US4726351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas-fired appliances with "coal effect"
Assignee: Baxi Partnership Ltd
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Filing: 1987-08-13
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Granted: 1988-02-23
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Expires: 2007-08-13
Abstract
Abstract A gas fire with coal effect has a gas manifold or box divided into separate gas compartments with gas outlets therefrom and is formed with illumination apertures. The coal effect which is ceramic and has flame apertures therethrough is precisely positioned on the gas manifold or box by locating formation so that the gas outlets and flame apertures are correctly relatively disposed to avoid "sooting". An electric lamp (preferably two) is disposed forwardly and downwardly of, and preferably centrally of, the gas manifold or box and the coal effect to provide an instantaneous "glow" effect when illuminated. This latter effect can be attained with or without flames being present.
Inventors
- 👤 David Whittaker
- 👤 Ian Clegg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:16
CPC Classifications
F; F24; F24C; F24C3/00; F24C3/002; F24C3/006
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
229 words
A gas-fired appliance comprising: (1) a casing open to the front and defining a combustion chamber; (2) a gas burner of hollow plate-like configuration located within the combustion chamber to divide same into upper and lower compartments, and presenting an upper support surface extending rearwardly from the open front of the combustion chamber; (3) the gas burner being connectible to a gas supply, being formed with aperture means providing communication between the upper and lower compartments of the combustion chamber, and having gas outlets formed in the upper support surface around and adjacent to the aperture means; (4) simulated coal effect means supported within the upper compartment of the combustion chamber on the upper support surface of the gas burner; (5) the simulated coal effect means being formed with aperture means in register with the aperture means in the gas burner to provide communication between the lower compartment of the combustion chamber and a space in the upper compartment of the combustion chamber above the simulated coal effect means; (6) electric lamp means disposed in the casing downwardly and forwardly of the simulated coal effect means to provide illumination of the casing interior; and (7) reflector means disposed within the lower compartment of the casing under the gas burner to direct light from the electric lamp means through the registering aperture means into the upper compartment of the casing.
Claim 2
Dependent Claim
229 words
A gas-fired appliance comprising: (1) a casing open to the front and defining a combustion chamber; (2) a gas burner of hollow plate-like configuration located within the combustion chamber to divide same into upper and lower compartments, and presenting an upper support surface extending rearwardly from the open front of the combustion chamber; (3) the gas burner being connectible to a gas supply, being formed with aperture means providing communication between the upper and lower compartments of the combustion chamber, and having gas outlets formed in the upper support surface around and adjacent to the aperture means; (4) simulated coal effect means supported within the upper compartment of the combustion chamber on the upper support surface of the gas burner; (5) the simulated coal effect means being formed with aperture means in register with the aperture means in the gas burner to provide communication between the lower compartment of the combustion chamber and a space in the upper compartment of the combustion chamber above the simulated coal effect means; (6) electric lamp means disposed in the casing downwardly and forwardly of the simulated coal effect means to provide illumination of the casing interior; and (7) reflector means disposed within the lower compartment of the casing under the gas burner to direct light from the electric lamp means through the registering aperture means into the upper compartment of the casing.
Claim 3
Dependent Claim
102 words
An appliance as claimed in claim 1 in which said gas burner is a hollow plate-like structure which is relatively shallow in the vertical dimension and which has at one end gas inlet means, said hollow plate-like structure having apertures at a pllurality of locations through which said illumination of the electric lamp means through the intermediary of the reflector means can be viewed from above, and said hollow plate-like structure being sealed around its periphery and around the periphery of each aperture, and said gas outlet means being formed in the upper surface of said hollow plate-like structure around each structure.
Claim 4
Dependent Claim
54 words
An appliance as defined in claim 2 in which said gas outlet means is defined by relatively large holes from which flames are emitted when the gas is ignited and relatively small holes at each side of each large hole through which gas is emitted to control the size or shape of the flames.
Claim 5
Dependent Claim
47 words
An appliance as claimed in claim 2 in which said gas burner is divided internally to provide a pair of gas compartments, there being a pair of side-by-side gas inlets, one for each gas compartment, and each gas compartment being formed with at least one illumination aperture.
Claim 6
Dependent Claim
31 words
An appliance as claimed in claim 4 in which said separate gas compartments are formed by flattening the upper and lower walls of the plate-like structure together at selected areas thereof.
Claim 7
Dependent Claim
60 words
An appliance as claimed in claim 1 in which said simulated coal effect means comprises a one-piece closed hollow ceramic body formed with said aperture means extending from top to bottom thereof and of such a size to provide passage for flames, and the ceramic body being coterminous in area with said gas burner hollow plate-like structure to conceal same.
Claim 8
Dependent Claim
31 words
An appliance as claimed in claim 6 in which the bottom of said coal effect ceramic body has on its underside cross-lighting channels which join adjacent gas outlets of adjacent apertures.
Claim 9
Dependent Claim
44 words
An appliance as claimed in claim 6 further comprising complementary engaging formations formed on the top of said gas burner hollow plate-like structure and the bottom of said coal effect ceramic body to assist correct relative location therebetween to avoid sooting in the appliance.
Claim 10
Dependent Claim
21 words
An appliance as claimed in claim 1 in which the electric lamp means is colored to give an instantaneous "glow" effect.
Claim 11
Dependent Claim
23 words
An appliance as claimed in claim 1 in which the electric lamp means is controlled separately of the gas supply to the appliance.
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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) | 1991-02-22 | 1991-08-24 | 1992-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-22 | 1995-08-24 | 1996-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-22 | 1999-08-24 | 2000-02-23 | $7700.00 | Window Closed / Lapsed |