Patent US3120109A successfully refreshed from Google Patents.
US3120109A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressed air system of air conditioning
Assignee: W D IND Ltd
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Filing: 1961-08-11
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Granted: 1964-02-04
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Expires: 1981-08-11
Abstract
No abstract record available.
Inventors
- 👤 Robert S Well
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:07
CPC Classifications
F; F24; F24F; F24F11/00; F24F11/30; F24F3/00; F24F3/044; F24F3/0442; F24F3/12; F24F3/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
185 words
AN AIR CONDITIONING SYSTEM FOR A BUILDING HAVING A PLURALITY OF ROOM SPACES TO BE INDIVIDUALLY AIR-CONDITIONED COMPRISING A CENTRAL MOTOR-ACTUATED AXIAL FLOW COMPRESSOR FOR COMPRESSING FRESH MAKEUP AIR; DELIVERY PIPE MEANS FOR CONVEYING SAID COMPRESSED AIR TO EACH OF THE ROOM SPACES TO BE CONDITIONED; EXPANDING MEANS DISPOSED IN EACH SELECTED ROOM SPACE FOR ALTERNATIVELY (I) EXPANDING SAID COMPRESSED FRESH AIR WITH EXTRACTION OF HEAT AS MECHANICAL ENERGY TO PRODUCE A REDUCED TEMPERATURE IN SAID EXPANDED FRESH AIR AND (II) EXPANDING SAID COMPRESSED FRESH AIR WITHOUT EXTRACTION OF HEAT AS MECHANICAL ENERGY TO PRODUCE AN ELEVATED TEMPERATURE IN SAID EXPANDED FRESH AIR; VALVE CONTROL MEANS DISPOSED IN EACH ROOM SPACE OPERATIVELY ASSOCIATED WITH EACH OF SAID DELIVERY PIPE MEANS AND RESPONSIVE TO THE TEMPERATURE IN THE SELECTED ROOM SPACE TO BE CONDITIONED TO SELECTIVELY EXPAND SAID COMPRESSED FRESH AIR UNDER CONDITIONS (I) AND (II); MIXING AND DEHUMIDIFYING MEANS FOR BLENDING SAID EXPANDED AIR WITH AIR RECIRCULATED FROM SAID SELECTED ROOM SPACE; AND AIR CIRCULATING MEANS INCLUDING RECIRCULATING FAN MEANS AND INLET AND OUTLET DUCTS FOR CIRCULATING AIR TO AND FROM SAID SELECTED ROOM SPACE.
Claim 2
Dependent Claim
185 words
AN AIR CONDITIONING SYSTEM FOR A BUILDING HAVING A PLURALITY OF ROOM SPACES TO BE INDIVIDUALLY AIR-CONDITIONED COMPRISING A CENTRAL MOTOR-ACTUATED AXIAL FLOW COMPRESSOR FOR COMPRESSING FRESH MAKEUP AIR; DELIVERY PIPE MEANS FOR CONVEYING SAID COMPRESSED AIR TO EACH OF THE ROOM SPACES TO BE CONDITIONED; EXPANDING MEANS DISPOSED IN EACH SELECTED ROOM SPACE FOR ALTERNATIVELY (I) EXPANDING SAID COMPRESSED FRESH AIR WITH EXTRACTION OF HEAT AS MECHANICAL ENERGY TO PRODUCE A REDUCED TEMPERATURE IN SAID EXPANDED FRESH AIR AND (II) EXPANDING SAID COMPRESSED FRESH AIR WITHOUT EXTRACTION OF HEAT AS MECHANICAL ENERGY TO PRODUCE AN ELEVATED TEMPERATURE IN SAID EXPANDED FRESH AIR; VALVE CONTROL MEANS DISPOSED IN EACH ROOM SPACE OPERATIVELY ASSOCIATED WITH EACH OF SAID DELIVERY PIPE MEANS AND RESPONSIVE TO THE TEMPERATURE IN THE SELECTED ROOM SPACE TO BE CONDITIONED TO SELECTIVELY EXPAND SAID COMPRESSED FRESH AIR UNDER CONDITIONS (I) AND (II); MIXING AND DEHUMIDIFYING MEANS FOR BLENDING SAID EXPANDED AIR WITH AIR RECIRCULATED FROM SAID SELECTED ROOM SPACE; AND AIR CIRCULATING MEANS INCLUDING RECIRCULATING FAN MEANS AND INLET AND OUTLET DUCTS FOR CIRCULATING AIR TO AND FROM SAID SELECTED ROOM SPACE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-02-03 | 1967-08-05 | 1968-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-03 | 1971-08-05 | 1972-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-03 | 1975-08-05 | 1976-02-04 | $7700.00 | Window Closed / Lapsed |