Patent US314090A successfully refreshed from Google Patents.
Patent US3233458A successfully refreshed from Google Patents.
US3233458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat flux transducer
Assignee: North American Aviation Corp
•
Filing: 1961-08-08
•
Granted: 1966-02-08
•
Expires: 1981-08-08
Abstract
No abstract record available.
Inventors
- 👤 John J Vrolyk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:47
CPC Classifications
G; G01; G01N; G01N25/00; G01N25/20; G01N25/48; G01N25/4806; G01N25/4813; G01N25/482; G01K; G01K17/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
177 words
A HEAT FLUX TRANSDUCER COMPRISING A BODY HAVING A FORWARD END SURFACE TO BE HEATED AND A BACKWARD END SURFACE TO BE MAINTAINED AT A TEMPERATURE LESS THAN THAT TO WHICH SAID FORWARD END SURFACE IS HEATED, THE BODY BEING FORMED OF AT LEAST FIVE SECTIONS ARRANGED IN A SERIES EXTENDING BETWEEN SAID ENDS WITH EACH SECTION BEING JOINED DIRECTLY TO ITS NEXT ADJACENT SECTION, THE COMPOSITION OF MATTER OF EACH OF THE SECONDS FROM SAID ENDS RESPECTIVELY BEING DIFFERENT FROM THAT OF EACH OF THE OTHER OF SAID SECTIONS, EACH OF SAID OTHER SECTIONS BEING DISCS OF FROM 0.001 TO 0.5 INCH THICK, EACH OF SAID SECOND SECTIONS BEING RELATIVELY THIN LAYERS, EACH OF SAID SECOND SECTIONS FORMING RESPECTIVE THIN LAYERS, EACH OF SAID EACH OF THEIR NEXT ADJACENT SECTIONS, AND TWO LEAD WIRES CONNECTED DIRECTLY TO SAID SECOND SECTIONS RESPECTIVELY FOR CONNECTION TO MEASURING MEANS RESPONSIVE TO THE ELECTRICAL POTENTIAL BETWEEN THEM, EACH OF SAID WIRES BEING OF THE SAME COMPOSITION OF MATTER AS THAT OF THE SAID SECTION TO WHICH IT IS DIRECTLY CONNECTED.
Claim 2
Dependent Claim
177 words
A HEAT FLUX TRANSDUCER COMPRISING A BODY HAVING A FORWARD END SURFACE TO BE HEATED AND A BACKWARD END SURFACE TO BE MAINTAINED AT A TEMPERATURE LESS THAN THAT TO WHICH SAID FORWARD END SURFACE IS HEATED, THE BODY BEING FORMED OF AT LEAST FIVE SECTIONS ARRANGED IN A SERIES EXTENDING BETWEEN SAID ENDS WITH EACH SECTION BEING JOINED DIRECTLY TO ITS NEXT ADJACENT SECTION, THE COMPOSITION OF MATTER OF EACH OF THE SECONDS FROM SAID ENDS RESPECTIVELY BEING DIFFERENT FROM THAT OF EACH OF THE OTHER OF SAID SECTIONS, EACH OF SAID OTHER SECTIONS BEING DISCS OF FROM 0.001 TO 0.5 INCH THICK, EACH OF SAID SECOND SECTIONS BEING RELATIVELY THIN LAYERS, EACH OF SAID SECOND SECTIONS FORMING RESPECTIVE THIN LAYERS, EACH OF SAID EACH OF THEIR NEXT ADJACENT SECTIONS, AND TWO LEAD WIRES CONNECTED DIRECTLY TO SAID SECOND SECTIONS RESPECTIVELY FOR CONNECTION TO MEASURING MEANS RESPONSIVE TO THE ELECTRICAL POTENTIAL BETWEEN THEM, EACH OF SAID WIRES BEING OF THE SAME COMPOSITION OF MATTER AS THAT OF THE SAID SECTION TO WHICH IT IS DIRECTLY CONNECTED.
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) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |