US4157704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fireplace stove
Assignee: Individual
•
Filing: 1977-09-13
•
Granted: 1979-06-12
•
Expires: 1997-09-13
Abstract
Abstract A stove for use in an abode and which includes an air intake system and a viewing door. The air intake system inducts air into the stove from outside the abode and includes a draft control mechanism for controlling the amount of air introduced into the stove. The viewing door includes means for slidably receiving a spark screen, a viewing window and a heat shield, which elements can be used singly or in combination, as desired. A latching mechanism on the door enables the door to be closed with varying degrees of tightness. Alternative embodiments include use of the stove in a water heating system and fans convecting air over the stove outside surfaces.
Inventors
- 👤 Ernest C. Zimmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:09
CPC Classifications
F; F24; F24B; F24B13/00; F24B13/004; F24B1/00; F24B1/02; F24B5/00; F24B5/02; F24B5/021; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/1039; Y10T292/1041; Y10T292/1043; Y10T292/1075; Y10T292/1083; Y10T292/68
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
248 words
A fireplace stove for use inside an abode comprising: a base; a frame resting on said base, said frame defining with said base a fire chamber and having defined therein an access opening; an air intake system connected to said base to infuse air into said fire chamber, said air intake system including an air intake pipe opening outside of the abode, and a draft control means on said frame for controlling the amount of air inducted into said fire chamber, said air intake system including an air intake pipe connected to said base, a draft duct fluidly connected to said air intake pipe, a draft box mounted on said base to be located in said fire chamber and fluidly connected to said air duct to receive air therefrom, said draft box having openings defined therein to introduce air into said fire chamber, a draft plate located between said draft box and said air duct, said draft plate being slidably mounted on said frame to prevent and permit a flow of air into said draft box from said air duct to control the amount of air introduced into said draft box and thereby control the amount of air introduced into said fire chamber; a viewing door on said frame for covering said fire chamber access opening, said door including supporting means for slidably receiving a spark screen, a viewing window, and a heat shield; and an exhaust system on said frame for exhausting air from said fire chamber.
Claim 2
Dependent Claim
248 words
A fireplace stove for use inside an abode comprising: a base; a frame resting on said base, said frame defining with said base a fire chamber and having defined therein an access opening; an air intake system connected to said base to infuse air into said fire chamber, said air intake system including an air intake pipe opening outside of the abode, and a draft control means on said frame for controlling the amount of air inducted into said fire chamber, said air intake system including an air intake pipe connected to said base, a draft duct fluidly connected to said air intake pipe, a draft box mounted on said base to be located in said fire chamber and fluidly connected to said air duct to receive air therefrom, said draft box having openings defined therein to introduce air into said fire chamber, a draft plate located between said draft box and said air duct, said draft plate being slidably mounted on said frame to prevent and permit a flow of air into said draft box from said air duct to control the amount of air introduced into said draft box and thereby control the amount of air introduced into said fire chamber; a viewing door on said frame for covering said fire chamber access opening, said door including supporting means for slidably receiving a spark screen, a viewing window, and a heat shield; and an exhaust system on said frame for exhausting air from said fire chamber.
Claim 3
Dependent Claim
20 words
The fireplace stove of claim 1 wherein said base includes support legs for supporting the stove above a supporting surface.
Claim 4
Dependent Claim
16 words
The fireplace stove of claim 2 wherein said air intake pipe is located beneath said stove.
Claim 5
Dependent Claim
19 words
The fireplace stove of claim 3 further including a grate assembly resting on said base in said fire chamber.
Claim 6
Dependent Claim
22 words
The fireplace stove of claim 1 wherein said draft duct is fluidly connected at one end thereof to said air intake pipe.
Claim 7
Dependent Claim
23 words
The fireplace stove of claim 1 wherein said draft plate is located at the connection of said draft box and said air duct.
Claim 8
Dependent Claim
20 words
A fireplace stove of claim 6 further including a fire liner on said base and one which said grate rests.
Claim 9
Dependent Claim
28 words
The fireplace stove of claim 6 wherein said draft box openings are positioned to introduce air near the bottom of said fire chamber and beneath said grate mechanism.
Claim 10
Dependent Claim
27 words
The fireplace stove of claim 6 further including draft plate guides on said base adjacent said draft box-air duct connection for guiding movement of said draft plate.
Claim 11
Dependent Claim
21 words
The fireplace stove of claim 1 further including a heat reflecting fire shield-plate mounted on said frame in said fire chamber.
Claim 12
Dependent Claim
12 words
The fireplace stove of claim 10 wherein said fire shield-plate is tilted.
Claim 13
Dependent Claim
34 words
The fireplace stove of claim 1 wherein said supporting means includes spaced guide rails mounted on said door to define channels for slidably receiving said spark screen, said viewing window, and said heat shield.
Claim 14
Dependent Claim
36 words
The fireplace stove of claim 12 wherein said heat shield is a single unitary plate and includes a handle on one edge thereof for grasping said heat shield to slidably move same in said guide rails.
Claim 15
Dependent Claim
33 words
The fireplace stove of claim 13 further including fire shield storage means on said frame for accommodating said unitary heat shield when said unitary heat shield is not in place in said door.
Claim 16
Dependent Claim
71 words
The fireplace stove of claim 1 further including a latching mechanism on said door and a latch plate on said frame adjacent said door, said latch plate being located in said fire chamber and having a scalloped edge, and said latching mechanism including a turn bolt rotatably mounted on said door, said turn bolt including a latch plate engaging lock bar which engages said scalloped edge for locking said door closed.
Claim 17
Dependent Claim
57 words
The fireplace stove of claim 15 wherein said scalloped edge is slanted so that said latching mechanism is closed more tightly when said turn bolt latching engaging lock bar is engaged against one portion of said scalloped edge than said latching mechanism is when said engaging lock bar is engaged against another portion of said scalloped edge.
Claim 18
Dependent Claim
35 words
The fireplace stove of claim 1 further including log roll bars secured on said door to intercept any logs which might roll out of said fire chamber before those logs move out of the stove.
Claim 19
Dependent Claim
48 words
The fireplace stove of claim 16 wherein said turn bolt further includes a hand grip portion located outside of said stove, said hand grip portion including helical coils for dissipating heat so that said handle grip portion remains tactile when there is a fire in said fire chamber.
Claim 20
Dependent Claim
47 words
The fireplace stove of claim 6 wherein said air duct is located in heat transfer connection with said fire chamber to transfer heat from said fire chamber to the air flowing in said air duct thereby pre-heating that air prior to introduction thereof into said fire chamber.
Claim 21
Dependent Claim
36 words
The fireplace stove of claim 6 further including a baffle plate mounted on said draft box so that air exhausted from said draft box impinges against said baffle during the introduction thereof into said fire chamber.
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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) | 1982-06-11 | 1982-12-11 | 1983-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-06-11 | 1986-12-11 | 1987-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-06-11 | 1990-12-11 | 1991-06-12 | $7700.00 | Window Closed / Lapsed |