US4329930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Draft air deflecting device
Assignee: ALPIN MANUFACTURING COMPANY INC
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Filing: 1980-08-06
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Granted: 1982-05-18
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Expires: 2000-08-06
Abstract
Abstract A draft air deflecting device is mountable proximate to a window contained in a firebox and serves as a conduit which directs draft air across the inner surface of the window prior to its supporting combustion of the fuel in the firebox. In this respect, the draft air deflecting device is formed as a box which communicates with draft air holes located in the firebox and which includes a forwardly extending lip serving to define a nozzle for both increasing the velocity and directing the incoming draft air across the firebox window. The incoming draft air is thus utilized to cool and to prevent soot, creosote and other particulates from accumulating on the window.
Inventors
- 👤 James E. Riley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:44
CPC Classifications
F; F23; F23M; F23M11/00; F23M11/04; F23M11/042; F23L; F23L15/00; Y; Y02; Y02E; Y02E20/00; Y02E20/34
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
171 words
A draft air deflecting device for use in combination with a firebox having a window therein, said draft air deflecting device comprising: air chamber means for collecting a supply of draft air therein being ultimately suppliable to a combustion process occurring in said firebox; nozzle means for directing said supply of draft air from said air chamber means across an interior surface of said window thereby to cool and clean said window prior to use of said draft air in said combustion process; and at least one draft air inlet aperture communicating with said air chamber means whereby draft air may be directed from an exterior area into said air chamber means for collection therein, said air chamber means being essentially a box-like structure in sealing engagement with said interior portion of said firebox and said nozzle means being fixedly attached to said box-like structure and contoured as a forwardly extending lip having an open portion through which said draft air is directed upon being emitted from said air chamber means.
Claim 2
Dependent Claim
171 words
A draft air deflecting device for use in combination with a firebox having a window therein, said draft air deflecting device comprising: air chamber means for collecting a supply of draft air therein being ultimately suppliable to a combustion process occurring in said firebox; nozzle means for directing said supply of draft air from said air chamber means across an interior surface of said window thereby to cool and clean said window prior to use of said draft air in said combustion process; and at least one draft air inlet aperture communicating with said air chamber means whereby draft air may be directed from an exterior area into said air chamber means for collection therein, said air chamber means being essentially a box-like structure in sealing engagement with said interior portion of said firebox and said nozzle means being fixedly attached to said box-like structure and contoured as a forwardly extending lip having an open portion through which said draft air is directed upon being emitted from said air chamber means.
Claim 3
Dependent Claim
52 words
The draft air deflecting device as defined in claim 1, wherein said air chamber means is mounted on an interior portion of said firebox and is located proximate to said window, said nozzle means being directed toward said window thereby to direct said draft air across said interior surface of said window.
Claim 4
Dependent Claim
24 words
The draft air deflecting device as defined in claim 1, wherein said at least one aperture is positioned in a door on said firebox.
Claim 5
Dependent Claim
56 words
The draft air deflecting device as defined in claim 1, wherein said window is recessed within said firebox thereby to define a recessed area communicating with said nozzle means so as to retard the flow of draft air being emitted through said nozzle means in a manner which enhances a cooling and cleaning of said window.
Claim 6
Dependent Claim
45 words
The draft air deflecting device as defined in claim 1, wherein said forward extending lip defining said nozzle means extends across an entire length of said window to thereby provide a uniform and even flow of draft air across said interior surface of said window.
Claim 7
Dependent Claim
40 words
The draft air deflecting device as defined in claim 1, wherein the amount of draft air suppliable to said air chamber means is controllable through the use of a draft air control knob associated with said at least one aperture.
Claim 8
Dependent Claim
43 words
The draft air deflecting device as defined in claim 1, wherein said air chamber means is mounted on an interior wall of said firebox and is located proximate to said window, said nozzle means directing air toward an entire surface of said window.
Claim 9
Dependent Claim
24 words
The draft air deflecting device as defined in claim 1, wherein said at least one aperture is positioned in a wall of said firebox.
Claim 10
Dependent Claim
24 words
The draft air deflecting device as defined in claim 1, wherein said window is recessed within said firebox for communicating with said nozzle means.
Claim 11
Dependent Claim
48 words
The draft air deflecting device as defined in claim 1, wherein said forward extending lip is mounted within a door and extends across an entire length of said window thereof to thereby provide a uniform and even flow of draft air across said interior surface of said window.
Claim 12
Dependent Claim
28 words
The draft air deflecting device as defined in claim 1, wherein a draft air control knob associated with said at least one aperture controls flow of draft air.
Claim 13
Dependent Claim
140 words
A draft air deflecting device for use in combination with a firebox having a window therein together with at least one draft air inlet aperture comprising: a box-like structure means having essentially an open side thereof for engaging in substantial sealing relation with an interior portion of said firebox and forming an air chamber for collecting a supply of draft air received from at least one draft air inlet aperture communicating with an exterior area; and nozzle means fixedly attached to said box-like structure and contoured as a forwardly extending lip about an open portion of the nozzle means for directing said supply of draft air from said air chamber across an interior surface of said window thereby to cool and clean said window prior to said draft air being ultimately used in a combustion process occurring in said firebox.
Claim 14
Dependent Claim
140 words
A draft air deflecting device for use in combination with a firebox having a window therein together with at least one draft air inlet aperture comprising: a box-like structure means having essentially an open side thereof for engaging in substantial sealing relation with an interior portion of said firebox and forming an air chamber for collecting a supply of draft air received from at least one draft air inlet aperture communicating with an exterior area; and nozzle means fixedly attached to said box-like structure and contoured as a forwardly extending lip about an open portion of the nozzle means for directing said supply of draft air from said air chamber across an interior surface of said window thereby to cool and clean said window prior to said draft air being ultimately used in a combustion process occurring in said firebox.
Claim 15
Dependent Claim
131 words
A process for cleaning and cooling a window positioned within a door of a firebox, said process including the steps of: intercepting a supply of draft air being provided from a source external of said firebox through at least one draft air inlet aperture and being utilizable to support a combustion process occurring within said firebox; collecting said intercepted supply of draft air within an air chamber means; directing said collected supply of draft air through a fixedly attached nozzle means so as to increase the velocity thereof; and further directing said collected air through said nozzle means including a forwardly extending lip and then across a surface of said window whereby said draft air serves to cool said window and also serves to remove soot, cresote and other particulates therefrom.
Claim 16
Dependent Claim
131 words
A process for cleaning and cooling a window positioned within a door of a firebox, said process including the steps of: intercepting a supply of draft air being provided from a source external of said firebox through at least one draft air inlet aperture and being utilizable to support a combustion process occurring within said firebox; collecting said intercepted supply of draft air within an air chamber means; directing said collected supply of draft air through a fixedly attached nozzle means so as to increase the velocity thereof; and further directing said collected air through said nozzle means including a forwardly extending lip and then across a surface of said window whereby said draft air serves to cool said window and also serves to remove soot, cresote and other particulates therefrom.
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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) | 1985-05-17 | 1985-11-16 | 1986-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-17 | 1989-11-16 | 1990-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-17 | 1993-11-16 | 1994-05-18 | $7700.00 | Window Closed / Lapsed |