US4121562A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Energy conservation kit for household furnaces
Assignee: Individual
•
Filing: 1975-06-06
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Granted: 1978-10-24
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Expires: 1995-06-06
Abstract
Abstract A kit for converting presently used household or light commercial furnaces of the oil or gas type which inefficiently consume unnecessarily large quantities of fuel, to a more efficient mode of operation wherein smaller quantities of fuel are consumed. The kit comprises prefabricated components which can be easily attached to the furnace in such a way that fresh air is brought in from the outside to support the combustion process, and meet the needs of the draft diverter, rather than using already heated and/or humidified air as is done in presently existing systems.
Inventors
- 👤 Frank S. Grott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:52
CPC Classifications
F; F23; F23C; F23C7/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
86 words
A kit for converting fossil fuel type heating furnaces disposed within a structure and having a combustion chamber air inlet and a draft diverter air inlet to more efficient operation with respect to fuel consumption comprising: (a) a plenum adapted to be attached to said furnace for sealing off said air inlets from the ambient air surrounding said furnace and dimensioned so as to seal off both said inlets; and (b) means for communicating the interior of said sealing off means with air outside said structure.
Claim 2
Dependent Claim
86 words
A kit for converting fossil fuel type heating furnaces disposed within a structure and having a combustion chamber air inlet and a draft diverter air inlet to more efficient operation with respect to fuel consumption comprising: (a) a plenum adapted to be attached to said furnace for sealing off said air inlets from the ambient air surrounding said furnace and dimensioned so as to seal off both said inlets; and (b) means for communicating the interior of said sealing off means with air outside said structure.
Claim 3
Dependent Claim
19 words
The kit set forth in claim 1 wherein said means for communicating comprises at least one section of duct.
Claim 4
Dependent Claim
28 words
The kit set forth in claim 2 further including air intake means adapted to be attached to said means for communicating and to be disposed outside said structure.
Claim 5
Dependent Claim
25 words
The kit set forth in claim 1 wherein said means for sealing off comprises a prefabricated room-like structure for at least partially surrounding said furnace.
Claim 6
Dependent Claim
22 words
The kit set forth in claim 4 wherein said room-like structure includes door means to gain access to said furnace for servicing.
Claim 7
Dependent Claim
36 words
The kit set forth in claim 1 wherein said plenum is provided with at least one knockout section for permitting said means for communicating to be attached thereto in communication with the interior of said plenum.
Claim 8
Dependent Claim
137 words
A kit for converting fossil fuel type heating furnaces disposed within a structure and having a combustion chamber air inlet and a draft diverter air inlet, to more efficient operation with respect to fuel consumption, comprising: (a) integral structural means having one open side, dimensioned so as to fit over both said air inlets and seal said air inlets from the ambient air surrounding said furnace; (b) means for attaching said structural means to said furnace in said sealing relationship; (c) at least one section of duct adapted to be attached at one end to said structural means in communication with the interior thereof; and (d) air intake means for bringing in air from outside said structure to the end of said section of duct removed from the end adapted to be attached to said structural means.
Claim 9
Dependent Claim
137 words
A kit for converting fossil fuel type heating furnaces disposed within a structure and having a combustion chamber air inlet and a draft diverter air inlet, to more efficient operation with respect to fuel consumption, comprising: (a) integral structural means having one open side, dimensioned so as to fit over both said air inlets and seal said air inlets from the ambient air surrounding said furnace; (b) means for attaching said structural means to said furnace in said sealing relationship; (c) at least one section of duct adapted to be attached at one end to said structural means in communication with the interior thereof; and (d) air intake means for bringing in air from outside said structure to the end of said section of duct removed from the end adapted to be attached to said structural means.
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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) | 1981-10-23 | 1982-04-24 | 1982-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-23 | 1986-04-24 | 1986-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-23 | 1990-04-24 | 1990-10-24 | $7700.00 | Window Closed / Lapsed |