US3267995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centralized heating and air conditioning system
Assignee: Stewart Warner Corp
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Filing: 1963-07-15
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Granted: 1966-08-23
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Expires: 1983-07-15
Abstract
No abstract record available.
Inventors
- 👤 Wendell E Maudlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:22
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/044; F24F1/00; F24F1/02; F24F1/028; F24F1/0287; F24F1/03; F24F1/0317; F24F1/032; F24F1/0323; F24F1/0328; F24F1/035
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
209 words
A CENTRALIZED HEATING AND AIR CONDITIONING SYSTEM FOR A RESIDENTIAL DWELLING UNIT HAVING A MAIN DWELLING SPACE AND AN ATTIC SPACE SEPERATED FROM ONE ANOTHER BY A CEILING AND FURTHER HAVING THE MAIN DWELLING SPACE DIVIDED BY A PLURALITY OF INTERIOR PARTITIONS TO THE CEILING INTO SEPARATE INTERIOR ROOMS, COMPRISING THE COMBINATION OF THE CEILING HAVING SPACED FROM ALL OF SAID INTERIOR PARTITIONS GENERALLY CENTRALLY OF THE DWELLING UNIT AN OPENING BETWEEN THE MAIN DWELLING SPACE AND THE ATTIC SPACE, SUPPORT MEANS FORMED IN THE CEILING ADJACENT THE OPENING, A SELF-CONTAINED HEATING AND AIR CONDITIONING UNIT INCLUDING COAXIALLY ARRANGED SPACE CONDENSING AND EVAPORATING COILS AND A COMPRESSOR ENCIRCLED BY ONE OF SAID COILS AND ALL FIXEDLY CARRIED BY A COMMON PLATE SUPPORTED BY THE SUPPORT MEANS WITH ONE OF SAID COILS AND SAID COMPRESSOR BEING INSERTED THROUGH SAID OPENING INTO SAID ATTIC SPACE IRRESPECTIVE OF THE ANGULAR POSITION OF SAID ONE COIL AND COMPRESSOR RELATIVE TO THE OPENING, AND SAID PLATE ADJACENT THE LOWER SIDE OF SAID CEILING TO SUSPEND THE OTHER COIL AND CONDITIONED AIR OUTLET WITHIN THE MAIN DWELLING SPACE, MEANS TO OPERATE THE CONDITIONING UNIT ON A CYCLE FOR COOLING THE DWELLING SPACE AND ON A CYCLE FOR HEATING THE DWELLING SPACE, A CENTRALIZED DISTRIBUTOR EN-
Claim 2
Dependent Claim
209 words
A CENTRALIZED HEATING AND AIR CONDITIONING SYSTEM FOR A RESIDENTIAL DWELLING UNIT HAVING A MAIN DWELLING SPACE AND AN ATTIC SPACE SEPERATED FROM ONE ANOTHER BY A CEILING AND FURTHER HAVING THE MAIN DWELLING SPACE DIVIDED BY A PLURALITY OF INTERIOR PARTITIONS TO THE CEILING INTO SEPARATE INTERIOR ROOMS, COMPRISING THE COMBINATION OF THE CEILING HAVING SPACED FROM ALL OF SAID INTERIOR PARTITIONS GENERALLY CENTRALLY OF THE DWELLING UNIT AN OPENING BETWEEN THE MAIN DWELLING SPACE AND THE ATTIC SPACE, SUPPORT MEANS FORMED IN THE CEILING ADJACENT THE OPENING, A SELF-CONTAINED HEATING AND AIR CONDITIONING UNIT INCLUDING COAXIALLY ARRANGED SPACE CONDENSING AND EVAPORATING COILS AND A COMPRESSOR ENCIRCLED BY ONE OF SAID COILS AND ALL FIXEDLY CARRIED BY A COMMON PLATE SUPPORTED BY THE SUPPORT MEANS WITH ONE OF SAID COILS AND SAID COMPRESSOR BEING INSERTED THROUGH SAID OPENING INTO SAID ATTIC SPACE IRRESPECTIVE OF THE ANGULAR POSITION OF SAID ONE COIL AND COMPRESSOR RELATIVE TO THE OPENING, AND SAID PLATE ADJACENT THE LOWER SIDE OF SAID CEILING TO SUSPEND THE OTHER COIL AND CONDITIONED AIR OUTLET WITHIN THE MAIN DWELLING SPACE, MEANS TO OPERATE THE CONDITIONING UNIT ON A CYCLE FOR COOLING THE DWELLING SPACE AND ON A CYCLE FOR HEATING THE DWELLING SPACE, A CENTRALIZED DISTRIBUTOR EN-
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) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |