Patent US3733842A successfully refreshed from Google Patents.
US3733842A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire place air conditioning apparatus
Assignee: Individual
•
Filing: 1971-07-21
•
Granted: 1973-05-22
•
Expires: 1991-07-21
Abstract
Abstract Air conditioning apparatus cooperates with and is at least partially installed in a fire place and its chimney to enable the fire place to be used for cooling as well as heating.
Inventors
- 👤 H Numsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:02
CPC Classifications
F; F24; F24F; F24F5/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
In combination with a fireplace and a chimney extending upward therefrom and communicating therewith; AN AIR DISTRIBUTION PANEL REMOVABLY DISPOSED IN SAID FIREPLACE; AN EVAPORATIVE COOLER; BRACKETS SECURED TO SAID CHIMNEY AND TO SAID COOLER; CONTROLS IN SAID PANEL OPERATIVELY CONNECTED TO SAID COOLER; AND A REMOVABLE CURVED LENGTH OF TUBING CONNECTED BETWEEN SAID COOLER AND THE TOP OF SAID CHIMNEY, WHEREBY SAID COOLER FORCES COOL AIR THROUGH SAID TUBING DOWN THROUGH SAID CHIMNEY FOR DISCHARGE VIA THE FIREPLACE.
Claim 2
Dependent Claim
79 words
In combination with a fireplace and a chimney extending upward therefrom and communicating therewith; AN AIR DISTRIBUTION PANEL REMOVABLY DISPOSED IN SAID FIREPLACE; AN EVAPORATIVE COOLER; BRACKETS SECURED TO SAID CHIMNEY AND TO SAID COOLER; CONTROLS IN SAID PANEL OPERATIVELY CONNECTED TO SAID COOLER; AND A REMOVABLE CURVED LENGTH OF TUBING CONNECTED BETWEEN SAID COOLER AND THE TOP OF SAID CHIMNEY, WHEREBY SAID COOLER FORCES COOL AIR THROUGH SAID TUBING DOWN THROUGH SAID CHIMNEY FOR DISCHARGE VIA THE FIREPLACE.
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) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |