US3785361A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas burner device for food grilling
Assignee: Primus Sievert AB
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Filing: 1972-10-04
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Granted: 1974-01-15
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Expires: 1992-10-04
Abstract
Abstract A gas burner device for food grilling and operating with LNG, said device comprising a burner body mounted on a vertical axis in a casing, which is cupshaped and open upwardly and which supports a grill grate, said device further comprising a flame holder device consisting of a flame holder wall extending from below the burner gas discharge openings and towards the casing periphery and an apertured flame holder screen located above said burner body but below the grill grate.
Inventors
- 👤 C Mejyr
- 👤 L Ledin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:10
CPC Classifications
A; A47; A47J; A47J37/00; A47J37/06; A47J37/07; A47J37/0704; A47J37/0713
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
173 words
A gas burner device, particularly a burner device operating with liquified natural gas (LNG), such as LPG, ''''bottle gas,'''' or the like, and adapted for grilling of food-stuffs, said device comprising a burner body preferably circular in shape and mounted centrally with its axis vertical in a surrounding casing, also preferably being circular and cup-shaped and open upwardly, said casing supporting a grill grate spaced above the burner body, characterised by a flame holder device consisting of (i) a flame holder wall extending from a location below the gas discharge openings of said burner body and inclined upwardly and outwardly towards the periphery of said casing and (ii) an apertured flame holder screen located above the burner body but below the grill grate, said screen Extending outwardly into engagement with the flame holder wall adjacent the periphery of the casing so as to form a flame chamber having decreasing vertical dimension from the burner body and towards the periphery of the casing for assuring a uniform and extended flame area required for grilling.
Claim 2
Dependent Claim
173 words
A gas burner device, particularly a burner device operating with liquified natural gas (LNG), such as LPG, ''''bottle gas,'''' or the like, and adapted for grilling of food-stuffs, said device comprising a burner body preferably circular in shape and mounted centrally with its axis vertical in a surrounding casing, also preferably being circular and cup-shaped and open upwardly, said casing supporting a grill grate spaced above the burner body, characterised by a flame holder device consisting of (i) a flame holder wall extending from a location below the gas discharge openings of said burner body and inclined upwardly and outwardly towards the periphery of said casing and (ii) an apertured flame holder screen located above the burner body but below the grill grate, said screen Extending outwardly into engagement with the flame holder wall adjacent the periphery of the casing so as to form a flame chamber having decreasing vertical dimension from the burner body and towards the periphery of the casing for assuring a uniform and extended flame area required for grilling.
Claim 3
Dependent Claim
29 words
A device according to claim 1, characterised in that the flame holder wall (12) is made as a frusto-conical sheet metal piece having an apex angle of about 120*.
Claim 4
Dependent Claim
20 words
A device according to claim 1, characterised in that the flame holder screen (14) is made of extended sheet metal.
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) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |