US3738577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Burner structure
Assignee: Lincoln Brass Works Inc
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Filing: 1971-07-19
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Granted: 1973-06-12
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Expires: 1991-07-19
Abstract
Abstract Burner for domestic gas ranges has alternate small burner ports and larger key-hole shaped burner ports; has inverted cup shape with downwardly dished top wall for cooling purposes; the rim of the cup being anchored to a base plate by lanced and struck-in portions of a flange.
Inventors
- 👤 E Blanzy
- 👤 D Duperow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:34
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/46; F23D14/72; F23D14/78; F23D14/02; F23D14/04; F23D14/06; F23D14/065; F23D14/26
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
138 words
Burner structure comprising, means forming a chamber having a bottom, a side wall, and a top, said bottom having an inlet through which gas issues into said chamber, said side wall having burner ports through which gas issues from said chamber, said top having edge portions adjoining upper portions of said side wall, said adjoining portions defining a circumscribed area, said top having a region within said adjoining portions configured so that the area of said region exceeds said circumscribed area, said region being spaced from said bottom in the direction of flow of gas through said inlet and being aligned with said inlet so that gas entering said chamber impinges directly on said region, said top, adjacent said adjoining portions, being displaced downwardly of said adjoining portions away from impingement by flames issuing from said burner ports.
Claim 2
Dependent Claim
138 words
Burner structure comprising, means forming a chamber having a bottom, a side wall, and a top, said bottom having an inlet through which gas issues into said chamber, said side wall having burner ports through which gas issues from said chamber, said top having edge portions adjoining upper portions of said side wall, said adjoining portions defining a circumscribed area, said top having a region within said adjoining portions configured so that the area of said region exceeds said circumscribed area, said region being spaced from said bottom in the direction of flow of gas through said inlet and being aligned with said inlet so that gas entering said chamber impinges directly on said region, said top, adjacent said adjoining portions, being displaced downwardly of said adjoining portions away from impingement by flames issuing from said burner ports.
Claim 3
Dependent Claim
32 words
The structure defined in claim 1 wherein said region and downward displacement are defined by a dished configuration the central portion of which is closer to said bottom than said edge portions.
Claim 4
Dependent Claim
22 words
The structure defined in claim 2 wherein said central portion is substantially aligned in said direction with the center of said inlet.
Claim 5
Dependent Claim
16 words
The structure defined in claim 3 wherein said dished configuration comprises a substantially spherically shaped concavity.
Claim 6
Dependent Claim
38 words
In combination with the structure defined in claim 1 a mixing tube secured to said bottom at said inlet with the central axis of the downstream end of said tube passing through substantially the center of said region.
Claim 7
Dependent Claim
30 words
The structure defined in claim 5 wherein said tube projects into said chamber so that said downstream end is spaced a substantial distance away from said bottom toward said region.
Claim 8
Dependent Claim
79 words
The structure defined in claim 1 wherein said bottom has an upper face, a lower face, and a side edge, said side wall having a shoulder which seats on said upper face and having flange means engaged against said side edge, said flange means having a slit defining an upwardly disposed edge, said flange means being deformed so that said upwardly disposed edge is in engagement against said bottom face whereby to secure said side wall to said bottom.
Claim 9
Dependent Claim
54 words
The structure defined in claim 1 wherein said ports comprise a series of small ports and larger ports in alternate arrangement, said larger ports having keyhole shape with an upper portion having cross dimension greater than that of said small ports and a lower slot-liKe portion having a width less than said cross dimension.
Claim 10
Dependent Claim
53 words
The structure defined in claim 7 wherein said ports comprise a series of small ports and larger ports in alternate arrangement, said larger ports having keyhole shape with an upper portion having cross dimension greater than that of said small ports and a lower slot-like portion having width less than said cross dimension.
Claim 11
Dependent Claim
102 words
In a burner having a series of small burner ports and larger burner ports in alternate arrangement through which fuel gas issues for combustion, improved structure which comprises, said larger ports having key-hole shape with an upper circular portion and a lower slot-like portion which intersects said circular portion, said upper portion having a diameter greater than the cross dimension of said small ports, said lower portion having a width less than said diameter and a height at least as great as said diameter, said upper circular portion having oppositely disposed segments which project horizontally beyond opposite sides of said lower portion.
Claim 12
Dependent Claim
102 words
In a burner having a series of small burner ports and larger burner ports in alternate arrangement through which fuel gas issues for combustion, improved structure which comprises, said larger ports having key-hole shape with an upper circular portion and a lower slot-like portion which intersects said circular portion, said upper portion having a diameter greater than the cross dimension of said small ports, said lower portion having a width less than said diameter and a height at least as great as said diameter, said upper circular portion having oppositely disposed segments which project horizontally beyond opposite sides of said lower portion.
Claim 13
Dependent Claim
18 words
The structure defined in claim 10 wherein the height of said slot-like portion is greater than said diameter.
Claim 14
Dependent Claim
108 words
Burner structure which comprises a base plate having an upper face, a lower face, and a side edge, a closed-center cup inverted over said base plate and having a shoulder which seats on said upper face so that said plate and cup define a chamber, said chamber having an inlet for fuel gas and having burner ports, said cup having flange means adjacent said shoulder engaged against said side edge, said flange means having a slit defining an upwardly disposed edge, said flange means being deformed so that said upwardly disposed edge is in engagement against said bottom face whereby to secure said cup to said base plate.
Claim 15
Dependent Claim
108 words
Burner structure which comprises a base plate having an upper face, a lower face, and a side edge, a closed-center cup inverted over said base plate and having a shoulder which seats on said upper face so that said plate and cup define a chamber, said chamber having an inlet for fuel gas and having burner ports, said cup having flange means adjacent said shoulder engaged against said side edge, said flange means having a slit defining an upwardly disposed edge, said flange means being deformed so that said upwardly disposed edge is in engagement against said bottom face whereby to secure said cup to said base plate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-11 | 1976-12-11 | 1977-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-11 | 1980-12-11 | 1981-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-11 | 1984-12-11 | 1985-06-12 | $7700.00 | Window Closed / Lapsed |