US4512329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat circulating fireplace grate assembly for gas fired logs
Assignee: Individual
•
Filing: 1984-04-13
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Granted: 1985-04-23
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Expires: 2004-04-13
Abstract
Abstract An elongate manifold is supported in the fireplace chamber with the manifold spaced from the back of and above the fireplace floor. Gas logs are supported by a grate adjacent the manifold for heating same. A forced air blower is located behind the manifold between the manifold and the back wall of the fireplace. A vertical heat shield plate is interposed between the manifold and blower. A duct system connects the blower with the manifold and with the room served by the fireplace so as to draw air from the room, force it through the manifold and return it to the room. Thermostatic switch means limits the operation of the blower to times when the heat generated by the fireplace is substantial enough to be useful in forced air heating.
Inventors
- 👤 Steven W. Sweet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:41
CPC Classifications
F; F24; F24B; F24B1/00; F24B1/18; F24B1/1808
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
138 words
A gas log grate assembly for a fireplace, said grate assembly including, (a) an elongate generally horizontal air manifold having an inlet near one end and an outlet near the other; (b) means for supporting said manifold between the front and back of the fireplace and spaced above the floor of the fireplace; (c) an air circulating blower positioned between said manifold and the back of the fireplace; (d) duct means connected with the inlet to and outlet from said manifold and with said blower and providing for intake of air from outside the fireplace into and through the blower and to said manifold and back from the manifold to outside the fireplace; (e) means for supporting gas fired logs in close proximity to said manifold; and (f) heat shield means disposed between said manifold and said blower.
Claim 2
Dependent Claim
138 words
A gas log grate assembly for a fireplace, said grate assembly including, (a) an elongate generally horizontal air manifold having an inlet near one end and an outlet near the other; (b) means for supporting said manifold between the front and back of the fireplace and spaced above the floor of the fireplace; (c) an air circulating blower positioned between said manifold and the back of the fireplace; (d) duct means connected with the inlet to and outlet from said manifold and with said blower and providing for intake of air from outside the fireplace into and through the blower and to said manifold and back from the manifold to outside the fireplace; (e) means for supporting gas fired logs in close proximity to said manifold; and (f) heat shield means disposed between said manifold and said blower.
Claim 3
Dependent Claim
26 words
A gas log grate assembly as in claim 1, (a) said heat shield means comprising a substantially upright plate located between said manifold and said blower.
Claim 4
Dependent Claim
37 words
A gas log grate assembly as in claim 1, (a) said means for supporting gas logs including a plurality of grate arms extending laterally forwardly from said manifold, said arms spaced from one another along the manifold.
Claim 5
Dependent Claim
120 words
A gas log grate assembly as in claim 1, (a) said duct means including, (i) an intake duct spaced below said manifold and extending from the front of the fireplace beneath the inlet end of said manifold and past said heat shield means to said blower, (ii) intermediate duct means connecting the discharge from the blower to the inlet to said manifold, (iii) a discharge duct parallel with said intake duct and spaced below the outlet end of said manifold and extending to the front of the fireplace, and (iv) intermediate duct means connecting said outlet from the manifold with the discharge duct whereby to provide a flow path for air from the manifold to the front of the fireplace.
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) | 1988-04-22 | 1988-10-22 | 1989-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-22 | 1992-10-22 | 1993-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-22 | 1996-10-22 | 1997-04-23 | $7700.00 | Window Closed / Lapsed |