US3812685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air conditioning process
Assignee: Individual
•
Filing: 1973-05-11
•
Granted: 1974-05-28
•
Expires: 1993-05-11
Abstract
Abstract A process for efficiently conditioning air for beneficial use by sequentially cooling dry air in three distinct steps, e.g., precooling the air out of the presence of moisture, adiabatically cooling the air in the presence of moisture, and refrigerating the air to finally cool the air and coincidentally condense excess moisture.
Inventors
- 👤 T Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:45
CPC Classifications
F; F24; F24F; F24F5/00; F24F5/0007; F24F5/0035; Y; Y02; Y02B; Y02B30/00; Y02B30/54
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
116 words
A process for controlling the temperature and moisture content of air having a dew point of not more than 57* corresponding to at least 90* F dry bulb temperature, sequentially preparing an air flow path accommodating 400-600 CFM/ton net sensible cooling; drawing fresh dry air exclusively from a fresh air source and through the flow path in the amounts of 400 to 600 CFM/ton net sensible cooling; pre-cooling the fresh air with a heat exchanger without altering its moisture content; scrubbing the air with recirculating water to adiabatically cool the air; and refrigerating the adiabatically cooled air to further cool the air to within a range of 53* to 60* F and coincidentally condensing excess moisture.
Claim 2
Dependent Claim
116 words
A process for controlling the temperature and moisture content of air having a dew point of not more than 57* corresponding to at least 90* F dry bulb temperature, sequentially preparing an air flow path accommodating 400-600 CFM/ton net sensible cooling; drawing fresh dry air exclusively from a fresh air source and through the flow path in the amounts of 400 to 600 CFM/ton net sensible cooling; pre-cooling the fresh air with a heat exchanger without altering its moisture content; scrubbing the air with recirculating water to adiabatically cool the air; and refrigerating the adiabatically cooled air to further cool the air to within a range of 53* to 60* F and coincidentally condensing excess moisture.
Claim 3
Dependent Claim
95 words
A process for conditioning air sequentially comprising (a) first cooling 100 percent fresh air having a dew point of not more than 57* corresponding to at least 90* F dry bulb temperature without altering its moisture content; (b) second cooling the air adiabatically by scrubbing the dry air with recirculating water; (c) third cooling the air by refrigeration to within the range of 53* to 60* F with coincidental condensation of excess moisture, all three cooling steps being applied sequentially to air quantities exclusively within the range of 400 to 600 CFM/ton net sensible cooling.
Claim 4
Dependent Claim
95 words
A process for conditioning air sequentially comprising (a) first cooling 100 percent fresh air having a dew point of not more than 57* corresponding to at least 90* F dry bulb temperature without altering its moisture content; (b) second cooling the air adiabatically by scrubbing the dry air with recirculating water; (c) third cooling the air by refrigeration to within the range of 53* to 60* F with coincidental condensation of excess moisture, all three cooling steps being applied sequentially to air quantities exclusively within the range of 400 to 600 CFM/ton net sensible cooling.
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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) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |