US3371504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger for air conditioner
Assignee: CLAUDE S BRINDLEY
•
Filing: 1965-10-23
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Granted: 1968-03-05
•
Expires: 1985-10-23
Abstract
No abstract record available.
Inventors
- 👤 Claude S Brindley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:03
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/001
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
IN AN AIR HEATING AND COOLING SYSTEM, IN COMBINATION WITH A FLUID CIRCULATION SYSTEM HAVING CONNECTION WITH A SERIES OF HEATING AND COOLING UNITS, A DUCT SYSTEM CLOSED TO OUTSIDE AIR AND HAVING A BLOWER FAN OPERATING THEREIN TO CIRCULATE AIR THERETHROUGH, AN EVAPORATION-CONDENSER COIL IN SAID DUCT SYSTEM IN THE PATH OF AIR CIRCULATED THERETHROUGH BY SAID FAN, A HEAT TRANSFER COIL IN SAID FLUID CIRCULATION SYSTEM ENCLOSED IN SAID DUCT SYSTEM IN THE PATH OF AIR CIRCULATED THERETHROUGH, A HAT PUMP ARRANGED EXTERNALLY OR SAID DUCT SYSTEM HAVING CONNECTION WITH SAID EVAPORATOR-CONDENSER COIL WHEREBY TO HEAT OR COOL THE AIR CIRCULATED THROUGH SAID HEAT TRANSFER COIL AND WHEREBY SAID CIRCULATED AIR IS DEHYDRATED.
Claim 2
Dependent Claim
115 words
IN AN AIR HEATING AND COOLING SYSTEM, IN COMBINATION WITH A FLUID CIRCULATION SYSTEM HAVING CONNECTION WITH A SERIES OF HEATING AND COOLING UNITS, A DUCT SYSTEM CLOSED TO OUTSIDE AIR AND HAVING A BLOWER FAN OPERATING THEREIN TO CIRCULATE AIR THERETHROUGH, AN EVAPORATION-CONDENSER COIL IN SAID DUCT SYSTEM IN THE PATH OF AIR CIRCULATED THERETHROUGH BY SAID FAN, A HEAT TRANSFER COIL IN SAID FLUID CIRCULATION SYSTEM ENCLOSED IN SAID DUCT SYSTEM IN THE PATH OF AIR CIRCULATED THERETHROUGH, A HAT PUMP ARRANGED EXTERNALLY OR SAID DUCT SYSTEM HAVING CONNECTION WITH SAID EVAPORATOR-CONDENSER COIL WHEREBY TO HEAT OR COOL THE AIR CIRCULATED THROUGH SAID HEAT TRANSFER COIL AND WHEREBY SAID CIRCULATED AIR IS DEHYDRATED.
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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) | 1971-03-05 | 1971-09-04 | 1972-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-05 | 1975-09-04 | 1976-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-05 | 1979-09-04 | 1980-03-05 | $7700.00 | Window Closed / Lapsed |