US3290940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal measuring probe
Assignee: Rdf Corp
•
Filing: 1963-12-27
•
Granted: 1966-12-13
•
Expires: 1983-12-27
Abstract
No abstract record available.
Inventors
- 👤 Frank F Hines
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:53
CPC Classifications
G; G01; G01K; G01K1/00; G01K1/16; G01K1/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A TIP SENSITIVE TEMPERATURE PROBE COMPRISING: A COMPOSITE CORE HAVING A FIRST END PORTION, AN INTERMEDIATE PORTION AND A SECOND END PORTION, EACH OF SAID END PORTIONS HAVING A THERMAL DIFFUSIVITY AT LEAST TWO TIMES GREATER THAN THE THERMAL DIFFUSIVITY OF SAID INTERMEDIATE PORTION; A PRIMARY TEMPERATURE SENSITIVE MEANS SECURED TO SAID FIRST END PORTION AND A SECONDARY TEMPERATURE SENSITIVE MEANS SECURED TO SAID SECOND END PORTION, SAID PRIMARY AND SECONDARY TEMPERATURE SENSITIVE MEANS HAVING ELECTRICAL RESPONSE SENSITIVITIES TO TEMPERATURE THE RATIO OF WHICH IS SUBSTANTIALLY THE INVERSE OF THE RATIO OF THE TOTAL THERMAL TRANSFER COEFFICIENT OF SAID FIRST END PORTION TO THAT OF THE WHOLE CORE.
Claim 2
Dependent Claim
108 words
A TIP SENSITIVE TEMPERATURE PROBE COMPRISING: A COMPOSITE CORE HAVING A FIRST END PORTION, AN INTERMEDIATE PORTION AND A SECOND END PORTION, EACH OF SAID END PORTIONS HAVING A THERMAL DIFFUSIVITY AT LEAST TWO TIMES GREATER THAN THE THERMAL DIFFUSIVITY OF SAID INTERMEDIATE PORTION; A PRIMARY TEMPERATURE SENSITIVE MEANS SECURED TO SAID FIRST END PORTION AND A SECONDARY TEMPERATURE SENSITIVE MEANS SECURED TO SAID SECOND END PORTION, SAID PRIMARY AND SECONDARY TEMPERATURE SENSITIVE MEANS HAVING ELECTRICAL RESPONSE SENSITIVITIES TO TEMPERATURE THE RATIO OF WHICH IS SUBSTANTIALLY THE INVERSE OF THE RATIO OF THE TOTAL THERMAL TRANSFER COEFFICIENT OF SAID FIRST END PORTION TO THAT OF THE WHOLE CORE.
References Cited (Backward Citations)
US2798377A
Cited
US3233458A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |