Patent US4300526A successfully refreshed from Google Patents.
US4300526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Woodburning stove
Assignee: Individual
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Filing: 1980-01-29
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Granted: 1981-11-17
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Expires: 2000-01-29
Abstract
Abstract A woodburning stove having an inner housing and an outer housing spaced therefrom providing air passages therebetween. A blower circulates air through the air passages for absorbing heat from the walls of the housing and exhausting the heated air into the room where the stove is located. A substantially horizontal plate is spaced below the top wall of the inner housing defining an afterburner space. A duct extends between the passages extending between the two housings and the afterburner space. The duct is provided with a valve so that fresh air can be controllably applied to the afterburner space for causing combustion of gasses flowing through the afterburner space. A fresh air duct extends along the side of the stove and connects with the blower for supplying fresh air from the front of the stove to the blower.
Inventors
- 👤 John McKay
- 👤 Billy C. Hawkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:06
CPC Classifications
F; F24; F24B; F24B5/00; F24B5/02; F24B5/028; F24B7/00; F24B7/02; F24B7/025
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
178 words
A woodburning stove having an inner housing and an outer housing spaced therefrom providing air passages therebetween, a blower circulating air through said air passages for absorbing heat from the walls of said housings and exhausting the heated air into the room where said stove is located, a chimney opening provided in the top of said inner and outer housings adjacent a rear portion of said stove, a substantially horizontally extending plate spaced vertically below the top wall of said inner housing, a rear edge of said plate being joined to said top wall of said inner housing and a forward edge of said plate terminating short of the front of said stove producing an afterburner space for gases flowing from a fire built in said stove to said chimney opening, the improvement comprising: a duct providing communication between said air passage and said after burner space; and valve means for controlling the flow of preheated air from said passage through said duct to said afterburner space for causing combustion of said gases flowing through said afterburner space.
Claim 2
Dependent Claim
178 words
A woodburning stove having an inner housing and an outer housing spaced therefrom providing air passages therebetween, a blower circulating air through said air passages for absorbing heat from the walls of said housings and exhausting the heated air into the room where said stove is located, a chimney opening provided in the top of said inner and outer housings adjacent a rear portion of said stove, a substantially horizontally extending plate spaced vertically below the top wall of said inner housing, a rear edge of said plate being joined to said top wall of said inner housing and a forward edge of said plate terminating short of the front of said stove producing an afterburner space for gases flowing from a fire built in said stove to said chimney opening, the improvement comprising: a duct providing communication between said air passage and said after burner space; and valve means for controlling the flow of preheated air from said passage through said duct to said afterburner space for causing combustion of said gases flowing through said afterburner space.
Claim 3
Dependent Claim
40 words
The woodburning stove as set forth in claim 1 further comprising: a vane means extending between a side wall of said inner housing and said outer housing terminating in an arcuate end portion for directing preheated air to said duct.
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) | 1984-11-16 | 1985-05-18 | 1985-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-16 | 1989-05-18 | 1989-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-16 | 1993-05-18 | 1993-11-17 | $7700.00 | Window Closed / Lapsed |