Patent US3888231A successfully refreshed from Google Patents.
US3888231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fireplace for heat conservation and distribution
Assignee: Individual
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Filing: 1974-03-04
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Granted: 1975-06-10
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Expires: 1994-03-04
Abstract
Abstract The present invention relates to a fireplace structure for a dwelling or the like wherein relatively cool air from the lowest levels of the space in which the fireplace structure is located is drawn into heat exchanging contact with the exterior surfaces of the firebox walls, the air heated thereby being ducted to a desired outlet location in the dwelling for heating purposes. The cool air thus heated by heat exchange through the firebox walls serves to insulate the firebox from surrounding combustible materials. Insulation of the smoke flue which bears heated air and smoke particules away from the interior of the firebox is accomplished by the thermally-induced movement of relatively cold air from the exterior of the dwelling into an insulating relation about the smoke flue. The present fireplace structure is further provided with an adjustable telescoping fuel hopper for the selective introduction of fuel into the interior of the firebox.
Inventors
- 👤 Daniel T Galluzzo
- 👤 Christopher G Galluzzo
- 👤 Vincent Galluzzo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:10
CPC Classifications
F; F24; F24B; F24B1/00; F24B1/18; F24B1/185; F24B1/188; F24B1/1885; F24B1/191; F24B1/199
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
293 words
A fire place assembly for installation in a communicating relation with an environmental space in a structure such as a dwelling or the like, comprising: firebox means having heat exchange surfaces thereon and in which a fuel is oxidized to generate heat; means enclosing the firebox means in spaced relation thereto and cooperating therewith to define an air circulation chamber substantially therebetween; air intake means communicating the interior of the air circulation chamber with the aforesaid environmental space at a relatively low elevational level therein such that relatively cool air in said space is drawin into the air circulation chamber, the relatively cool air being heated therein on contact with the heat exchange surfaces on the firebox means, the air thus heated then being upwardly mobile to draw by way of a thermal suction effect additional relatively cool air into the air circulation chamber through the relatively low elevationally disposed air intake means; air outlet means for distributing the heated air in the air circulation chamber to a desired point of use; fuel hopper means disposed adjacent to said firebox means for introducing fuel contained in said hopper means into the firebox means, the fuel hopper means comprising container means for holding the fuel, said container means having an opening in a lower portion thereof, and chute means disposed to receive fuel thereinto from the opening in the container means, the chute means being extendible into the interior of the firebox means through an opening therein to dispense fuel thereinto; and, means for extending the chute means into the firebox means, said last-mentioned means comprising rack means on the chute means, and pinion means engageable with the rack means and moveable to advance the chute means into the interior of the firebox means.
Claim 2
Dependent Claim
293 words
A fire place assembly for installation in a communicating relation with an environmental space in a structure such as a dwelling or the like, comprising: firebox means having heat exchange surfaces thereon and in which a fuel is oxidized to generate heat; means enclosing the firebox means in spaced relation thereto and cooperating therewith to define an air circulation chamber substantially therebetween; air intake means communicating the interior of the air circulation chamber with the aforesaid environmental space at a relatively low elevational level therein such that relatively cool air in said space is drawin into the air circulation chamber, the relatively cool air being heated therein on contact with the heat exchange surfaces on the firebox means, the air thus heated then being upwardly mobile to draw by way of a thermal suction effect additional relatively cool air into the air circulation chamber through the relatively low elevationally disposed air intake means; air outlet means for distributing the heated air in the air circulation chamber to a desired point of use; fuel hopper means disposed adjacent to said firebox means for introducing fuel contained in said hopper means into the firebox means, the fuel hopper means comprising container means for holding the fuel, said container means having an opening in a lower portion thereof, and chute means disposed to receive fuel thereinto from the opening in the container means, the chute means being extendible into the interior of the firebox means through an opening therein to dispense fuel thereinto; and, means for extending the chute means into the firebox means, said last-mentioned means comprising rack means on the chute means, and pinion means engageable with the rack means and moveable to advance the chute means into the interior of the firebox means.
Claim 3
Dependent Claim
37 words
The fireplace assembly of claim 1 and further comprising hearth means having heat exchange surfaces thereon, the hearth means acting to further define the air circulation chamber and to contact the air therein to heat said air.
Claim 4
Dependent Claim
47 words
The fireplace assembly of claim 2 wherein the hearth means is formed with a convoluted surface bounding the air circulation chamber, the convoluted surface substantially forming the heat exchange surface on said hearth means thereby to increase heat transfer to the air in the air circulation chamber.
Claim 5
Dependent Claim
47 words
The fireplace assembly of claim 1 and further comprising flue means for discharging heated air, gaseous products of combustion, and suspended particulate matter in the heated air from the firebox means, the flue means including air circulatory means for insulatably surrounding the heated air and combustion products.
Claim 6
Dependent Claim
241 words
The fireplace assembly of claim 4 wherein the flue means comprise: a smoke flue centrally disposed in said flue means and extending from communication with the firebox means to a point external of the aforesaid structure, heated air and gaseous products of combustion being discharged from the firebox means through the smoke flue; an air outlet flue spaced from and concentrically disposed about the smoke flue and defining a first chamber therebetween, the air outlet flue extending externally of the structure; and, an air inlet flue spaced from and concentrically disposed about the air outlet flue and defining a second chamber therebetween, the second chamber communicating with the first chamber at a location spaced from the firebox means, the air inlet flue extending externally of the structure for receiving relatively cold air thereinto, said cold air circulating through the second chamber and into the first chamber, the first chamber bounding the smoke flue, relatively cold air in said first chamber acting to insulate said smoke flue, the relatively cold air being heated by heat transfer from said smoke flue and rising in said first chamber to exit the air outlet flue extErnally of the structure, the air thus heated being upwardly mobile to draw by way of a thermal suction effect additional relatively cold air through said air inlet flue and into heat exchanging relation to said smoke flue and subsequently out of the air outlet flue in a circulating fashion.
Claim 7
Dependent Claim
34 words
The fireplace assembly of claim 1 and further comprising duct means for distributing the heated air in the air circulation chamber to a point of use at a location remote from said fireplace assembly.
Claim 8
Dependent Claim
28 words
The fireplace assembly of claim 1 and further comprising ash dump means disposed in a lower portion of said firebox means for receiving ash residue in the firebox.
Claim 9
Dependent Claim
48 words
The fireplace assembly of claim 7 and further comprising ash drawer means disposed beneath the firebox means and receiving ash residue thereinto from the ash dump means in the firebox means, the ash drawer means being removable from the fireplace assembly for convenient disposal of the ash residue.
Claim 10
Dependent Claim
46 words
The fireplace assembly of claim 1 and further comprising fireproof cap means on the end of the chute means which extends into the interior of the firebox means, the cap means acting to close the opening in said firebox means through which the chute means extend.
References Cited (Backward Citations)
US1896252A
Cited
US1411132A
Cited
US1638286A
Cited
US2080323A
Cited
US2375318A
Cited
US2821975A
Cited
US3096754A
Cited
US3190281A
Cited
US3724443A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-09 | 1978-12-09 | 1979-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-09 | 1982-12-09 | 1983-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-09 | 1986-12-09 | 1987-06-10 | $7700.00 | Window Closed / Lapsed |