US3698378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Smooth top gas range
Assignee: Gas Technology Institute
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Filing: 1968-07-12
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Granted: 1972-10-17
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Expires: 1988-07-12
Abstract
Abstract A smooth top gas range which includes a hood that draws cooking vapors and fumes and air into a regenerative type heat exchanger for preheating prior to combustion with gas at the burner surface unit. Each burner unit is enclosed in a separate combustion compartment with heat being transmitted to a cooking vessel through an air impervious compartment wall or plate by means of radiation. The combustion products exhaust from the combustion compartment, are cooled to a safe temperature by the heat exchanger and are finally vented to the room.
Inventors
- 👤 Robert B Rosenberg
- 👤 Esher R Kweller
- 👤 William R Staats
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:21
CPC Classifications
F; F24; F24C; F24C15/00; F24C15/20; F24C15/2042; F24C3/00; F24C3/04; F24C3/047; Y; Y10; Y10S; Y10S165/00; Y10S165/909
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
141 words
A top burner installation for removing vapors, fumes and odors generated above said top comprising, in combination: at least one burner; an air impervious cooking surface over said burner forming one wall of a burner combustion chamber; means for drawing said vapors and air from the region above said cooking surface and directing said vapors and air to said burner combustion chamber, said means including a hood over said cooking surface, and circulating means for directing said vapors and air to said burner combustion chamber; means for exhausting combustion products from said burner combustion chamber; and heat exchanger means positioned simultaneously within the path of said vapor and air and said combustion products to preheat said vapor and air prior to combustion in said burner combustion chamber and to cool said combustion products subsequent to discharge from said burner combustion chamber.
Claim 2
Dependent Claim
141 words
A top burner installation for removing vapors, fumes and odors generated above said top comprising, in combination: at least one burner; an air impervious cooking surface over said burner forming one wall of a burner combustion chamber; means for drawing said vapors and air from the region above said cooking surface and directing said vapors and air to said burner combustion chamber, said means including a hood over said cooking surface, and circulating means for directing said vapors and air to said burner combustion chamber; means for exhausting combustion products from said burner combustion chamber; and heat exchanger means positioned simultaneously within the path of said vapor and air and said combustion products to preheat said vapor and air prior to combustion in said burner combustion chamber and to cool said combustion products subsequent to discharge from said burner combustion chamber.
Claim 3
Dependent Claim
30 words
The installation of claim 1 wherein said burner is a gas burner and including combustible gas supply means to provide a source of a gas hydrocarbon fuel to said burner.
Claim 4
Dependent Claim
49 words
The installation of claim 1 wherein said heat exchanger means comprises a first chamber for receiving vapor and air a second chamber for receiving said combustion products adjacent said first chamber, and means interconnecting said chambers for removing heat from combustion products for heating said vapor and air mixture.
Claim 5
Dependent Claim
41 words
The installation of claim 3 wherein said means for removing heAt and heating said vapor and air comprise a regeneration wheel revolving about an axis between said first and second chambers to transfer heat from said second to said first chamber.
Claim 6
Dependent Claim
38 words
The installation of claim 1 wherein said burner chamber is divided by a gas burner into two separate regions separated by said burner such that all vapors and air pass through said burner as primary air for combustion.
Claim 7
Dependent Claim
50 words
The installation of claim 1 wherein said circulating means comprise ducts leading from said hood to said heat exchanger means, said ducts including circulating fans for driving said air, vapor and combustion products from above said surface to said heat exchanger and thence through said burner to said heat exchanger.
Claim 8
Dependent Claim
46 words
The installation of claim 1 including flow passage valve means between said heat exchanger and said burner combustion chamber adapted to open when said burner is turned to an on position thereby allowing vapor and air to be drawn into said burner combustion chamber for combustion.
Claim 9
Dependent Claim
26 words
The installation of claim 1 wherein said heat exchanger means also comprises said means for drawing vapors and air from the region above said cooking surface.
Claim 10
Dependent Claim
15 words
The installation of claim 1 wherein said heat exchanger means is positioned in said hood.
Claim 11
Dependent Claim
168 words
A top burner installation for removing vapors, fumes and odors generated above said top comprising, in combination: at least one burner; an air impervious cooking surface over said burner forming one wall of a burner combustion chamber; means for drawing said vapors and air from the region above said cooking surface and directing said vapors and air to said burner combustion chamber; means for exhausting combustion products from said burner combustion chamber; heat exchanger means positioned simultaneously within the path of said vapor and air and said combustion products to preheat said vapor and air prior to combustion in said burner combustion chamber and to cool said combustion products subsequent to discharge from said burner combustion chamber, said heat exchanger means including a first chamber for receiving vapor and air, a second chamber for receiving said combustion products adjacent said first chamber, and a regeneration wheel heat exchanger revolving about an axis between said first and second chambers to transfer heat from said second to said first chamber.
Claim 12
Dependent Claim
168 words
A top burner installation for removing vapors, fumes and odors generated above said top comprising, in combination: at least one burner; an air impervious cooking surface over said burner forming one wall of a burner combustion chamber; means for drawing said vapors and air from the region above said cooking surface and directing said vapors and air to said burner combustion chamber; means for exhausting combustion products from said burner combustion chamber; heat exchanger means positioned simultaneously within the path of said vapor and air and said combustion products to preheat said vapor and air prior to combustion in said burner combustion chamber and to cool said combustion products subsequent to discharge from said burner combustion chamber, said heat exchanger means including a first chamber for receiving vapor and air, a second chamber for receiving said combustion products adjacent said first chamber, and a regeneration wheel heat exchanger revolving about an axis between said first and second chambers to transfer heat from said second to said first chamber.
Claim 13
Dependent Claim
30 words
The installation of claim 10 wherein said burner is a gas burner and including combustible gas supply means to provide a source of a gas hydrocarbon fuel to said burner.
Claim 14
Dependent Claim
38 words
The installation of claim 10 wherein said burner chamber is divided by a gas burner into two separate regions separated by said burner such that all vapors and air pass through said burner as primary air for combustion.
Claim 15
Dependent Claim
46 words
The installation of claim 11 including flow passage valve means between said heat exchanger and said burner combustion chamber adapted to open when said burner is turned to an on position thereby allowing vapor and air to be drawn into said burner combustion chamber for combustion.
Claim 16
Dependent Claim
26 words
The installation of claim 10 wherein said heat exchanger means also comprises said means for drawing vapors and air from the region above said cooking surface.
Claim 17
Dependent Claim
38 words
The installation of claim 10 wherein said means for drawing and directing vapors comprises a hood over said cooking surface, and circulating means for directing said vapor and air through said heat exchanger to said burner combustion chamber.
Claim 18
Dependent Claim
50 words
The installation of claim 15 wherein said circulating means comprise ducts leading from said hood to said heat exchanger means, said ducts including circulating fans for driving said air, vapor and combustion products from above said surface to said heat exchanger and thence through said burner to said heat exchanger.
Claim 19
Dependent Claim
15 words
The installation of claim 15 wherein said heat exchanger means is positioned in said hood.
Claim 20
Dependent Claim
159 words
A top burner installation for removing vapors, fumes and odors generated above said top comprising, in combination: at least one burner; an air impervious cooking surface over said burner forming one wall of a burner combustion chamber; means for drawing said vapors and air from the region above said cooking surface and directing said vapors and air to said burner combustion chamber; means for exhausting said combustion products from said burner combustion chamber; heat exchanger means positioned simultaneously within the path of said vapor and air and said combustion products to preheat said vapor and air prior to combustion in said burner combustion chamber and to cool said combustion products subsequent to discharge from said burner combustion chamber; and flow passage valve means between said heat exchanger and said burner combustion chamber adapted to open when said burner is turned to an on position thereby allowing vapor and air to be drawn into said burner combustion chamber for combustion.
Claim 21
Dependent Claim
159 words
A top burner installation for removing vapors, fumes and odors generated above said top comprising, in combination: at least one burner; an air impervious cooking surface over said burner forming one wall of a burner combustion chamber; means for drawing said vapors and air from the region above said cooking surface and directing said vapors and air to said burner combustion chamber; means for exhausting said combustion products from said burner combustion chamber; heat exchanger means positioned simultaneously within the path of said vapor and air and said combustion products to preheat said vapor and air prior to combustion in said burner combustion chamber and to cool said combustion products subsequent to discharge from said burner combustion chamber; and flow passage valve means between said heat exchanger and said burner combustion chamber adapted to open when said burner is turned to an on position thereby allowing vapor and air to be drawn into said burner combustion chamber for combustion.
Claim 22
Dependent Claim
29 words
The installation of claim 18 wherein said burner is a gas burner and including combustible gas supply means to provide a source of gas hydrocarbon fuel to said burner.
Claim 23
Dependent Claim
38 words
The installation of claim 18 wherein said means for drawing and directing vapors comprises a hood over said cooking surface, and circulating means for directing said vapor and air through said heat exchanger to said burner combustion chamber.
Claim 24
Dependent Claim
49 words
The installation of claim 18 wherein said heat exchanger means comprises a first chamber for receiving vapor and air a second chamber for receiving said combustion products adjacent said first chamber, and means interconnecting said chambers for removing heat from combustion products for heating said vapor and air mixture.
Claim 25
Dependent Claim
41 words
The installation of claim 21 wherein said means for removing heat and heating said vapor and air comprise a regeneration wheel revolving about an axis between said first and second chambers to transfer heat from said second to said first chamber.
Claim 26
Dependent Claim
38 words
The installation of claim 18 wherein said burner chamber is divided by a gas burner into two separate regions separated by said burner such that all vapors and air pass through said burner as primary air for combustion.
Claim 27
Dependent Claim
50 words
The installation of claim 20 wherein said circulating means comprise ducts leading from said hood to said heat exchanger means, said ducts including circulating fans for driving said air, vapor and combustion products from above said surface to said heat exchanger and thence through said burner to said heat exchanger.
Claim 28
Dependent Claim
26 words
The installation of claim 18 wherein said heat exchanger means also comprises said means for drawing vapors and air from the region above said cooking surface.
Claim 29
Dependent Claim
15 words
The installation of claim 20 wherein said heat exchanger means is positioned in said hood.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |