US3132492A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air conditioning apparatus
Assignee: Carrier Corp
•
Filing: 1957-10-11
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Granted: 1964-05-12
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Expires: 1977-10-11
Abstract
No abstract record available.
Inventors
- 👤 William L Mcgrath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:48
CPC Classifications
F; F25; F25B; F25B13/00; F25B2313/00; F25B2313/023; F25B2313/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
AIR CONDITIONING APPARATUS FOR SELECTIVELY PROVIDING HEATING, COOLING, OR DEHUMIDIFICATION COMPRISING A COMPRESSOR, A PLURALITY OF FIRST HEAT EXCHANGE COILS, A PLURALITY OF SECOND HEAT EXCHANGE COILS, A PLURALITY OF EXPANSION MEMBERS EACH COUPLING ONE OF SAID FIRST COILS TO ONE OF SAID SECOND COILS TO PROVIDE SEPARATE CONTINUOUS REFRIGERANT CIRCUITS, AND VALVE MEANS ASSOCIATED WITH EACH PAIR OF COILS COUPLING A FIRST COIL AND A SECOND COIL OF EACH CIRCUIT TO SAID COMPRESSOR TO PERMIT SAID FIRST COILS TO SELECTIVELY PRODUCE HEATING, COOLING, OR DEHUMIDIFICATION.
Claim 2
Dependent Claim
86 words
AIR CONDITIONING APPARATUS FOR SELECTIVELY PROVIDING HEATING, COOLING, OR DEHUMIDIFICATION COMPRISING A COMPRESSOR, A PLURALITY OF FIRST HEAT EXCHANGE COILS, A PLURALITY OF SECOND HEAT EXCHANGE COILS, A PLURALITY OF EXPANSION MEMBERS EACH COUPLING ONE OF SAID FIRST COILS TO ONE OF SAID SECOND COILS TO PROVIDE SEPARATE CONTINUOUS REFRIGERANT CIRCUITS, AND VALVE MEANS ASSOCIATED WITH EACH PAIR OF COILS COUPLING A FIRST COIL AND A SECOND COIL OF EACH CIRCUIT TO SAID COMPRESSOR TO PERMIT SAID FIRST COILS TO SELECTIVELY PRODUCE HEATING, COOLING, OR DEHUMIDIFICATION.
References Cited (Backward Citations)
US2376859A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-12 | 1967-11-11 | 1968-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-12 | 1971-11-11 | 1972-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-12 | 1975-11-11 | 1976-05-12 | $7700.00 | Window Closed / Lapsed |