Patent US5320086A successfully refreshed from Google Patents.
US5320086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Direct vent gas appliance with vertical and horizontal venting
Assignee: Monessen Hearth Systems Co
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Filing: 1993-02-16
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Granted: 1994-06-14
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Expires: 2013-02-16
Abstract
Abstract The invention relates to a direct vent gas fireplace adapted for attachment to a concentric flue pipe assembly having an exhaust pipe and fresh air pipe. A top wall, rear wall, bottom wall and side walls define a combustion chamber. A gas burner is disposed in the combustion chamber. A slanted flue attachment wall is attached to and extends between the top wall and rear wall. The slanted flue attachment wall is disposed at obtuse angles relative to the top wall and rear wall. A first pipe member is orthogonally attached to the flue attachment wall and is in fluid communication with the combustion chamber for conveying combustion products from the combustion chamber. A second pipe member having a diameter larger than the first pipe member is disposed concentrically around the first pipe member. The first and second pipe members define an annular space therebetween forming an air intake duct. A combustion air duct extends between and is in fluid communication with the air intake duct and the combustion chamber for supplying combustion air to the combustion chamber. The exhaust pipe and fresh air pipe are respectively attached to the first and second pipe members and can be selectively oriented to extend away from the fireplace in a substantially vertical or horizontal direction.
Inventors
- 👤 Thomas J. Beal
- 👤 Albert K. Teakell
- 👤 Robert E. Cabrera
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:30
CPC Classifications
F; F24; F24C; F24C3/00; F24C3/002; F24C3/004; F23; F23J; F23J13/00; F23J13/02; F23J13/025; F24B; F24B1/00; F24B1/18; F24B1/1808; F23J2211/00; F23J2211/10; F23J2211/101
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
237 words
A direct vent gas fireplace adapted for attachment to a flue pipe assembly including an exhaust pipe and a surrounding fresh air pipe, said fireplace comprising: an interior housing forming a combustion chamber; a top wall, rear wall, bottom wall and side walls defining an exterior housing about said combustion chamber; a gas burner disposed in said combustion chamber; a slanted wall attached to and extending between said top and rear walls, said slanted wall disposed at obtuse angles relative to said top and rear walls; a first pipe member orthogonally extending to an opening in said slanted wall and in fluid communication with said combustion chamber for conveying combustion products from said combustion chamber; means forming a first plenum having a diameter larger than said first pipe and disposed around said first pipe member and in communication with said opening in said slanted wall, said first pipe member and said first plenum defining an annular space therebetween forming an air intake duct; and a combustion air duct extending between and in fluid communication with said first plenum and said combustion chamber for supplying combustion air to said combustion chamber; whereby the exhaust pipe and fresh air pipe of the flue pipe assembly are respectively adapted to be attached to said first pipe member and said first plenum and can be selectively oriented to extend away from said fireplace in either a substantially vertical or horizontal direction.
Claim 2
Dependent Claim
237 words
A direct vent gas fireplace adapted for attachment to a flue pipe assembly including an exhaust pipe and a surrounding fresh air pipe, said fireplace comprising: an interior housing forming a combustion chamber; a top wall, rear wall, bottom wall and side walls defining an exterior housing about said combustion chamber; a gas burner disposed in said combustion chamber; a slanted wall attached to and extending between said top and rear walls, said slanted wall disposed at obtuse angles relative to said top and rear walls; a first pipe member orthogonally extending to an opening in said slanted wall and in fluid communication with said combustion chamber for conveying combustion products from said combustion chamber; means forming a first plenum having a diameter larger than said first pipe and disposed around said first pipe member and in communication with said opening in said slanted wall, said first pipe member and said first plenum defining an annular space therebetween forming an air intake duct; and a combustion air duct extending between and in fluid communication with said first plenum and said combustion chamber for supplying combustion air to said combustion chamber; whereby the exhaust pipe and fresh air pipe of the flue pipe assembly are respectively adapted to be attached to said first pipe member and said first plenum and can be selectively oriented to extend away from said fireplace in either a substantially vertical or horizontal direction.
Claim 3
Dependent Claim
39 words
The fireplace of claim 1, wherein said combustion air duct comprises a second air collector plenum attached to said first plenum and at least one air distribution conduit extending between said second air collector plenum and said combustion chamber.
Claim 4
Dependent Claim
17 words
The fireplace of claim 2, comprising two said air distribution conduits respectively attached to said side walls.
Claim 5
Dependent Claim
25 words
The fireplace of claim 2, wherein said combustion air duct further comprises a third plenum having an opening in fluid communication with said combustion chamber.
Claim 6
Dependent Claim
53 words
The fireplace of claim 1, wherein said exterior housing and said interior housing define a space therebetween forming a room air circulation channel having a blower disposed therein, said blower receiving ambient air and circulating the air through said room air circulation channel, the air heated thereby and exhausted to the ambient environment.
Claim 7
Dependent Claim
18 words
The fireplace of claim 5, wherein said combustion air duct is disposed within said room air circulation channel.
Claim 8
Dependent Claim
17 words
The fireplace of claim 5, wherein said first plenum includes a flange extending through said slanted wall.
Claim 9
Dependent Claim
217 words
A direct vent gas fireplace, comprising: an interior housing forming a combustion chamber; a top wall, rear wall, bottom wall and side walls defining an exterior housing about said combustion chamber; a gas burner disposed in said combustion chamber; a slanted wall connected to and extending between said top and rear walls, said slanted wall disposed at obtuse angles relative to said top and rear walls; a first pipe member orthogonally extending to an opening in said slanted wall and in fluid communication with said combustion chamber for conveying combustion products from said combustion chamber; means forming a first plenum having a diameter larger than said first pipe and disposed around said first pipe member and in communication with said opening in said slanted wall, said first pipe member and said first plenum defining an annular space therebetween forming an air intake duct; and a combustion air duct extending between and in fluid communication with said plenum and said combustion chamber for supplying combustion air to said combustion chamber; whereby the exhaust pipe and fresh air pipe of the flue pipe assembly form a 135° angle and are respectively attached to said first pipe member and said plenum and can be oriented to extend away from said fireplace selectively in either a substantially vertical or horizontal direction.
Claim 10
Dependent Claim
217 words
A direct vent gas fireplace, comprising: an interior housing forming a combustion chamber; a top wall, rear wall, bottom wall and side walls defining an exterior housing about said combustion chamber; a gas burner disposed in said combustion chamber; a slanted wall connected to and extending between said top and rear walls, said slanted wall disposed at obtuse angles relative to said top and rear walls; a first pipe member orthogonally extending to an opening in said slanted wall and in fluid communication with said combustion chamber for conveying combustion products from said combustion chamber; means forming a first plenum having a diameter larger than said first pipe and disposed around said first pipe member and in communication with said opening in said slanted wall, said first pipe member and said first plenum defining an annular space therebetween forming an air intake duct; and a combustion air duct extending between and in fluid communication with said plenum and said combustion chamber for supplying combustion air to said combustion chamber; whereby the exhaust pipe and fresh air pipe of the flue pipe assembly form a 135° angle and are respectively attached to said first pipe member and said plenum and can be oriented to extend away from said fireplace selectively in either a substantially vertical or horizontal direction.
Claim 11
Dependent Claim
221 words
A direct vent fireplace adapted for attachment to a flue pipe assembly including an exhaust pipe and surrounding fresh air pipe, said fireplace comprising: an interior housing forming a combustion chamber; a top wall, rear wall, bottom wall, side walls and front opening defining an exterior housing about said combustion chamber; a slanted wall attached to and extending between said top wall and rear walls and forming obtuse angles relative to said top and rear walls; a first pipe member orthogonally extending to an opening in said slanted wall and in fluid communication with said combustion chamber for conveying combustion products from said combustion chamber; means forming a plenum having a diameter larger than said first pipe and disposed around said first pipe member and in communication with said opening in said slanted wall, said first pipe member and said plenum defining an annular space therebetween forming an air intake duct; and a combustion air duct extending between and in fluid communication with said plenum and said combustion chamber for supplying combustion air to said combustion chamber; whereby the exhaust pipe and fresh air pipe are adapted to be respectively adapted to be attached to said first pipe member and said plenum and can be oriented to extend away from said fireplace selectively in either a substantially vertical or horizontal direction.
Claim 12
Dependent Claim
221 words
A direct vent fireplace adapted for attachment to a flue pipe assembly including an exhaust pipe and surrounding fresh air pipe, said fireplace comprising: an interior housing forming a combustion chamber; a top wall, rear wall, bottom wall, side walls and front opening defining an exterior housing about said combustion chamber; a slanted wall attached to and extending between said top wall and rear walls and forming obtuse angles relative to said top and rear walls; a first pipe member orthogonally extending to an opening in said slanted wall and in fluid communication with said combustion chamber for conveying combustion products from said combustion chamber; means forming a plenum having a diameter larger than said first pipe and disposed around said first pipe member and in communication with said opening in said slanted wall, said first pipe member and said plenum defining an annular space therebetween forming an air intake duct; and a combustion air duct extending between and in fluid communication with said plenum and said combustion chamber for supplying combustion air to said combustion chamber; whereby the exhaust pipe and fresh air pipe are adapted to be respectively adapted to be attached to said first pipe member and said plenum and can be oriented to extend away from said fireplace selectively in either a substantially vertical or horizontal direction.
Claim 13
Dependent Claim
261 words
A direct vent gas fireplace, comprising: a flue pipe assembly having an exhaust pipe and fresh air pipe, said fresh air pipe having a diameter larger than and disposed around said exhaust pipe, each of said exhaust pipe and fresh air pipe having first and second tubular portions disposed at about a 135° angle relative to each other; an interior housing forming a combustion chamber; a top wall, rear wall, bottom wall and two side walls defining an exterior housing about said combustion chamber; a gas burner disposed within said combustion chamber; a slanted wall attached to and extending between said top wall and rear wall, said slanted wall disposed at an angle of about 45° with respect to a horizontal plane; a first pipe member orthogonally extending to an opening in said slanted wall and in fluid communication with said combustion chamber for conveying combustion products from said combustion chamber; means forming a first plenum having a diameter larger than and disposed around said first pipe, said first pipe member and said first plenum defining an annular space therebetween forming an air intake duct; and a combustion air duct extending between and in fluid communication with said air intake duct and said combustion chamber for supplying combustion air to said combustion chamber; said first tubular portions of each said exhaust pipe and fresh air pipe respectively attachable to said first pipe member and said first plenum whereby said second tubular portions of each said exhaust pipe and fresh air pipe are selectively disposed in a substantially vertical or horizontal direction.
Claim 14
Dependent Claim
261 words
A direct vent gas fireplace, comprising: a flue pipe assembly having an exhaust pipe and fresh air pipe, said fresh air pipe having a diameter larger than and disposed around said exhaust pipe, each of said exhaust pipe and fresh air pipe having first and second tubular portions disposed at about a 135° angle relative to each other; an interior housing forming a combustion chamber; a top wall, rear wall, bottom wall and two side walls defining an exterior housing about said combustion chamber; a gas burner disposed within said combustion chamber; a slanted wall attached to and extending between said top wall and rear wall, said slanted wall disposed at an angle of about 45° with respect to a horizontal plane; a first pipe member orthogonally extending to an opening in said slanted wall and in fluid communication with said combustion chamber for conveying combustion products from said combustion chamber; means forming a first plenum having a diameter larger than and disposed around said first pipe, said first pipe member and said first plenum defining an annular space therebetween forming an air intake duct; and a combustion air duct extending between and in fluid communication with said air intake duct and said combustion chamber for supplying combustion air to said combustion chamber; said first tubular portions of each said exhaust pipe and fresh air pipe respectively attachable to said first pipe member and said first plenum whereby said second tubular portions of each said exhaust pipe and fresh air pipe are selectively disposed in a substantially vertical or horizontal direction.
Claim 15
Dependent Claim
29 words
The fireplace of claim 10, wherein said combustion air duct further comprises at least one second plenum having a plurality of openings in fluid communication with said combustion chamber.
Claim 16
Dependent Claim
53 words
The fireplace of claim 10, wherein said exterior housing and said interior housing define a space therebetween forming a room air circulation channel having a blower disposed therein, said blower receiving ambient air and circulating the air through said room air circulation channel, the air heated thereby and exhausted to the ambient environment.
Claim 17
Dependent Claim
22 words
The fireplace of claim 12, wherein said combustion air duct comprises said first plenum comprising a flange extending through said slanted wall.
Claim 18
Dependent Claim
228 words
A direct vent fireplace, comprising: a flue pipe assembly including an exhaust pipe and a surrounding fresh air pipe; an interior housing forming a combustion chamber; a top wall, rear wall, bottom wall and side walls defining an exterior housing; a slanted exterior wall attached to and extending between said top and rear walls, said slanted outer wall disposed at obtuse angles relative to said top and rear walls; said combustion chamber including a slanted interior wall disposed in spaced apart parallel relationship from said slanted exterior wall; an intermediate wall disposed between said slanted inner wall and slanted exterior wall, said intermediate wall attached to said slanted exterior wall, said intermediate wall and slanted exterior wall forming a plenum in fluid communication with said combustion chamber for supplying combustion air to said combustion chamber; a first pipe member orthogonally attached to said slanted inner wall and extending through said slanted exterior wall and intermediate wall, said first pipe member in fluid communication with said combustion chamber for conveying combustion products from said combustion chamber; and a second pipe member orthogonally attached to said slanted exterior wall, said second pipe member having a diameter larger than said first pipe and disposed around said first pipe member, said first and second pipe members defining an annular space therebetween forming an air intake duct in fluid communication with said plenum.
Claim 19
Dependent Claim
228 words
A direct vent fireplace, comprising: a flue pipe assembly including an exhaust pipe and a surrounding fresh air pipe; an interior housing forming a combustion chamber; a top wall, rear wall, bottom wall and side walls defining an exterior housing; a slanted exterior wall attached to and extending between said top and rear walls, said slanted outer wall disposed at obtuse angles relative to said top and rear walls; said combustion chamber including a slanted interior wall disposed in spaced apart parallel relationship from said slanted exterior wall; an intermediate wall disposed between said slanted inner wall and slanted exterior wall, said intermediate wall attached to said slanted exterior wall, said intermediate wall and slanted exterior wall forming a plenum in fluid communication with said combustion chamber for supplying combustion air to said combustion chamber; a first pipe member orthogonally attached to said slanted inner wall and extending through said slanted exterior wall and intermediate wall, said first pipe member in fluid communication with said combustion chamber for conveying combustion products from said combustion chamber; and a second pipe member orthogonally attached to said slanted exterior wall, said second pipe member having a diameter larger than said first pipe and disposed around said first pipe member, said first and second pipe members defining an annular space therebetween forming an air intake duct in fluid communication with said plenum.
Claim 20
Dependent Claim
32 words
The fireplace of claim 14, further comprising a combustion air duct extending between and in fluid communication with said plenum and said combustion chamber for supplying combustion air to said combustion chamber.
Claim 21
Dependent Claim
265 words
A direct vent fireplace adapted for attachment to a flue pipe assembly including an exhaust pipe and a surrounding fresh air pipe, said fireplace comprising: a top wall, rear wall, bottom wall and side walls defining combustion chamber, one of said walls defining said combustion chamber including an opening therein for admittance of combustion air; a slanted flue attachment wall attached to and extending between said top and rear walls, said slanted flue attachment wall disposed at obtuse angles relative to said top and rear walls; an exterior housing disposed in spaced apart relationship from said combustion chamber, said housing having an exterior bottom wall, exterior top wall, exterior back wall, two exterior side walls, an exterior front wall defining an opening, and a slanted exterior wall attached to and extending between said exterior top wall and exterior back wall, said slanted exterior wall disposed generally parallel to said slanted flue attachment wall; a first pipe member orthogonally attached to said flue attachment wall and in fluid communication with said combustion chamber for conveying combustion products from said combustion chamber; and means forming a plenum orthogonally attached to said slanted exterior wall, said plenum having a diameter larger than said first pipe and disposed around said first pipe member, a combustion air duct connected with said plenum and in fluid communication said combustion chamber; whereby the exhaust pipe and fresh air pipe are respectively adapted to be attached to said first pipe member and said plenum and can be selectively oriented to extend away from said fireplace in either a substantially vertical or horizontal direction.
Claim 22
Dependent Claim
265 words
A direct vent fireplace adapted for attachment to a flue pipe assembly including an exhaust pipe and a surrounding fresh air pipe, said fireplace comprising: a top wall, rear wall, bottom wall and side walls defining combustion chamber, one of said walls defining said combustion chamber including an opening therein for admittance of combustion air; a slanted flue attachment wall attached to and extending between said top and rear walls, said slanted flue attachment wall disposed at obtuse angles relative to said top and rear walls; an exterior housing disposed in spaced apart relationship from said combustion chamber, said housing having an exterior bottom wall, exterior top wall, exterior back wall, two exterior side walls, an exterior front wall defining an opening, and a slanted exterior wall attached to and extending between said exterior top wall and exterior back wall, said slanted exterior wall disposed generally parallel to said slanted flue attachment wall; a first pipe member orthogonally attached to said flue attachment wall and in fluid communication with said combustion chamber for conveying combustion products from said combustion chamber; and means forming a plenum orthogonally attached to said slanted exterior wall, said plenum having a diameter larger than said first pipe and disposed around said first pipe member, a combustion air duct connected with said plenum and in fluid communication said combustion chamber; whereby the exhaust pipe and fresh air pipe are respectively adapted to be attached to said first pipe member and said plenum and can be selectively oriented to extend away from said fireplace in either a substantially vertical or horizontal direction.
References Cited (Backward Citations)
US2582066A
Cited
US2998764A
Cited
US3168088A
Cited
US3171402A
Cited
US3395693A
Cited
US3435816A
Cited
US3614948A
Cited
US3741194A
Cited
US4141336A
Cited
US4112913A
Cited
US4184473A
Cited
US4204517A
Cited
US4224921A
Cited
US4304215A
Cited
US4471755A
Cited
US4347831A
Cited
US4271815A
Cited
US4349009A
Cited
US4494525A
Cited
US4434783A
Cited
US4359040A
Cited
US4412255A
Cited
US4377153A
Cited
US4519376A
Cited
US4408594A
Cited
US4465055A
Cited
US4424792A
Cited
US4558688A
Cited
US4574773A
Cited
US4545360A
Cited
US4611572A
Cited
US4793322A
Cited
US4787365A
Cited
US4852548A
Cited
US5014684A
Cited
US4875464A
Cited
US4886047A
Cited
US4909227A
Cited
US5000162A
Cited
US5016609A
Cited
US5076254A
Cited
US5191877A
Cited
US5218953A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-06-13 | 1997-12-13 | 1998-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-06-13 | 2001-12-13 | 2002-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-06-13 | 2005-12-13 | 2006-06-14 | $7700.00 | Window Closed / Lapsed |