means is a choked orifice.
Claim 7
Dependent Claim
20 words
A device as recited in claim 1 including further gas cooling areas between the second temperature-sensing device and the outlet.
Claim 8
Independent Claim
102 words
A device for measuring the temperature of a gas comprising, in combination, a tubular probe defining a gas inlet and a passage for gas, a nozzle operating above the critical pressure ratio for discharging the gas from the passage, a first temperature-sensing device in the passage downstream from the inlet and a second temperature-sensing device in the passage downstream from the first, and means for circulating a coolant at substantially constant temperature about the outer surface of the probe throughout a zone extending from a point upstream of the first temperature-sensing device at least to the location of the second temperature-sensing device.
Claim 9
Independent Claim
102 words
A device for measuring the temperature of a gas comprising, in combination, a tubular probe defining a gas inlet and a passage for gas, a nozzle operating above the critical pressure ratio for discharging the gas from the passage, a first temperature-sensing device in the passage downstream from the inlet and a second temperature-sensing device in the passage downstream from the first, and means for circulating a coolant at substantially constant temperature about the outer surface of the probe throughout a zone extending from a point upstream of the first temperature-sensing device at least to the location of the second temperature-sensing device.
Claim 10
Dependent Claim
50 words
A device as recited in claim 7 including first and second jackets surrounding the tube, means for guiding the coolant through the first jacket in the direction toward the gas inlet in contact with the tube, and mEans for returning the coolant through the space defined between the two jackets.
Claim 11
Dependent Claim
14 words
A device as recited in claim 7 in which the temperature-sensing devices are thermocouples.
Claim 12
Independent Claim
118 words
A device for measuring the temperature of a gas confined within a wall, comprising, in combination, a hollow tubular probe extending through the wall from a point without the wall to a point within the wall, the probe having a gas inlet within the wall and a gas outlet without the wall connected through the interior of the hollow probe, means determining an ascertainable rate of gas flow through the probe from the inlet to the outlet, heat exchange means in the probe effective to cool the gas progressively as it flows from the inlet to the outlet, and at least two temperature-sensing devices located at points mutually spaced along the path of gas flow through the probe.
Claim 13
Independent Claim
118 words
A device for measuring the temperature of a gas confined within a wall, comprising, in combination, a hollow tubular probe extending through the wall from a point without the wall to a point within the wall, the probe having a gas inlet within the wall and a gas outlet without the wall connected through the interior of the hollow probe, means determining an ascertainable rate of gas flow through the probe from the inlet to the outlet, heat exchange means in the probe effective to cool the gas progressively as it flows from the inlet to the outlet, and at least two temperature-sensing devices located at points mutually spaced along the path of gas flow through the probe.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |