US3294592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Immersion thermocouple assembly
Assignee: Leeds and Northrup Co
•
Filing: 1959-09-11
•
Granted: 1966-12-27
•
Expires: 1979-09-11
Abstract
No abstract record available.
Inventors
- 👤 Donald H Fish
- 👤 Joseph O Acciani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:56
CPC Classifications
G; G01; G01K; G01K13/00; G01K13/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
IN A HIGH-TEMPERATURE IMMERSION THERMOCOUPLE ASSEMBLY, A HEAD OF REFRACTORY MATERIAL HAVING AN APERTURE THROUGH IT, A QUARTZ TUBE HAVING A CLOSED AND AN OPEN END, THE TUBE HAVING ITS OPEN END PERMANENTLY SEALED INTO ONE END OF SAID APERTURE TO PROTRUDE OUTWARDLY FROM SAID HEAD, THE PROTRUDING END OF SAID QUARTZ TUBE BEING CLOSED, A PAIR OF THERMOCOUPLE WIRES EXTENDING THROUGH SAID APERTURE INTO SAID QUARTZ TUBE, THE THERMOCOUPLE WIRES HAVING A JUNCTION LOCATED IN THE POTRUDING QUARTZ TUBE PORTION, A REMOVABLE PLUG FITTED INTO THE OTHER END OF SAID APERTURE, SAID PLUG SUPPORTING THE FREE ENDS OF SAID THERMOCOUPLE WIRES FOR REMOVABLY MAINTAINING SAID THERMOCOUPLE WIRES IN THEIR POSITION WITH RESPECT TO THE QUARTZ TUBE SO THAT SAID THERMOCOUPLE WIRES AND SAID PLUG ARE REMOVABLE FROM SAID HEAD WITHOUT REMOVAL OF SAID QUARTZ TUBE, AND HEAT-RESISTANT MEANS FOR IMMERSING SAID HEAD INTO AND RETRACTING IT FROM MELTING METAL.
Claim 2
Dependent Claim
150 words
IN A HIGH-TEMPERATURE IMMERSION THERMOCOUPLE ASSEMBLY, A HEAD OF REFRACTORY MATERIAL HAVING AN APERTURE THROUGH IT, A QUARTZ TUBE HAVING A CLOSED AND AN OPEN END, THE TUBE HAVING ITS OPEN END PERMANENTLY SEALED INTO ONE END OF SAID APERTURE TO PROTRUDE OUTWARDLY FROM SAID HEAD, THE PROTRUDING END OF SAID QUARTZ TUBE BEING CLOSED, A PAIR OF THERMOCOUPLE WIRES EXTENDING THROUGH SAID APERTURE INTO SAID QUARTZ TUBE, THE THERMOCOUPLE WIRES HAVING A JUNCTION LOCATED IN THE POTRUDING QUARTZ TUBE PORTION, A REMOVABLE PLUG FITTED INTO THE OTHER END OF SAID APERTURE, SAID PLUG SUPPORTING THE FREE ENDS OF SAID THERMOCOUPLE WIRES FOR REMOVABLY MAINTAINING SAID THERMOCOUPLE WIRES IN THEIR POSITION WITH RESPECT TO THE QUARTZ TUBE SO THAT SAID THERMOCOUPLE WIRES AND SAID PLUG ARE REMOVABLE FROM SAID HEAD WITHOUT REMOVAL OF SAID QUARTZ TUBE, AND HEAT-RESISTANT MEANS FOR IMMERSING SAID HEAD INTO AND RETRACTING IT FROM MELTING METAL.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |