US4008703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fireplace heating system
Assignee: Individual
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Filing: 1975-04-17
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Granted: 1977-02-22
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Expires: 1995-04-17
Abstract
Abstract A plurality of interconnected pipes are installed in a fireplace to utilize the heat generated therein for the purpose of heating a room. The pipes are arranged in upper and lower sections that provides a pair of closed paths in which air is circulated by a fan. Cast iron slugs are spaced within the pipes in order to transfer heat to the circulating air and to increase the air turbulence. Outlet conduits receive heated air from the upper and lower sections and distribute it in the area that is to be heated.
Inventors
- 👤 Tommy L. Allgood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:27
CPC Classifications
F; F24; F24B; F24B1/00; F24B1/18; F24B1/185; F24B1/188; F24B1/1885; F24B1/1886
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
202 words
A heating system for delivering heat from a fireplace to an area remote from the fireplace, the system comprising: a plurality of conduits adapted to be installed in the fireplace and interconnected with one another to cooperate in defining an endless, closed loop path for accommodating a flow of air therethrough, said conduits being comprised of heat conducting material to enable heat generated in the fireplace to be transferred to air flowing within said path, said path having an inlet for receiving incoming air and a pair of outlets for discharging heated air; a plurality of substantially solid slugs disposed in said path at spaced apart locations therein, said slugs being comprises of heat conducting material to transfer heat to the air passing thereby; a fan located exteriorly of the fireplace, said fan having an inlet and an outlet; means connecting said fan outlet with the inlet to said path, said fan thereby being operable to force air into said path and to circulate air therein; and air distributing means connected to the outlets of said path and extending to said remote area, said air distributing means receiving heated air from said path and distributing the heated air to said remote area.
Claim 2
Dependent Claim
202 words
A heating system for delivering heat from a fireplace to an area remote from the fireplace, the system comprising: a plurality of conduits adapted to be installed in the fireplace and interconnected with one another to cooperate in defining an endless, closed loop path for accommodating a flow of air therethrough, said conduits being comprised of heat conducting material to enable heat generated in the fireplace to be transferred to air flowing within said path, said path having an inlet for receiving incoming air and a pair of outlets for discharging heated air; a plurality of substantially solid slugs disposed in said path at spaced apart locations therein, said slugs being comprises of heat conducting material to transfer heat to the air passing thereby; a fan located exteriorly of the fireplace, said fan having an inlet and an outlet; means connecting said fan outlet with the inlet to said path, said fan thereby being operable to force air into said path and to circulate air therein; and air distributing means connected to the outlets of said path and extending to said remote area, said air distributing means receiving heated air from said path and distributing the heated air to said remote area.
Claim 3
Dependent Claim
50 words
A combination as set forth in claim 1 said slugs being of substantially cylindrical configuration and each slug having its longitudinal axis oriented generally parallel to the direction of air flow in said path, each slug presenting a substantially planar face oriented to face generally toward the air flowing theretoward.
Claim 4
Dependent Claim
37 words
A combination as set forth in claim 1, including means for supporting said conduits above the fireplace floor, said conduit supporting means comprising heat conducting material disposed in direct contact with said conduits to transfer heat thereto.
Claim 5
Dependent Claim
24 words
A combination as set forth in claim 1, wherein said outlets are substantially equidistant from the inlet to said path in opposite directions therefrom.
Claim 6
Dependent Claim
47 words
A combination as set forth in claim 1, including a thermally insulated fan housing enclosing said fan and a thermally inslulated conduit extending between a source of room temperature air and said fan inlet, whereby said fan is operable to deliver room temperture air to said path.
Claim 7
Dependent Claim
113 words
A combination as set forth in claim 1, including: a second series of conduits interconnected with one another to cooperate in defining a second endless, closed loop path for accommodating a flow of air therethrough, the conduits in said second series being comprised of heat conducting material to enable heat to be transferred to air flowing within said second path, said second path having an inlet and at least one outlet communicating with said air distributing means; means communicating said fan outlet with the inlet to said second path; and means for supporting said second series of conduits within said fireplace at a position elevated above the first mentioned plurality of interconnected conduits.
Claim 8
Dependent Claim
162 words
A heating system for delivering heat from a fireplace to an area remote from the fireplace, comprising: a lower tier of heat conductive conduits adapted to be installed in the fireplace and interconnected to present an endless loop configuration providing a first closed path for accommodating a flow of air, said first path having an inlet and and outlet; an upper tier of heat conductive conduits interconnected to present an endless loop configuration providing a second closed path for accommodating a flow of air, said second path having an inlet and and outlet; means supporting said upper tier of conduits at an elevated position above said first tier; fan means located exteriorly of the fireplace in communication with the inlets to said first and second paths, said fan means operable to force air into each path for circulation therein; and air distributing means extending from the outlets of said first and second paths to said remote area to deliver heated air thereto.
Claim 9
Dependent Claim
162 words
A heating system for delivering heat from a fireplace to an area remote from the fireplace, comprising: a lower tier of heat conductive conduits adapted to be installed in the fireplace and interconnected to present an endless loop configuration providing a first closed path for accommodating a flow of air, said first path having an inlet and and outlet; an upper tier of heat conductive conduits interconnected to present an endless loop configuration providing a second closed path for accommodating a flow of air, said second path having an inlet and and outlet; means supporting said upper tier of conduits at an elevated position above said first tier; fan means located exteriorly of the fireplace in communication with the inlets to said first and second paths, said fan means operable to force air into each path for circulation therein; and air distributing means extending from the outlets of said first and second paths to said remote area to deliver heated air thereto.
Claim 10
Dependent Claim
76 words
The invention of claim 7, wherein the means supporting said upper tier includes a pair of substantially vertical pipe members rigidly connected to extend between said lower and upper tiers at spaced locations, said first path having a pair of spaced outlets with the respective pipe members connected therewith, said distributing means connecting with each of said pipes members at a location intermediate the length thereof to deliver the heated air discharged from said first path.
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) | 1980-02-22 | 1980-08-23 | 1981-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-22 | 1984-08-23 | 1985-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-22 | 1988-08-23 | 1989-02-22 | $7700.00 | Window Closed / Lapsed |