US4437451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stove with catalytic combustor and bypass
Assignee: ATLANTA STOVE WORKS Inc 112 KROG ST NE ATLANTA 30307 A CORP OF
•
Filing: 1981-08-17
•
Granted: 1984-03-20
•
Expires: 2001-08-17
Abstract
Abstract A wood burning stove with a catalytic combustor and combustor bypass structure to increase fuel-burning efficiency and safety by reducing creosote emission by the stove and to provide for safe stove operation even if the catalytic combustor becomes blocked, clogged or otherwise obstructed. The single and multiple bypass structures disclosed utilize bypasses located adjacent to the catalytic combustor or combustors to provide for efficient operation with relatively little smoke flow through the bypass during normal operation and with at least partial combustion of smoke which does bypass the combustor. A smoke relief door automatically actuated by opening the fuel loading door to prevent smoke spillage into the room is also disclosed together with alternative means for supplying secondary air to the stove's combustion chamber in the vicinity of the catalytic combustor.
Inventors
- 👤 Charles F. Wysong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:38
CPC Classifications
F; F23; F23G; F23G7/00; F23G7/06; F23G7/07; F24; F24B; F24B1/00; F24B1/006; F24B13/00; F24B13/004; F24B5/00; F24B5/02; F24B5/021; F24B5/025
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
146 words
A stove comprising: (a) a firebox forming a combustion chamber; (b) a second chamber having an opening for connection to a flue and communicating with the combustion chamber; (c) a catalytic combustor mounted in a sleeve communicating between the combustion chamber and the second chamber; (d) a bypass communicating between regions in the combustion chamber and the second chamber immediately below and above the catalytic combustor; (e) a means for supplying primary air to the combustion chamber; and (f) a means for supplying secondary air to the combustion chamber near the catalytic combustor, comprising a first tube and a second tube, the first tube communicating between the exterior of the firebox and the combustion chamber within the second tube, the second tube being substantially vertical and open to the combustion chamber at the top and bottom ends thereof, the top end being near the catalytic combustor.
Claim 2
Dependent Claim
146 words
A stove comprising: (a) a firebox forming a combustion chamber; (b) a second chamber having an opening for connection to a flue and communicating with the combustion chamber; (c) a catalytic combustor mounted in a sleeve communicating between the combustion chamber and the second chamber; (d) a bypass communicating between regions in the combustion chamber and the second chamber immediately below and above the catalytic combustor; (e) a means for supplying primary air to the combustion chamber; and (f) a means for supplying secondary air to the combustion chamber near the catalytic combustor, comprising a first tube and a second tube, the first tube communicating between the exterior of the firebox and the combustion chamber within the second tube, the second tube being substantially vertical and open to the combustion chamber at the top and bottom ends thereof, the top end being near the catalytic combustor.
Claim 3
Dependent Claim
98 words
A stove comprising: (a) a firebox forming a combustion chamber; (b) a second chamber having an opening for connection to a flue and communicating with the combustion chamber; (c) a catalytic combustor mounted in a sleeve communicating between the combustion chamber and the second chamber; (d) a bypass communicating between regions in the combustion chamber and the second chamber immediately below and above the catalytic combustor; and (e) a turret mounted on the stove having an opening covered by a sight glass disposed above and in registration with the catalytic combustor and spaced apart from the second chamber.
Claim 4
Dependent Claim
98 words
A stove comprising: (a) a firebox forming a combustion chamber; (b) a second chamber having an opening for connection to a flue and communicating with the combustion chamber; (c) a catalytic combustor mounted in a sleeve communicating between the combustion chamber and the second chamber; (d) a bypass communicating between regions in the combustion chamber and the second chamber immediately below and above the catalytic combustor; and (e) a turret mounted on the stove having an opening covered by a sight glass disposed above and in registration with the catalytic combustor and spaced apart from the second chamber.
Claim 5
Dependent Claim
236 words
A stove comprising: (a) a firebox forming a combustion chamber and having first and second openings to the exterior of the firebox; (b) a second chamber having an opening for connection to a flue and communicating with the combustion chamber through: (i) a smoke relief opening located proximate to the first opening; (ii) a sleeve; and (iii) a bypass communicating with regions at each end of the sleeve; (c) A monolithic ceramic substrate catalytic combustor mounted in a sleeve; (d) a loading door on the firebox moveable between open and closed positions relative to the first opening in the firebox and having openings to provide a primary supply of air to the combustion chamber; (e) a smoke relief door coupled to the loading door for closing the smoke relief opening when the loading door is closed; (f) a means for supplying secondary air to the combustion chamber near the catalytic combustor, comprising a first tube and a second tube, the first tube communicating between the exterior of the firebox and the combustion chamber within the second tube, the second tube being substantially vertical and open to the combustion chamber at the top and bottom ends thereof, the top end being near the catalytic combustor; and (g) a turret mounted on the stove having an opening covered by a sight glass disposed above and in registration with the catalytic combustor and spaced apart from the second chamber.
Claim 6
Dependent Claim
236 words
A stove comprising: (a) a firebox forming a combustion chamber and having first and second openings to the exterior of the firebox; (b) a second chamber having an opening for connection to a flue and communicating with the combustion chamber through: (i) a smoke relief opening located proximate to the first opening; (ii) a sleeve; and (iii) a bypass communicating with regions at each end of the sleeve; (c) A monolithic ceramic substrate catalytic combustor mounted in a sleeve; (d) a loading door on the firebox moveable between open and closed positions relative to the first opening in the firebox and having openings to provide a primary supply of air to the combustion chamber; (e) a smoke relief door coupled to the loading door for closing the smoke relief opening when the loading door is closed; (f) a means for supplying secondary air to the combustion chamber near the catalytic combustor, comprising a first tube and a second tube, the first tube communicating between the exterior of the firebox and the combustion chamber within the second tube, the second tube being substantially vertical and open to the combustion chamber at the top and bottom ends thereof, the top end being near the catalytic combustor; and (g) a turret mounted on the stove having an opening covered by a sight glass disposed above and in registration with the catalytic combustor and spaced apart from the second chamber.
References Cited (Backward Citations)
US2352057A
Cited
US2443910A
Cited
US2658742A
Cited
US2862095A
Cited
US3043245A
Cited
US2845882A
Cited
US3056467A
Cited
US3428434A
Cited
US3470354A
Cited
US3880594A
Cited
US4113439A
Cited
US4054418A
Cited
US4213947A
Cited
US4280476A
Cited
US4330503A
Cited
US4345528A
Cited
US4345528B1
Cited
US4330503B1
Cited
US4373507A
Cited
US4319556A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-03-20 | 1987-09-19 | 1988-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-20 | 1991-09-19 | 1992-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-20 | 1995-09-19 | 1996-03-20 | $7700.00 | Window Closed / Lapsed |