Patent US4787187A successfully refreshed from Google Patents.
Patent US4879169A successfully refreshed from Google Patents.
Patent US2979576A successfully refreshed from Google Patents.
Patent US4083355A successfully refreshed from Google Patents.
US4083355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas range
Assignee: Schwank GmbH
•
Filing: 1975-08-25
•
Granted: 1978-04-11
•
Expires: 1995-08-25
Abstract
Abstract The range has one or more burners. Above these is arranged a glass-ceramic plate. Each burner has a perforate ceramic element that is spaced from the plate by a distance just sufficient to permit the combustion gas to travel through this space. A thermal securing arrangement detects the temperature of the plate, and an adjusting arrangement permits adjusting of the burners, and therefore of the plate, to a plurality of different temperature levels.
Inventors
- 👤 Bernd Schwank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:34
CPC Classifications
F; F24; F24C; F24C3/00; F24C3/04; F24C3/06; F24C3/067; F23; F23D; F23D14/00; F23D14/12; F23D14/14; F23D14/145; F24C3/08; F24C3/085; F24C3/10; F24C3/103; F24C3/12; F24C3/126
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
89 words
A gas range, comprising an upper glass-ceramic plate; at least one burner below said glass-ceramic plate and including a perforated ceramic element spaced from said plate by substantially 10-15 mm; thermal sensor means for sensing the temperature of said plate; gas supply means for said burner including control means for periodically activating and deactivating said gas supply means in dependence upon the temperature of said plate sensed by said thermal sensor means; and adjusting means for adjusting the temperature of said plate to a plurality of different temperature levels.
Claim 2
Dependent Claim
89 words
A gas range, comprising an upper glass-ceramic plate; at least one burner below said glass-ceramic plate and including a perforated ceramic element spaced from said plate by substantially 10-15 mm; thermal sensor means for sensing the temperature of said plate; gas supply means for said burner including control means for periodically activating and deactivating said gas supply means in dependence upon the temperature of said plate sensed by said thermal sensor means; and adjusting means for adjusting the temperature of said plate to a plurality of different temperature levels.
Claim 3
Dependent Claim
27 words
A gas range as defined in claim 1, wherein said burner is constructed for the gas to undergo substantially flameless combustion at a surface of said element.
Claim 4
Dependent Claim
16 words
A gas range as defined in claim 1; further comprising igniting means associated with said burner.
Claim 5
Dependent Claim
19 words
A gas range as defined in claim 1; and further comprising a piezo-electric ignition device associated with said burner.
Claim 6
Dependent Claim
24 words
A gas range as defined in claim 1; and further comprising ignition means associated with said burner and including an electrically energizable ignition device.
Claim 7
Dependent Claim
27 words
A gas range as defined in claim 1; and further comprising Peltier-type thermo-electric safety means for preventing the outflow of gas in uncombusted state from said burner.
Claim 8
Dependent Claim
15 words
A gas range as defined in claim 1, wherein said burner has two internal chambers.
Claim 9
Dependent Claim
17 words
A gas range as defined in claim 1, wherein said burner has a plurality of internal chambers.
Claim 10
Dependent Claim
16 words
A gas range as defined in claim 8, wherein said chambers are concentric with one another.
Claim 11
Dependent Claim
37 words
A gas range as defined in claim 8, wherein said burner further comprises a separate air-inlet Venturi tube for each of said chambers, for admission of the total quantity of combustion air required to operate said burner.
Claim 12
Dependent Claim
17 words
A gas range as defined in claim 8, wherein said element and chambers are of rectangular outline.
Claim 13
Dependent Claim
43 words
A gas range as defined in clam 1; further comprising a closed air-supply space below said burner and provided with at least one upright shaft for ambient air, said burner being adapted to draw combustion air from said space by a gas injector.
Claim 14
Dependent Claim
43 words
A gas range as defined in clam 1; further comprising a closed air-supply space below said burner and provided with at least one upright shaft for ambient air, said burner being adapted to draw combustion air from said space by a gas injector.
Claim 15
Dependent Claim
46 words
A gas range as defined in claim 1, wherein said adjusting means comprises selecting means for selecting three of said levels, namely a high level, an intermediate level and a low level, by permitting combustion of gas over different portions of the surface of said element.
Claim 16
Dependent Claim
37 words
A gas range as defined in claim 1, wherein said thermal sensor means comprises an electric sensor having a circuit which is interrupted when said sensor detects that the temperature of said plate exceeds a predetermined value.
Claim 17
Dependent Claim
38 words
A gas range as defined in claim 1, wherein said thermal sensor means comprises an electric sensor having a circuit which is interrupted when said sensor detects that the temperature of said combustion gas exceeds a predetermined value.
Claim 18
Dependent Claim
26 words
A gas range as defined in claim 1, said element having a marginal zone formed with a small discrete combustion chamber which constitutes a pilot burner.
Claim 19
Dependent Claim
33 words
A gas range as defined in claim 1, wherein said gas supply means for said burner, comprise a magnet valve said control means being arranged for periodically activating and deactivating said magnet valve.
Claim 20
Dependent Claim
33 words
A gas range as defined in claim 17, wherein said control means comprises a multi-stage regulator for varying the duration of the periods for which said magnet valve is activated and deactivated, respectively.
Claim 21
Dependent Claim
30 words
A gas range, as defined in claim 1, wherein said thermal sensor means for sensing the temperature of said plate comprise a contact thermostat in biased contact with said plate.
Claim 22
Dependent Claim
31 words
A gas range as defined in claim 19, said element having a surface from which heat is radiated; and wherein said contact thermostat is located at the center of said surface.
Claim 23
Dependent Claim
61 words
A gas range as defined in claim 19, said element having an inner circular portion and a surrounding outer annular portion having a first and a second section of said surface, respectively; and wherein said thermostat is centrally mounted on said inner portion and the surface section of said outer portion is slightly depressed relative to that of said inner portion.
Claim 24
Dependent Claim
33 words
A gas range as defined in claim 1, said burner having two internal chambers and two air-aspirating Venturi tubes, one for each chamber, said Venturi tubes forming a structural unit with one another.
Claim 25
Dependent Claim
52 words
A gas range as defined in claim 1, said burner having an inner and a surrounding outer burner chamber, thermal insulation surrounding the outer circumference of said outer chamber and having an upper edge abutting said plate, said thermal insulation being formed with an opening which communicates with a combustion-gas outlet channel.
Claim 26
Dependent Claim
15 words
A gas range as defined in claim 23, wherein said thermal insulation comprises ceramic fibers.
References Cited (Backward Citations)
US3028909A
Cited
US3033463A
Cited
US3241542A
Cited
US3562562A
Cited
US3606612A
Cited
US3773027A
Cited
US3843313A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-04-10 | 1981-10-10 | 1982-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-10 | 1985-10-10 | 1986-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-10 | 1989-10-10 | 1990-04-11 | $7700.00 | Window Closed / Lapsed |