Patent US3352352A successfully refreshed from Google Patents.
US3352352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air conditioning system
Assignee: Individual
•
Filing: 1966-07-21
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Granted: 1967-11-14
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Expires: 1986-07-21
Abstract
No abstract record available.
Inventors
- 👤 Charles E Walters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:25
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/06; F24F11/00; F24F11/30; F24F11/50; F24F11/70; F24F11/72; F24F11/74; F24F11/80; F24F11/83; F24F11/84; F24F11/86; F24F11/88; F24F2110/00; F24F2110/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
193 words
IN AN AIR CONDITIONING SYSTEM FOR AN ENCLOSED STRUCTURE, SAID SYSTEM INCLUDING MEANS FOR COOLING, MEANS FOR RE-CIRCULATING, MEANS FOR VENTILATING, AND MEANS FOR HEATING THE AIR WITHIN SAID STRUCTURE, CONTROL CIRCUITS FOR SAID MEANS INCLUDING, A FIRST THERMOSTAT SENSING AIR TEMPERATURE WITHIN SAID STRUCTURE, SAID THERMOSTAT HAVING A FIRST SETTING MEANS FOR CONTROLLING SAID HEATING CIRCUIT MEANS AND A SECOND SETTING MEANS FOR CONTROLLING SAID COOLING CIRCUIT MEANS ARRANGED FOR THE SETTING OF A TEMPERATURE SATISFACTION RANGE BETWEEN WHICH SAID FIRST THEREMOSTAT DOES NOT CALL FOR EITHER HEATING OR COOLING, A SECOND THERMOSTAT SENSING AIR TEMPERATURE WITHIN SAID STRUCTURE HAVING ITS SETTING WITHIN THE SAID SATISFACTION TEMPERATURE RANGE OF SAID FIRST THERMOSTAT, SAID SECOND THERMOSTAT BEING ARRANGED TO CONTROL SAID CIRCUITS TO OPERATE SAID VENTILATION MEANS IN RESPONSE TO A TEMPERATURE RISE ABOVE ITS SETTING, AND A THIRD THERMOSTAT SENSING OUTDOOR AIR TEMPERATURE COOPERATING WITH SAID SECOND THERMOSTAT IN ITS CONTROL CIRCUIT AND SET TO CLOSE ON TEMPERATURE DROP AT A TEMPERATURE LESS THAN THE SETTING OF SAID SECOND THERMOSTAT WHEREBY COOLING MAY BE EFFECTED BY THE CALL OF SAID SECOND THERMOSTAT WHERE OUTDOOR AIR TEMPERATURE IS LOWER THAN THE INDOOR TEMPERATURE.
Claim 2
Dependent Claim
193 words
IN AN AIR CONDITIONING SYSTEM FOR AN ENCLOSED STRUCTURE, SAID SYSTEM INCLUDING MEANS FOR COOLING, MEANS FOR RE-CIRCULATING, MEANS FOR VENTILATING, AND MEANS FOR HEATING THE AIR WITHIN SAID STRUCTURE, CONTROL CIRCUITS FOR SAID MEANS INCLUDING, A FIRST THERMOSTAT SENSING AIR TEMPERATURE WITHIN SAID STRUCTURE, SAID THERMOSTAT HAVING A FIRST SETTING MEANS FOR CONTROLLING SAID HEATING CIRCUIT MEANS AND A SECOND SETTING MEANS FOR CONTROLLING SAID COOLING CIRCUIT MEANS ARRANGED FOR THE SETTING OF A TEMPERATURE SATISFACTION RANGE BETWEEN WHICH SAID FIRST THEREMOSTAT DOES NOT CALL FOR EITHER HEATING OR COOLING, A SECOND THERMOSTAT SENSING AIR TEMPERATURE WITHIN SAID STRUCTURE HAVING ITS SETTING WITHIN THE SAID SATISFACTION TEMPERATURE RANGE OF SAID FIRST THERMOSTAT, SAID SECOND THERMOSTAT BEING ARRANGED TO CONTROL SAID CIRCUITS TO OPERATE SAID VENTILATION MEANS IN RESPONSE TO A TEMPERATURE RISE ABOVE ITS SETTING, AND A THIRD THERMOSTAT SENSING OUTDOOR AIR TEMPERATURE COOPERATING WITH SAID SECOND THERMOSTAT IN ITS CONTROL CIRCUIT AND SET TO CLOSE ON TEMPERATURE DROP AT A TEMPERATURE LESS THAN THE SETTING OF SAID SECOND THERMOSTAT WHEREBY COOLING MAY BE EFFECTED BY THE CALL OF SAID SECOND THERMOSTAT WHERE OUTDOOR AIR TEMPERATURE IS LOWER THAN THE INDOOR TEMPERATURE.
References Cited (Backward Citations)
US2209787A
Cited
US2372839A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |