US3748904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor electromagnetic radiation isolated thermocouple
Assignee: United States Department of the Navy
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Filing: 1971-05-28
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Granted: 1973-07-31
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Expires: 1991-05-28
Abstract
Abstract To measure temperature in an electromagnetic field a thermocouple is connected to a meter. The temperature to be measured is sensed and converted into a D.C. voltage by the thermocouple. This D.C. voltage causes the meter to indicate the temperature. To prevent error due to electromagnetically coupled energy heating the thermocouple and/or producing a high frequency current which is conducted to the meter circuit from interfering with the meter readings, a physically small thermocouple with semiconductor leads or a semiconductor thermocouple having semiconductor leads is provided.
Inventors
- 👤 R Ford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:27
CPC Classifications
G; G01; G01K; G01K7/00; G01K7/02; G01K7/04; G01R; G01R29/00; G01R29/08; G01R29/0864; G01R29/0878
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
60 words
Apparatus for measuring heat in an RF field and reducing interference caused by said RF field comprising: a thermocouple made from semiconductor materials; means for indicating the output of said thermocouple; and semiconductor leads interconnecting said thermocouple and said indicating means; whereby said semiconductor materials forming the thermocouple and leads reduce the coupling and heating caused by said RF field.
Claim 2
Dependent Claim
60 words
Apparatus for measuring heat in an RF field and reducing interference caused by said RF field comprising: a thermocouple made from semiconductor materials; means for indicating the output of said thermocouple; and semiconductor leads interconnecting said thermocouple and said indicating means; whereby said semiconductor materials forming the thermocouple and leads reduce the coupling and heating caused by said RF field.
Claim 3
Independent Claim
65 words
The method of measuring heat in an RD field and reducing interference caused by said RF field comprising: placing a thermocouple made of semiconductor materials in a heat measuring position in the RF field; and connecting said thermocouple to an output indicating circuit with semiconductor leads; whereby said semi-conductor materials forming the thermocouple and leads reduce the coupling and heating caused by said RF field.
Claim 4
Independent Claim
65 words
The method of measuring heat in an RD field and reducing interference caused by said RF field comprising: placing a thermocouple made of semiconductor materials in a heat measuring position in the RF field; and connecting said thermocouple to an output indicating circuit with semiconductor leads; whereby said semi-conductor materials forming the thermocouple and leads reduce the coupling and heating caused by said RF field.
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) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |