Patent US4886445A successfully refreshed from Google Patents.
US4886445A
Expired / Lapsed
US
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Gas burning artificial log assembly
Assignee: Vermont Castings Inc
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Filing: 1987-11-02
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Granted: 1989-12-12
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Expires: 2007-11-02
Abstract
Abstract A gas burning artificial log assembly includes an artificial log set, a gas burner and andirons for support of the artificial logs. Each of the artificial logs has a front face and a different rear face and can be reversed so as to change the appearance of the artificial log set. The faces of the logs can simulate different wood types or can have a partially-burned appearance. The artificial logs are shaped to define a combustion chamber that promotes complete gas combustion and provides a realistic-appearing gas flame. The gas burner includes a burner pan and a T-shaped manifold that define a pair of adjustable-width rear gas exit slots for producing a rear flame between the logs and further define a front gas exit slot for producing a front flame. The exit slots can be adjusted in width to insure complete combustion for different gas type such as propane and natural gas. The andirons, the gas burner and the artificial logs are keyed to insure proper alignment.
Inventors
- 👤 Stephen F. Richardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:23
CPC Classifications
F; F24; F24C; F24C3/00; F24C3/002; F24C3/006
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
125 words
A gas burning artificial log assembly comprising: a plurality of artificial logs; gas burner means for providing a gas flame in the vicinity of said artificial logs, said gas burner means including a burner pan having a bottom plate, a burner manifold mounted on said bottom plate, said burner pan and said burner manifold defining a gas-carrying conduit including a rear gas exit slot aligned generally parallel to said artificial logs for producing a gas flame between said artificial logs and a front gas exit slot forward of said artificial logs for producing a gas flame in front of said artificial logs, and means for introducing gas into said gas-carrying conduit; and log support means for supporting said artificial logs above said gas burner means.
Claim 2
Dependent Claim
125 words
A gas burning artificial log assembly comprising: a plurality of artificial logs; gas burner means for providing a gas flame in the vicinity of said artificial logs, said gas burner means including a burner pan having a bottom plate, a burner manifold mounted on said bottom plate, said burner pan and said burner manifold defining a gas-carrying conduit including a rear gas exit slot aligned generally parallel to said artificial logs for producing a gas flame between said artificial logs and a front gas exit slot forward of said artificial logs for producing a gas flame in front of said artificial logs, and means for introducing gas into said gas-carrying conduit; and log support means for supporting said artificial logs above said gas burner means.
Claim 3
Dependent Claim
31 words
An artificial log assembly as defined in claim 1 wherein said burner manifold includes a lateral portion parallel to said logs and a centrally-located forward portion perpendicular to said lateral portion.
Claim 4
Dependent Claim
63 words
An artificial log assembly as defined in claim 2 wherein said burner pan includes at least one raised rib on said bottom plate, wherein said raised rib and said burner manifold define between them said rear gas exit slot, and wherein said burner manifold is movable relative to said raised rib so as to vary the width of said rear gas exit slot.
Claim 5
Dependent Claim
34 words
An artificial log assembly as defined in claim 2 wherein said forward portion of said burner manifold includes means defining said front gas exit slot above the level of said rear gas exit slot.
Claim 6
Dependent Claim
41 words
An artificial log assembly as defined in claim 1 wherein said support means includes a pair of spaced-apart andiron dogs for supporting said artificial logs and wherein said burner pan includes a generally upright rear wall for supporting said andiron dogs.
Claim 7
Dependent Claim
40 words
An artificial log assembly as defined in claim 1 including means for raising said burner pan above a support surface so that combustion air introduced below said bottom plate flows around the sides and rear thereof toward said artificial logs.
Claim 8
Dependent Claim
63 words
A gas burning artificial log assembly comprising: a plurality of artificial logs, gas burner means for providing a gas flame in the vicinity of said artificial logs, said gas burner means including means defining a gas-carrying conduit having an adjustable-width, elongated gas exit slot parallel to said artificial logs; and log support means for supporting said artificial logs above said gas burner means.
Claim 9
Dependent Claim
63 words
A gas burning artificial log assembly comprising: a plurality of artificial logs, gas burner means for providing a gas flame in the vicinity of said artificial logs, said gas burner means including means defining a gas-carrying conduit having an adjustable-width, elongated gas exit slot parallel to said artificial logs; and log support means for supporting said artificial logs above said gas burner means.
Claim 10
Dependent Claim
41 words
An artificial log assembly as defined in claim 7 wherein said artificial logs include at least a front log and a rear log and define between them a combustion region where at least a portion of said gas flame is located.
Claim 11
Dependent Claim
49 words
An artificial log assembly as defined in claim 8 wherein said artificial logs each have a front face and a rear face and are individually reversible on said support means between a forward position and a reversed position so that the front face or the rear face is visible.
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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) | 1992-12-11 | 1993-06-12 | 1993-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-12-11 | 1997-06-12 | 1997-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-12-11 | 2001-06-12 | 2001-12-12 | $7700.00 | Window Closed / Lapsed |