Patent US3309500A successfully refreshed from Google Patents.
US3309500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiant desk heater
Assignee: Aztec Electric Heat
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Filing: 1964-12-14
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Granted: 1967-03-14
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Expires: 1984-12-14
Abstract
No abstract record available.
Inventors
- 👤 Louis J Reynolds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:11
CPC Classifications
F; F24; F24C; F24C15/00; F24C15/30; F24C7/00; F24C7/04; F24C7/043
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
242 words
A RADIANT DESK HEATER COMPRISING A RELATIVELY FLAT PANEL OF A SIZE TO FIT ON THE INNER SURFACE OF THE FRONT WALL OF A DESK AND ADDING LITTLE ADDITIONAL BULK THERETO, SAID FLAT PANEL BEING COMPOSED OF FRONT AND REAR PLATES WITH ANGULARLY DISPOSED MARGINS WHICH OVERLAP WHEN THE PLATES ARE ASSEMBLED IN PARALLEL RELATION, SAID FRONT PLATE HAVING FRONT AND REAR INSULATING SURFACES, A SHEET TYPE HEATING ELEMENT COVERING SUBSTANTIALLY THE ENTIRE REAR SURFACE OF SAID FRONT PLATE, SAID SHEET TYPE HEATING ELEMENT HAVING WIDELY SPACED GENERALLY PARALLEL COPPER STRIPS INCORPORATED THEREIN WITH CONDUCTORS EXTENDING THEREFROM TO A CONNECTOR BY WHICH SAID HEATING ELEMENT CAN BE CONNECTED TO A SOURCE OF ELECTRICAL ENERGY, HEAT RESPONSIVE MEANS CONNECTED TO SAID CONDUCTORS FOR BREAKING THE CIRCUIT WHEN THE TEMPERATURE EXCEEDS A PREDETERMINED VALUE, STRIP MEANS HAVING ADHESIVE ON BOTH SIDES SECURING SAID HEATING ELEMENT TO THE INSULATING REAR SURFACE OF SAID FRONT PLATE, A RELATIVELY THICK LAYER OF THERMAL INSULATION MOUNTED BETWEEN SAID HEATING ELEMENT AND THE REAR PANEL PLATE WHEREBY THE TRANSMISSION OF HEAT TO THE REAR PANEL IS SUBSTANTIALLY RESTRICTED, MEANS FOR FASTENING THE FRONT AND REAR PLATES IN ASSEMBLED RELATION WITH SAID HEATING ELEMENT AND RELATIVELY THICK LAYER OF THERMAL INSULATION THEREBETWEEN, AND A STRIP FOR MOUNTING SAID PANEL ON A WALL SURFACE, SAID STRIP HAVING MEANS WHEREBY IT MAY BE ADHESIVELY ATTACHED TO A WALL SURFACE AND WITH MEANS BY WHICH SAID PANEL MAY BE ATTACHED TO SAID STRIP.
Claim 2
Dependent Claim
242 words
A RADIANT DESK HEATER COMPRISING A RELATIVELY FLAT PANEL OF A SIZE TO FIT ON THE INNER SURFACE OF THE FRONT WALL OF A DESK AND ADDING LITTLE ADDITIONAL BULK THERETO, SAID FLAT PANEL BEING COMPOSED OF FRONT AND REAR PLATES WITH ANGULARLY DISPOSED MARGINS WHICH OVERLAP WHEN THE PLATES ARE ASSEMBLED IN PARALLEL RELATION, SAID FRONT PLATE HAVING FRONT AND REAR INSULATING SURFACES, A SHEET TYPE HEATING ELEMENT COVERING SUBSTANTIALLY THE ENTIRE REAR SURFACE OF SAID FRONT PLATE, SAID SHEET TYPE HEATING ELEMENT HAVING WIDELY SPACED GENERALLY PARALLEL COPPER STRIPS INCORPORATED THEREIN WITH CONDUCTORS EXTENDING THEREFROM TO A CONNECTOR BY WHICH SAID HEATING ELEMENT CAN BE CONNECTED TO A SOURCE OF ELECTRICAL ENERGY, HEAT RESPONSIVE MEANS CONNECTED TO SAID CONDUCTORS FOR BREAKING THE CIRCUIT WHEN THE TEMPERATURE EXCEEDS A PREDETERMINED VALUE, STRIP MEANS HAVING ADHESIVE ON BOTH SIDES SECURING SAID HEATING ELEMENT TO THE INSULATING REAR SURFACE OF SAID FRONT PLATE, A RELATIVELY THICK LAYER OF THERMAL INSULATION MOUNTED BETWEEN SAID HEATING ELEMENT AND THE REAR PANEL PLATE WHEREBY THE TRANSMISSION OF HEAT TO THE REAR PANEL IS SUBSTANTIALLY RESTRICTED, MEANS FOR FASTENING THE FRONT AND REAR PLATES IN ASSEMBLED RELATION WITH SAID HEATING ELEMENT AND RELATIVELY THICK LAYER OF THERMAL INSULATION THEREBETWEEN, AND A STRIP FOR MOUNTING SAID PANEL ON A WALL SURFACE, SAID STRIP HAVING MEANS WHEREBY IT MAY BE ADHESIVELY ATTACHED TO A WALL SURFACE AND WITH MEANS BY WHICH SAID PANEL MAY BE ATTACHED TO SAID STRIP.
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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) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |