Patent US3280581A successfully refreshed from Google Patents.
US3280581A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Evaporator including radiant heater defrost means
Assignee: General Electric Co
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Filing: 1965-05-12
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Granted: 1966-10-25
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Expires: 1985-05-12
Abstract
No abstract record available.
Inventors
- 👤 Robert G Turner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:13
CPC Classifications
F; F25; F25D; F25D21/00; F25D21/06; F25D21/08; F25B; F25B1/00; F25B39/00; F25B39/02; F25D17/00; F25D17/04; F25D17/06; F25D17/062; F25D17/065; F25D2400/00; F25D2400/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
IN COMBINATION, A REFRIGERANT EVAPORATOR, A RADIANT DEFROST HEATER COMPRISING A TRANSPARENT, HEAT RESISTANT TUBE OPEN AT BOTH ENDS, END CAPS RESILIENTLY MOUNTED ON EACH END OF SAID TUBE, AND A RADIANT HEATER COIL IN SAID TUBE, EACH OF SAID CAPS COMPRISING A BODY OF INSULATING MATERIAL SUPPORTING SAID DEFROST HEATER IN HEATING ARRANGEMENT WITH SAID EVAPORATOR AND TO MAINTAIN SAID TUBE IN SPACED RELATION WITH SAID EVAPORATOR, EACH OF SAID CAPS INCLUDING A VERTICAL PASSAGE AND A HORIZONTAL PASSAGE CONNECTED TO SAID VERTICAL PASSAGE SAGE AND RESILIENTLY MOUNTED ON AN END OF SAID TUBE, THE LOWER END OF SAID VERTICAL PASSAGE AND SAID HORIZONTAL PASSAGE FORMING AN AIR PASSAGE CONNECTED TO THE INTERIOR OF SAID TUBE, A TERMINAL IN SAID HORIZONTAL PASSAGE INCLUDING ONE PORTION EXTENDING INTO SAID TUBE AND SECURED TO ONE END OF SAID HEATER COIL AND A SECOND PORTION POSITIONED IN SAID VERTICAL PASSAGE AND MEANS FOR CONNECTING A LEAD TO SAID SECOND PORTION OF SAID TERMINAL.
Claim 2
Dependent Claim
161 words
IN COMBINATION, A REFRIGERANT EVAPORATOR, A RADIANT DEFROST HEATER COMPRISING A TRANSPARENT, HEAT RESISTANT TUBE OPEN AT BOTH ENDS, END CAPS RESILIENTLY MOUNTED ON EACH END OF SAID TUBE, AND A RADIANT HEATER COIL IN SAID TUBE, EACH OF SAID CAPS COMPRISING A BODY OF INSULATING MATERIAL SUPPORTING SAID DEFROST HEATER IN HEATING ARRANGEMENT WITH SAID EVAPORATOR AND TO MAINTAIN SAID TUBE IN SPACED RELATION WITH SAID EVAPORATOR, EACH OF SAID CAPS INCLUDING A VERTICAL PASSAGE AND A HORIZONTAL PASSAGE CONNECTED TO SAID VERTICAL PASSAGE SAGE AND RESILIENTLY MOUNTED ON AN END OF SAID TUBE, THE LOWER END OF SAID VERTICAL PASSAGE AND SAID HORIZONTAL PASSAGE FORMING AN AIR PASSAGE CONNECTED TO THE INTERIOR OF SAID TUBE, A TERMINAL IN SAID HORIZONTAL PASSAGE INCLUDING ONE PORTION EXTENDING INTO SAID TUBE AND SECURED TO ONE END OF SAID HEATER COIL AND A SECOND PORTION POSITIONED IN SAID VERTICAL PASSAGE AND MEANS FOR CONNECTING A LEAD TO SAID SECOND PORTION OF SAID TERMINAL.
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) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |