US3843313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-cavity radiant burner
Assignee: Raytheon Co
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Filing: 1974-04-01
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Granted: 1974-10-22
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Expires: 1994-04-01
Abstract
Abstract A fluid-fueled radiant burner having multiple cavities each individually controlled so that selective high, medium and low heat may be achieved, making the burner suitable for use in a cooking range particularly of the flush top type.
Inventors
- 👤 P Helgeson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:35
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/12; F23D14/14; F23D14/145; F24; F24C; F24C3/00; F24C3/04; F24C3/047; F24C3/08; F24C3/085; F24C3/12; F24C3/126
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
118 words
A multi-level radiant burner and control system for fluidfueled ranges comprising a burner head including a chamber having an open side and separated into a plurality of cavities defined by upstanding walls, said cavities including a central cavity and at least one additional cavity encircling the central cavity, a combustion screen assembly mounted over said cavities, and means for attaching the screens to said walls, the bottom of said encircling cavity being inclined upwardly toward said screen, conduits in said head connected separately to the individual cavities therein, and control means for connecting said conduits to a source of fuel, said control means including distributing valve means operable to successively connect said conduits with a source of fuel.
Claim 2
Dependent Claim
118 words
A multi-level radiant burner and control system for fluidfueled ranges comprising a burner head including a chamber having an open side and separated into a plurality of cavities defined by upstanding walls, said cavities including a central cavity and at least one additional cavity encircling the central cavity, a combustion screen assembly mounted over said cavities, and means for attaching the screens to said walls, the bottom of said encircling cavity being inclined upwardly toward said screen, conduits in said head connected separately to the individual cavities therein, and control means for connecting said conduits to a source of fuel, said control means including distributing valve means operable to successively connect said conduits with a source of fuel.
Claim 3
Dependent Claim
46 words
A burner and system as set forth in claim 1 wherein said encircling cavity has an end wall located at the end of the conduit which is connected to said encircling cavity, said end wall has a port to provide communication between the conduit and cavity.
Claim 4
Dependent Claim
46 words
A burner and system as set forth in claim 2 wherein said conduits lie in a common transverse plane, and the inclined bottom of the encircling cavity at the end thereof opposite the port is disposed above the conduit which is connected to the central cavity.
Claim 5
Dependent Claim
76 words
A burner and system as set forth in claim 2 wherein there are provided two concentric encircling cavities with respective end walls and inclined bottoms, said inclined bottom of the inner of said encircling cavities being disposed above the conduit which is connected to the central cavity, and the inclined bottom Of the outer of said encircling cavities being disposed above both the conduits which are connected to the central cavity and the inner encircling cavity.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |