Patent US997891A successfully refreshed from Google Patents.
US3874841A
Expired / Lapsed
US
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Gas burner
Assignee: Lincoln Brass Works Inc
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Filing: 1974-04-19
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Granted: 1975-04-01
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Expires: 1994-04-19
Abstract
Abstract A conical inverted funnel shaped baffle positioned above the central inlet of a gas burner (1) deflects incoming fuel gas toward flash-tube-charge-and ignition porting in a side wall of the burner and (2) delays fuel gas en route to the main burner ports by throttling a central portion of the gas flow and diverting peripheral portions of the gas flow around the lower edge portions of the baffle.
Inventors
- 👤 William J Ferlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:00
CPC Classifications
F; F24; F24C; F24C3/00; F24C3/10; F24C3/106
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
148 words
In a gas burner having a chamber defined by a bottom having a fuel gas inlet, a top and a side wall apertured to provide burner ports and flash-tube-charge-and ignition porting, improved structure which comprises, said inlet having a location which is substantially centered with respect to said bottom and top, means providing a baffle in said chamber between and substantially centered with respect to said bottom and top, said baffle having generally the shape of an inverted funnel with a lower edge, an upward opening and a wall therebetween, said lower edge having a diameter greater than that of said inlet and being located above said flash-tube-charge-and ignition porting, said upward opening having a diameter smaller than that of said inlet and being spaced below said chamber top, said funnel wall being contoured to effect deflection of fuel gas entering said chamber toward said flash-tube-charge-and ignition porting.
Claim 2
Dependent Claim
148 words
In a gas burner having a chamber defined by a bottom having a fuel gas inlet, a top and a side wall apertured to provide burner ports and flash-tube-charge-and ignition porting, improved structure which comprises, said inlet having a location which is substantially centered with respect to said bottom and top, means providing a baffle in said chamber between and substantially centered with respect to said bottom and top, said baffle having generally the shape of an inverted funnel with a lower edge, an upward opening and a wall therebetween, said lower edge having a diameter greater than that of said inlet and being located above said flash-tube-charge-and ignition porting, said upward opening having a diameter smaller than that of said inlet and being spaced below said chamber top, said funnel wall being contoured to effect deflection of fuel gas entering said chamber toward said flash-tube-charge-and ignition porting.
Claim 3
Dependent Claim
13 words
The structure defined in claim 1 wherein said funnel wall is substantially conical.
Claim 4
Dependent Claim
24 words
The structure defined in claim 2 wherein said baffle has a generally cylindrical tubular portion adjoining said funnel wall which defines said upward opening.
Claim 5
Dependent Claim
36 words
The structure defined in claim 1 wherein said baffle is supported within said chamber by leg means connected with said funnel wall and extending downwardly from said lower edge into supported relation with said chamber bottom.
Claim 6
Dependent Claim
26 words
The structure defined in claim 4 wherein said leg means comprises a plurality of legs substantially uniformly distributed with respect to the center of said baffle.
Claim 7
Dependent Claim
13 words
The structure defined in claim 5 wherein there are three of said legs.
Claim 8
Dependent Claim
25 words
The structure defined in claim 6 wherein said legs have lower end portions which are connected with a common ring engaged against said chamber bottom.
Claim 9
Dependent Claim
21 words
The structure defined in claim 7 wherein said baffle, legs and ring are formed integrally of a single piece of metal.
Claim 10
Dependent Claim
26 words
The structure defined in claim 4 wherein said funnel wall is substantially conical and said leg means extend substantially along the slant height of the cone.
Claim 11
Dependent Claim
76 words
The structure defined in claim 9 wherrein said leg means comprises three legs disposed substantially uniformly around the center of said cone, said legs having lower end portions which adjoin a common ring engaged against said chamber bottom, said baffle having a generally cylindrical tubular portion adjoining and extending upwardlY from said funnel wall which defines said upward opening, said tubular portion, funnel wall, legs and ring being formed integrally of a single piece of metal.
Claim 12
Dependent Claim
33 words
The structure defined in claim 6 wherein said legs have a combined extent measured peripherally of said lower edge which is no greater than one-fourth of the peripheral dimension of said lower edge.
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) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |