US4325353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating apparatus
Assignee: Individual
•
Filing: 1980-05-02
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Granted: 1982-04-20
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Expires: 2000-05-02
Abstract
Abstract An apparatus for the heating of ambient air within enclosed chambers in the walls of a fireplace, providing a more efficient means of utilizing the heat radiation produced by a fireplace and also to provide fresh warm air for heating purposes throughout a home is disclosed. Cold ambient temperature air is forced into the system by a two-speed fan through a cold air conduit into the outer chamber of the fireplace apparatus. The air is forced up the outer chamber to the top of the chimney where it crosses over to the inner heating chamber and the diagonal duct located within the flue space of the chimney. As the air progresses down the inner warm air passageway and the diagonal flue duct, it is heated by conduction through a metal wall in contact with the hot gases produced by the fire. The air then is forced down through these passageways into the rear and sides of the firebox. The air is fed thorugh a manifold grating under the fire, and then collected in the hot air plenum located at the base of the firebox. The thoroughly warm air is then forced out an exit conduit into an existing furnace heat plenum for distribution throughout the house.
Inventors
- 👤 Marlin V. Husa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:13
CPC Classifications
F; F24; F24B; F24B1/00; F24B1/18; F24B1/185; F24B1/188; F24B1/1885
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
150 words
An improvement in heating apparatus of a type having a firebox in fluid communication with a chimney wherein the improvement comprises: (a) Updraft passageways surrounding the firebox; (b) Downdraft passageways surrounding the firebox wherein the downdraft passageways are in fluid communication with the updraft passageways; (c) A diagonal downdraft duct transversing the interior of the chimney space, in fluid communication with said updraft and downdraft passageways; (d) A front manifold in communication with said downdraft passageways; (e) Inlet means wherein unheated air is introduced into the updraft passageways; (f) Exit means wherein said exit means are in fluid communication with said front manifold means; (g) An exhaust chimney wherein said updraft passageways and said downdraft passageways extend into said chimney; and (h) Forced air means for forcibly moving air through the inlet means, the updraft passageways, the downdraft passageways, the diagonal downdraft duct, the front manifold, and the exit means.
Claim 2
Dependent Claim
150 words
An improvement in heating apparatus of a type having a firebox in fluid communication with a chimney wherein the improvement comprises: (a) Updraft passageways surrounding the firebox; (b) Downdraft passageways surrounding the firebox wherein the downdraft passageways are in fluid communication with the updraft passageways; (c) A diagonal downdraft duct transversing the interior of the chimney space, in fluid communication with said updraft and downdraft passageways; (d) A front manifold in communication with said downdraft passageways; (e) Inlet means wherein unheated air is introduced into the updraft passageways; (f) Exit means wherein said exit means are in fluid communication with said front manifold means; (g) An exhaust chimney wherein said updraft passageways and said downdraft passageways extend into said chimney; and (h) Forced air means for forcibly moving air through the inlet means, the updraft passageways, the downdraft passageways, the diagonal downdraft duct, the front manifold, and the exit means.
Claim 3
Dependent Claim
25 words
The improvement in heating apparatuses as described in claim 1, wherein said diagonal duct is essentially comprised of sheet metal through which heat can pass.
Claim 4
Dependent Claim
30 words
The improvement in heating apparatuses as described in claim 1, further comprising a damper means operably disposed with said exhaust chimney wherein said damper means partially restrict said exhaust chimney.
Claim 5
Dependent Claim
25 words
The improvement in heating apparatuses as described in claim 1, further comprising a valve means for controlling the introduction of air into the inlet means.
Claim 6
Dependent Claim
22 words
The improvement in heating apparatuses as described in claim 4, further comprising a two-position thermostatically controlled means operably connected to the firebox.
Claim 7
Dependent Claim
28 words
The improvement in heating apparatuses as described in claim 1, further comprising a first plurality of air jets within the front manifold for supplying air to the firebox.
Claim 8
Dependent Claim
22 words
The improvement in heating apparatuses as described in claim 1, further comprising a partition means for sealing the firebox from ambient air.
Claim 9
Dependent Claim
30 words
The improvement in heating apparatuses as described in claim 1, further comprising a second plurality of jets within said front manifold means for directing heated air upon said partition means.
Claim 10
Dependent Claim
252 words
An improvement in heating apparatuses of a type having a firebox in fluid communication with a chimney wherein the improvement comprises: (a) Updraft passage ways surrounding the firebox; (b) Downdraft passageways surrounding the firebox wherein the downdraft passageways are in fluid communication with the updraft passageways; (c) A front manifold in fluid communication with said downdraft passageways; (d) A diagonal downdraft duct traversing the interior of the chimney space, in fluid communication with said updraft and downdraft passageways; (e) Inlet means wherein unheated air is introduced into the updraft passageways in fluid communication with the updraft passageways; (f) Exit means wherein said exit means are in fluid communication with said from manifold means; (g) An exhaust chimney wherein said updraft passageways and said downdraft passageways extend into said chimney; (h) Forced air means for forcibly moving air through the inlet means, the updraft passageways, the downdraft passageways, the diagonal downdraft duct, the front manifold, and the exit means; (i) A damper means operably disposed within said exhaust chimney wherein said damper means partially restrict said exhaust chimney; (j) A valve means for controlling the introduction of air into the inlet means; (k) A first plurality of air jets within the front manifold for supplying air to the firebox; (l) A two-position thermostatically controlled means operably connected to said forced air means; (m) A partition means for sealing the firebox from ambient air; and, (n) A second plurality of jets within said front manifold means for directing heated air upon said partition means.
Claim 11
Dependent Claim
252 words
An improvement in heating apparatuses of a type having a firebox in fluid communication with a chimney wherein the improvement comprises: (a) Updraft passage ways surrounding the firebox; (b) Downdraft passageways surrounding the firebox wherein the downdraft passageways are in fluid communication with the updraft passageways; (c) A front manifold in fluid communication with said downdraft passageways; (d) A diagonal downdraft duct traversing the interior of the chimney space, in fluid communication with said updraft and downdraft passageways; (e) Inlet means wherein unheated air is introduced into the updraft passageways in fluid communication with the updraft passageways; (f) Exit means wherein said exit means are in fluid communication with said from manifold means; (g) An exhaust chimney wherein said updraft passageways and said downdraft passageways extend into said chimney; (h) Forced air means for forcibly moving air through the inlet means, the updraft passageways, the downdraft passageways, the diagonal downdraft duct, the front manifold, and the exit means; (i) A damper means operably disposed within said exhaust chimney wherein said damper means partially restrict said exhaust chimney; (j) A valve means for controlling the introduction of air into the inlet means; (k) A first plurality of air jets within the front manifold for supplying air to the firebox; (l) A two-position thermostatically controlled means operably connected to said forced air means; (m) A partition means for sealing the firebox from ambient air; and, (n) A second plurality of jets within said front manifold means for directing heated air upon said partition means.
Claim 12
Dependent Claim
21 words
The improvement in heating apparatuses as described in claim 9, further comprising an ash collection means operably disposed within said firebox.
Claim 13
Dependent Claim
22 words
The improvement in heating apparatuses as described in claim 10, further comprising a plurality of safety grates operably disposed within said firebox.
Claim 14
Dependent Claim
140 words
An improvement in heating apparatus of a type having a chimney wherein the improvement comprises: (a) Updraft passageways surrounding the chimney; (b) First downdraft passageways surrounding the chimney wherein the downdraft passageways are in fluid communication with the updraft passageways; (c) Second downdraft passageways in fluid communication between said first downdraft passageways; (d) A diagonal downdraft duct traversing the interior of the chimney space, in fluid communication between said downdraft and said updraft passageways; (e) Inlet means wherein unheated air is introduced into the updraft passageways in fluid communication with the updraft passageways; (f) Exit means wherein said exit means are in fluid communication with said downdraft passageways; and (g) Forced air means for forcibly moving air through the inlet means, the updraft passageways, the first downdraft passageways, the second downdraft passageways, the diagonal downdraft duct and the exit means.
Claim 15
Dependent Claim
140 words
An improvement in heating apparatus of a type having a chimney wherein the improvement comprises: (a) Updraft passageways surrounding the chimney; (b) First downdraft passageways surrounding the chimney wherein the downdraft passageways are in fluid communication with the updraft passageways; (c) Second downdraft passageways in fluid communication between said first downdraft passageways; (d) A diagonal downdraft duct traversing the interior of the chimney space, in fluid communication between said downdraft and said updraft passageways; (e) Inlet means wherein unheated air is introduced into the updraft passageways in fluid communication with the updraft passageways; (f) Exit means wherein said exit means are in fluid communication with said downdraft passageways; and (g) Forced air means for forcibly moving air through the inlet means, the updraft passageways, the first downdraft passageways, the second downdraft passageways, the diagonal downdraft duct and the exit means.
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) | 1985-04-19 | 1985-10-19 | 1986-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-04-19 | 1989-10-19 | 1990-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-04-19 | 1993-10-19 | 1994-04-20 | $7700.00 | Window Closed / Lapsed |