US4147153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fireplace air circulation and draft control
Assignee: BUCK STOVE Corp A CORP OF
•
Filing: 1977-08-26
•
Granted: 1979-04-03
•
Expires: 1997-08-26
Abstract
Abstract A free-standing unit for heating air in a U-shaped channel surrounding a fire box having a pair of spaced vertical vents for directing the heated forced air to converge in front of the fire box opening to limit air flow towards said openings. Mesh in the vertical vents directs the forced air downward to be combined with the hot forced air from a bottom horizontal vent. A baffle plate depending from the top of the fire-box adjacent the flue port and an opening along the top of the doors ignite the gases adjacent the top and directs some gases back into the fire. By forcing heated air at a low level and drawing cool air from a high level, the air being heated is of a uniform temperature. A hood extending along the top edge of the fire box opening diverts exiting gases back into the fire box. A thermostatically controlled blower creates the forced air and cools the fire box walls.
Inventors
- 👤 Carrol E. Buckner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:41
CPC Classifications
F; F24; F24F; F24F5/00; F24B; F24B1/00; F24B1/18; F24B1/185; F24B1/188; F24B1/1885; F24B7/00; F24B7/02; F24B7/025; F24H; F24H3/00; F24H3/02; F24H3/06; F24H3/067
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
117 words
In a fireplace having a fire box with an opening in a front wall and, forced air channels along the two side walls with a pair of vents on the front wall adjacent said opening, and means for forceably introducing air into said forced air channels, the improvement comprising: said vents being elongated vertical vents extending along a substantial portion of the length of said opening; and first means cooperating with said vertical vents for directing the air exiting said vents to converge in front of said opening; and said air introducing means drawing air from a volume in front of the fireplace exterior the volume defined in front of said opening by said convergent exiting air.
Claim 2
Dependent Claim
117 words
In a fireplace having a fire box with an opening in a front wall and, forced air channels along the two side walls with a pair of vents on the front wall adjacent said opening, and means for forceably introducing air into said forced air channels, the improvement comprising: said vents being elongated vertical vents extending along a substantial portion of the length of said opening; and first means cooperating with said vertical vents for directing the air exiting said vents to converge in front of said opening; and said air introducing means drawing air from a volume in front of the fireplace exterior the volume defined in front of said opening by said convergent exiting air.
Claim 3
Dependent Claim
29 words
The fireplace according to claim 1 including a forced air channel along the bottom of the fire box with a horizontal vent in said front wall below said opening.
Claim 4
Dependent Claim
19 words
The fireplace according to claim 2 including second means cooperating with said vertical vents for directing exiting air downward.
Claim 5
Dependent Claim
18 words
The fireplace according to claim 3 wherein said vertical vents terminate short of the bottom of said opening.
Claim 6
Dependent Claim
20 words
The fireplace according to claim 1 wherein said first means includes a vertical baffle plate interior said forced air channel.
Claim 7
Dependent Claim
47 words
The fireplace according to claim 1 wherein said vent is offset from the exterior side wall of said forced air channel and said first means includes a pneumatic deflection plane formed in said air channel between the side wall and the adjacent portion of the front wall.
Claim 8
Dependent Claim
23 words
The fireplace according to claim 6 wherein said exterior side wall forms an angle with said front wall of less than ninety degrees.
Claim 9
Dependent Claim
36 words
The fireplace according to claim 6 wherein said first means further includes a vertical L-shaped lip exterior to and having a portion extending across said vertical vent to produce a pneumatic deflection plane exterior said vent.
Claim 10
Dependent Claim
19 words
The fireplace according to claim 1 including a second means in said vertical vents for directing exiting air down.
Claim 11
Dependent Claim
29 words
The fireplace according to claim 9 wherein said second means includes a mesh extending across said vent having a plurality of substantially horizontal portions inclined relative to the horizontal.
Claim 12
Dependent Claim
40 words
The fireplace according to claim 1 wherein said first means includes an open mesh extending across said vent having a plurality of substantially vertical portions inclined relative to the plane of the vent for directing said exiting air to converge.
Claim 13
Dependent Claim
43 words
The fireplace according to claim 1 wherein said first means includes a vertical lip extending across the vent opening at the outermost lateral edge of said vent opening and includes a pneumatic deflection plane formed between the air channel and said vertical lip.
Claim 14
Dependent Claim
100 words
A fireplace comprising: a fire box having an opening in a front wall; a forced air channel surrounding the back, two sides, and bottom of said fire box; an elongated vertical vent in each of the side portions of said forced air channel adjacent said opening and an elongated horizontal vent in the bottom portion of said forced air channel adjacent said opening; means for forcibly introducing air into the forced air channel to exit all of said vents; and means cooperating with said vertical vents for directing the exiting air downward and inward converging in front of said opening.
Claim 15
Dependent Claim
100 words
A fireplace comprising: a fire box having an opening in a front wall; a forced air channel surrounding the back, two sides, and bottom of said fire box; an elongated vertical vent in each of the side portions of said forced air channel adjacent said opening and an elongated horizontal vent in the bottom portion of said forced air channel adjacent said opening; means for forcibly introducing air into the forced air channel to exit all of said vents; and means cooperating with said vertical vents for directing the exiting air downward and inward converging in front of said opening.
Claim 16
Dependent Claim
49 words
The fireplace according to claim 13 wherein said vertical vent is spaced from the exterior vertical wall of said forced air chamber and said directing means includes an accumulation of air between said exterior side wall, said front wall and said vent for directing said exit air to converge.
Claim 17
Dependent Claim
48 words
The fireplace according to claim 14 wherein said directing means includes an L-shaped vertical lip mounted to the exterior of said front wall extending across a portion of said vertical vent to accumulate air between the front wall and the lip for directing said exit air to converge.
Claim 18
Dependent Claim
22 words
The fireplace according to claim 14 wherein said exterior vertical wall forms an angle with said front wall less than ninety degrees.
Claim 19
Dependent Claim
26 words
The fireplace according to claim 13 wherein said directing means includes a vertical plate interior said forced air channel for directing said exit air to converge.
Claim 20
Dependent Claim
40 words
The fireplace according to claim 13 including a vertical lip mounted to the exterior of said front wall extending across the outermost lateral edge of said vertical vent and said directing means includes an accumulation of air behind said lip.
Claim 21
Dependent Claim
24 words
The fireplace according to claim 13 wherein said directing means includes second means extending across said vertical vents for directing said exiting air downward.
Claim 22
Dependent Claim
29 words
The fireplace according to claim 19 wherein said second means includes a mesh extending across said vent having substantially horizontal portion inclined relative to the plane of the vent.
Claim 23
Dependent Claim
40 words
The fireplace according to claim 13 wherein said directing means includes an open mesh extending across said vertical vents having a plurality of vertical surfaces inclined relative to the plane of the vent for directing said exiting air to converge.
Claim 24
Dependent Claim
25 words
The fireplace according to claim 1 wherein said first means cause convergence as close as possible to said opening without drawing gases from said opening.
Claim 25
Dependent Claim
25 words
The fireplace according to claim 13 wherein said directing means cause convergence as close as possible to said opening without drawing gases from said opening.
Claim 26
Dependent Claim
22 words
The fireplace according to claim 2 including a horizontal plate extending from said front wall separating said opening and said horizontal vent.
Claim 27
Dependent Claim
22 words
The fireplace according to claim 13 including a horizontal plate extending from said front wall separating said opening and said horizontal vent.
Claim 28
Dependent Claim
143 words
A free-standing forced air heater comprising: a fire box; forced air channel along the exterior of at least the back of said firebox; inlet means in the rear portion of said forced air channel spaced from the bottom of said firebox for receiving air from above and around the heater; outlet means in the front of said forced air channel for providing forced hot air adjacent the bottom front of said heater; blower means for drawing air into the inlet from the top and sides of the room in which the heater is placed, and exiting said outlet along the floor of said room to uniformly mix the air temperature in said room; said forced air channel including a portion along each side of said firebox and said outlet means including two vents on each side of said firebox directing forced air downward.
Claim 29
Dependent Claim
143 words
A free-standing forced air heater comprising: a fire box; forced air channel along the exterior of at least the back of said firebox; inlet means in the rear portion of said forced air channel spaced from the bottom of said firebox for receiving air from above and around the heater; outlet means in the front of said forced air channel for providing forced hot air adjacent the bottom front of said heater; blower means for drawing air into the inlet from the top and sides of the room in which the heater is placed, and exiting said outlet along the floor of said room to uniformly mix the air temperature in said room; said forced air channel including a portion along each side of said firebox and said outlet means including two vents on each side of said firebox directing forced air downward.
Claim 30
Dependent Claim
30 words
The fireplace according to claim 26 wherein said forced air channel includes a portion along the bottom of said firebox and said outlet means includes a vent below said firebox.
Claim 31
Dependent Claim
22 words
The free-standing forced air heater according to claim 26 including second means cooperating with said vertical vents for directing exiting air downward.
Claim 32
Dependent Claim
38 words
The free-standing forced air heater according to claim 26 wherein said inlet means is in the back wall portion of said forced air channel and said blower means is mounted to said rear wall portion behind said firebox.
Claim 33
Dependent Claim
27 words
The heater according to claim 27 wherein said air introducing means draws air from in front of said unit exterior of the area defined by said vents.
Claim 34
Dependent Claim
52 words
The heater according to claim 27 wherein said fire box includes an opening in a front wall for providing access, and said vents in said front wall are adjacent the sides of said opening to surround the substantial portions of said sides and bottom of said access opening with exiting forced air.
Claim 35
Dependent Claim
25 words
The heater according to claim 31 including a horizontal plate extending from said front wall separating said opening and vent in said bottom air channel.
Claim 36
Dependent Claim
34 words
The heater according to claim 27 wherein said back air channel is interconnected to said two sides and bottom air channel and said bottom air channel is interconnected to said two side air channel.
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) | 1982-04-02 | 1982-10-02 | 1983-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-02 | 1986-10-02 | 1987-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-02 | 1990-10-02 | 1991-04-03 | $7700.00 | Window Closed / Lapsed |