US4465055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fireplace stove assembly
Assignee: VERMONT STOVE COMPANY INC SHELBURNE ROAD BOX 368 SHELBURNE VERMONT 05482 A CORP OF VERMONT
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Filing: 1981-12-29
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Granted: 1984-08-14
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Expires: 2001-12-29
Abstract
Abstract The assembly is adapted for replaceable and operative installation within the opening of a standard fireplace. It comprises a combustion chamber and conduitry to accomodate ambient air entry into the chamber in a number of patterns and includes an arrangement for air preheating. Air is also heated by contact with the outside of the chamber and is expelled with mechanical assistance. Exhaust smoke is expelled through a baffle system in order to extract therefrom all useful heat.
Inventors
- 👤 Paul B. Bortz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:51
CPC Classifications
F; F24; F24B; F24B5/00; F24B5/02; F24B7/00; F24B7/02
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
232 words
A fireplace stove assembly, for replaceable and operative installation thereof within the opening of a standard fireplace, or the like, comprising: means defining a chamber, in which to burn combustible products; said chamber having a grate, on which to support combustible products for combustion side walls and a rear wall rising substantially normal from, and partially circumscribing, said grate; said walls defining a substantially vertical combustion enclosure having a center portion above said grate, and a rear portion adjacent to said grate, within which to accommodate rising smoke and gasses; first means for introducing unforced ambient air downwardly relative to, and into, said enclosure and having outlets both at said center and rear portions thereof, to force unburned gases, rising within said combustion enclosure, down toward said grate for combustion thereof with any combustible products in combustion on said grate; said rear wall has a given length, from said grate to an uppermost portion of said enclosure; and further including conduit means for introducing ambient air into said enclosure at a location intermediate the length of said rear wall; said first means further comprising conduit means having an opening at one end thereof which is in fluid-flow communication with said first means, and having an opening at the opposite end thereof which is exposed to said enclosure, and opens thereinto at said intermediate location to admit ambient air into said enclosure thereat.
Claim 2
Dependent Claim
232 words
A fireplace stove assembly, for replaceable and operative installation thereof within the opening of a standard fireplace, or the like, comprising: means defining a chamber, in which to burn combustible products; said chamber having a grate, on which to support combustible products for combustion side walls and a rear wall rising substantially normal from, and partially circumscribing, said grate; said walls defining a substantially vertical combustion enclosure having a center portion above said grate, and a rear portion adjacent to said grate, within which to accommodate rising smoke and gasses; first means for introducing unforced ambient air downwardly relative to, and into, said enclosure and having outlets both at said center and rear portions thereof, to force unburned gases, rising within said combustion enclosure, down toward said grate for combustion thereof with any combustible products in combustion on said grate; said rear wall has a given length, from said grate to an uppermost portion of said enclosure; and further including conduit means for introducing ambient air into said enclosure at a location intermediate the length of said rear wall; said first means further comprising conduit means having an opening at one end thereof which is in fluid-flow communication with said first means, and having an opening at the opposite end thereof which is exposed to said enclosure, and opens thereinto at said intermediate location to admit ambient air into said enclosure thereat.
Claim 3
Dependent Claim
51 words
A fireplace stove assembly, according to claim 1, wherein: said conduit means comprises means cooperative with said combustion enclosure for pre-heating air which is admitted thereby into said enclosure; said air pre-heating means comprises a conduit which traverses said enclosure above said grate to cause combustion heat to heat said conduit.
Claim 4
Dependent Claim
73 words
A fireplace stove assembly, according to claim 1, further including: means for pre-heating air which is admitted into said enclosure by said conduit means; wherein said pre-heating means comprises a heat exchanger fixed to one of said walls; said heat exchanger having a duct through which to exhaust combustion smoke and gases; and said conduit means comprises a conduit, a portion of the latter being in juxtaposed, heat-exchanging disposition relative to said duct.
Claim 5
Dependent Claim
27 words
A fireplace stove assembly, according to claim 3, wherein: said duct comprises an exhaust manifold; and said manifold has a plurality of heat-absorbing and heat-radiating fins therewithin.
Claim 6
Dependent Claim
47 words
A fireplace stove assembly, according to claim 3, further including: an exhaust chamber for smoke and gases; and means communicating said exhaust chamber and said heat exchanger, defining an exhaust channel; said channel comprising means for causing smoke and gases to describe a baffled, serpentine path therealong.
Claim 7
Dependent Claim
66 words
A fireplace stove assembly, according to claim 5, wherein: said enclosure has a rear defined by one of said walls, and an open front; and said channel includes means for causing smoke and gases to travel, sequentially, from said rear of said enclosure toward said front thereof, to travel across said front, and to turn toward said rear again and then rise to said exhaust chamber.
Claim 8
Dependent Claim
19 words
A fireplace stove assembly, according to claim 6, wherein: said exhaust chamber includes damper means for controlling exhaust smoke.
Claim 9
Dependent Claim
16 words
A fireplace stove assembly, according to claim 7, wherein: said damper means has manual control means.
Claim 10
Dependent Claim
43 words
A fireplace stove assembly, according to claim 3, further including: means defining an air passageway which underlies said grate, rises alongside one of said walls on a side of said one wall which is opposite said combustion enclosure, and overlies said combustion enclosure.
Claim 11
Dependent Claim
23 words
A fireplace stove assembly, according to claim 9, further including: means interposed in said air passageway for impelling air for travel thereof therealong.
Claim 12
Dependent Claim
26 words
A fireplace stove assembly, according to claim 10, further including: said impelling means has control means for regulating the level of output of said impelling means.
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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) | 1987-08-14 | 1988-02-13 | 1988-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-14 | 1992-02-13 | 1992-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-14 | 1996-02-13 | 1996-08-14 | $7700.00 | Window Closed / Lapsed |