US3997789A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Neutron-irradiation dose monitor comprising thermocouples
Assignee: Belgian Nuclear Research Centre
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Filing: 1974-04-26
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Granted: 1976-12-14
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Expires: 1994-04-26
Abstract
Abstract A neutron-irradiation dose monitor is described as comprising a first couple of wires of different nature, soldered to one another by the one end thereof and a second couple of wires of different nature, soldered to one another by the one end thereof, the wires of both couples having thermo-electric properties that vary differently according to the integrated neutron flow.
Inventors
- 👤 Francois Gaspard Mathieu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:28
CPC Classifications
G; G01; G01T; G01T3/00; G01T3/006
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
181 words
A neutron irradiation dose monitor comprising a first thermocouple comprising two dissimilar wires, each of these wires having two terminals, the two wires being jointed at one of their respective terminals in order to form a soldered junction, the two remaining terminals being free, the wires of said first thermocouple creating an electromotive force if the temperature of the soldered junction differs from the temperature of the two remaining terminals, said electromotive force being substantially independent of previous neutron irradiations of said first thermocouple, and a second thermocouple not connected to said first thermocouple comprising two different dissimilar wires, each of these wires having two terminals, the two wires being joined at one of their respective terminals in order to form a soldered junction, the two remaining terminals being free, the wires of said second thermocouple creating an electromotive force if the temperature of the soldered junction of this second thermocouple differs from the temperature of the two remaining terminals of said second thermocouple, the electromotive force created by the second thermocouple depending on previous neutron irradiations of said second thermocouple.
Claim 2
Dependent Claim
181 words
A neutron irradiation dose monitor comprising a first thermocouple comprising two dissimilar wires, each of these wires having two terminals, the two wires being jointed at one of their respective terminals in order to form a soldered junction, the two remaining terminals being free, the wires of said first thermocouple creating an electromotive force if the temperature of the soldered junction differs from the temperature of the two remaining terminals, said electromotive force being substantially independent of previous neutron irradiations of said first thermocouple, and a second thermocouple not connected to said first thermocouple comprising two different dissimilar wires, each of these wires having two terminals, the two wires being joined at one of their respective terminals in order to form a soldered junction, the two remaining terminals being free, the wires of said second thermocouple creating an electromotive force if the temperature of the soldered junction of this second thermocouple differs from the temperature of the two remaining terminals of said second thermocouple, the electromotive force created by the second thermocouple depending on previous neutron irradiations of said second thermocouple.
Claim 3
Dependent Claim
31 words
The neutron-irradiation dose monitor of claim 1 wherein said first thermocouple comprises a wire of an alloy of chromium and nickel and a wire of an alloy of aluminum and nickel.
Claim 4
Dependent Claim
24 words
The neutron-irradiation dose monitor of claim 1 wherein said second thermocouple comprises a wire of platinum and a wire of an alloy of rhodium-platinum.
Claim 5
Dependent Claim
48 words
The neutron-irradiation dose monitor of claim 1 including a refractory insulating material surrounding the soldered junctions of both couples and a portion of the length of the wires of the thermocouples, a protecting sheath surrounding the refractory insulating material, and a heating coil arranged outside the protecting sheath.
References Cited (Backward Citations)
US3028494A
Cited
US3564246A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-12-14 | 1980-06-14 | 1980-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-14 | 1984-06-14 | 1984-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-14 | 1988-06-14 | 1988-12-14 | $7700.00 | Window Closed / Lapsed |