US3605873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating and cooling system
Assignee: Carrier Corp
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Filing: 1970-03-30
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Granted: 1971-09-20
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Expires: 1990-03-30
Abstract
Abstract An absorption refrigeration system is provided with an excess quantity of octyl alcohol heat exchange additive. A separation tank is provided which stores the alcohol when the system is operating in the cooling mode. In the heating mode, the alcohol is discharged from the separation tank, heated in the generator, and passed through an air-conditioning coil to provide heating to a desired location. Means are provided for mixing absorbent solution and refrigerant to form a dilute mixture which will not freeze when stored in the system during heating mode operation.
Inventors
- 👤 Louis H Leonard Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:36
CPC Classifications
F; F25; F25B; F25B29/00; F25B29/006; F25B15/00; F25B15/02; F25B15/06; Y; Y02; Y02A; Y02A30/00; Y02A30/27; Y02B; Y02B30/00; Y02B30/62
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |