US4003362A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fireplace
Assignee: Individual
•
Filing: 1975-06-19
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Granted: 1977-01-18
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Expires: 1995-06-19
Abstract
Abstract A fireplace is situated in the wall of a room of a mobile home. It includes a firebox open to the interior of the room and connected to a stack outside of, and spaced from the room. Casing means surrounds the firebox and provides an outer passageway around the outside of the firebox and an inner passageway between the outer passageway and the firebox. Heat from combustion in the firebox induces air flow from outside the room through the inner passageway, around the firebox and into the room to heat the room and to supply air for further combustion. Such combustion heat also induces air flow from outside the room, through the outer passageway to outside of the structure, thereby tending to cool the exterior of fireplace.
Inventors
- 👤 Joseph H. Lener
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:24
CPC Classifications
F; F24; F24B; F24B1/00; F24B1/18; F24B1/181; F24B1/185; F24B1/188; F24B1/1885
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
342 words
A heating unit assembly for use in a closed structure having at least one upright wall provided with an opening therethrough, said heating unit assembly including a heating unit mounted in said opening and having a vertical heating unit face plate inside of said closed structure, said heating unit also including a firebox extending outwardly from said closed structure wall, said firebox being open to the interior of said closed structure through said heating unit face plate, and including a substantially horizontal upper wall, an open top stack providing a flue open to an upper portion of said firebox and extending vertically upward from said upper firebox wall to position outside of said closed structure and in spaced relation to said upright structure wall, a first casing means in surrounding, spaced relation to said firebox and in integral sealing relation to said heating unit face plate to provide an inner passageway between said firebox and said first casing means, a second casing means in surrounding, spaced relation to said first casing means and in sealing relation to said heating unit face plate to provide an outer passageway between said first and second casing means, an open top stack casing in surrounding spaced, concentric relation to the outside of said stack and open to position outside said structure, said stack casing being mounted on an upper portion of said second casing means so that the space between said stack and said stack casing is open to and forms a part of said outer passageway, there being a cooling air inlet through a bottom portion of said second casing means from outside said closed structure to said outer passageway, there being a heating air inlet conduit through said second casing means and open through a bottom portion of said first casing means from outside said closed structure to the inner passageway, and there being at least one heating air outlet provided through said heating unit face plate and opening from an upper portion of the inner passageway to the interior of said closed structure.
Claim 2
Dependent Claim
342 words
A heating unit assembly for use in a closed structure having at least one upright wall provided with an opening therethrough, said heating unit assembly including a heating unit mounted in said opening and having a vertical heating unit face plate inside of said closed structure, said heating unit also including a firebox extending outwardly from said closed structure wall, said firebox being open to the interior of said closed structure through said heating unit face plate, and including a substantially horizontal upper wall, an open top stack providing a flue open to an upper portion of said firebox and extending vertically upward from said upper firebox wall to position outside of said closed structure and in spaced relation to said upright structure wall, a first casing means in surrounding, spaced relation to said firebox and in integral sealing relation to said heating unit face plate to provide an inner passageway between said firebox and said first casing means, a second casing means in surrounding, spaced relation to said first casing means and in sealing relation to said heating unit face plate to provide an outer passageway between said first and second casing means, an open top stack casing in surrounding spaced, concentric relation to the outside of said stack and open to position outside said structure, said stack casing being mounted on an upper portion of said second casing means so that the space between said stack and said stack casing is open to and forms a part of said outer passageway, there being a cooling air inlet through a bottom portion of said second casing means from outside said closed structure to said outer passageway, there being a heating air inlet conduit through said second casing means and open through a bottom portion of said first casing means from outside said closed structure to the inner passageway, and there being at least one heating air outlet provided through said heating unit face plate and opening from an upper portion of the inner passageway to the interior of said closed structure.
Claim 3
Dependent Claim
24 words
The assembly of claim 1 wherein said first casing means includes a substantially horizontal upper wall in spaced relation to said upper firebox wall.
Claim 4
Dependent Claim
26 words
The assembly of claim 2 wherein said second casing means includes a substantially horizontal upper wall in spaced relation to said first casing means upper wall.
Claim 5
Dependent Claim
92 words
The assembly of claim 3 and an upright cooling air separation plate between said first and second casings in sealing relation to bottom and side walls of each of said casings, there being a passage provided through said cooling air separation plate between the upper first casing wall and the upper second casing wall, at least a portion of said cooling air inlet being open through said lower portion of said second casing means on a side of said cooling air separation plate opposite that to which the stack casing is open.
Claim 6
Dependent Claim
109 words
The assembly of claim 4 wherein a substantially horizontal cooling air plate is in spaced relation between the upper walls of said first and second casing means, wherein said horizontal cooling air plate is in sealing relation to vertical side wall extensions of said first casing means and said upright cooling air separation plate and terminates in spaced relation to said heating unit face plate, said upright cooling air separation plate is in sealing relation to said upper wall of said second casing means, and wherein said passage through the cooling air separation plate is between the cooling air plate and the upper wall of said first casing means.
Claim 7
Dependent Claim
83 words
The assembly of claim 1 including an outer casing flange integral with the heating unit face plate and adapted for face-to-face contact with an inside surface portion of the structure wall, a collaring means adapted for face-to-face contact with an outside surface portion of the structure wall, and fastening means engageable with the outer flange and with the collaring means whereby each of the outer casing flange and the collaring means are held in pressing contact with its associated structure wall surface portion.
Claim 8
Dependent Claim
43 words
The assembly of claim 6 wherein the collaring means includes an angle iron flange circumjacent the second casing means portion proximate to the structure wall, said angle iron flange being slidable and substantially snug fitting with respect to said second casing means portion.
Claim 9
Dependent Claim
103 words
The assembly of claim 4; a damper mounted inside of said firebox and movable between a closed position wherein said stack is entirely sealed off from the interior of the firebox and an open position wherein said damper is in clearing relation to said stack flue; a normally closed heating air valve means movable between a closed position wherein said heating air outlet is completely blocked and an open position wherein said heating air outlet is open between said inner passageway and the interior of said structure; and positive means for moving said heating air valve means between closed position and open position.
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) | 1980-01-18 | 1980-07-19 | 1981-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-18 | 1984-07-19 | 1985-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-18 | 1988-07-19 | 1989-01-18 | $7700.00 | Window Closed / Lapsed |