US4134545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for recirculating heated air
Assignee: Individual
•
Filing: 1977-06-29
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Granted: 1979-01-16
•
Expires: 1997-06-29
Abstract
Abstract An apparatus for recirculating heated air within a building. A forced air heater with a blower is positioned in the building. A collecting tank is located near the ceiling. The collecting duct has perforations for collecting heated air that has risen to the ceiling. A return duct is connected between the collecting duct and the heater intake. The heater blower draws the heated air through the collecting duct and return duct and discharges it into the room.
Inventors
- 👤 Bobby J. Westbrook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:54
CPC Classifications
F; F24; F24F; F24F7/00; F24F7/04; F24F7/06; F24D; F24D5/00; F24D5/02; F24D5/04
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
118 words
In a room having a ceiling, an improved means for heating the room, comprising: a pair of furnaces mounted opposing each other and on opposite ends of the room, each of the furnaces having a blower for discharging heated air into the room; a collecting duct mounted adjacent the ceiling and extending substantially the length of the room, the collecting duct having a plurality of apertures for drawing air into the collecting duct; a return duct connected to each end of the collecting duct and extending downward to the blower intake of each furnace, causing air that has risen into the collecting duct to be drawn down the return ducts and into the furnace to be discharged again.
Claim 2
Dependent Claim
118 words
In a room having a ceiling, an improved means for heating the room, comprising: a pair of furnaces mounted opposing each other and on opposite ends of the room, each of the furnaces having a blower for discharging heated air into the room; a collecting duct mounted adjacent the ceiling and extending substantially the length of the room, the collecting duct having a plurality of apertures for drawing air into the collecting duct; a return duct connected to each end of the collecting duct and extending downward to the blower intake of each furnace, causing air that has risen into the collecting duct to be drawn down the return ducts and into the furnace to be discharged again.
Claim 3
Dependent Claim
25 words
The heating means according to claim 1 wherein the ceiling is double-pitched with a peak, and wherein the collecting duct is mounted in the peak.
References Cited (Backward Citations)
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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) | 1982-01-15 | 1982-07-17 | 1983-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-15 | 1986-07-17 | 1987-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-15 | 1990-07-17 | 1991-01-16 | $7700.00 | Window Closed / Lapsed |