US4007726A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Forced air assembly for space heater
Assignee: Martin Industries Inc
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Filing: 1976-02-11
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Granted: 1977-02-15
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Expires: 1996-02-11
Abstract
Abstract A forced air assembly for attachment to an otherwise unjacketed space heater consisting of a fan or blower centrally mounted in a relatively thin (height compared with width) channel, the channel being adapted to wrap around varying contours of stoves by virtue of a series of cut-out regions in side walls of the channel. Air is forced through the channel, heated, and flows out of the ends of the channel.
Inventors
- 👤 Thomas F. Kenchel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:24
CPC Classifications
F; F24; F24H; F24H9/00; F24H9/0052; F24B; F24B7/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
125 words
A forced air assembly for a space heater comprising: an elongated channel having open ends, a top region, and spaced serrated side regions, whereby said channel may be selectively deformed to conform, and be attached to, the curved side wall of a space heater; a cylindrical housing, open at both ends, attached to and extending outwardly normal to said top region of said channel, and forming with an opening in said top region an air passageway through said channel; a fan mounted in said housing and oriented to blow air into said channel, which air then passes through said channel and out the ends of the channel when mounted on a said space heater; and means for attaching said channel to a said space heater.
Claim 2
Dependent Claim
125 words
A forced air assembly for a space heater comprising: an elongated channel having open ends, a top region, and spaced serrated side regions, whereby said channel may be selectively deformed to conform, and be attached to, the curved side wall of a space heater; a cylindrical housing, open at both ends, attached to and extending outwardly normal to said top region of said channel, and forming with an opening in said top region an air passageway through said channel; a fan mounted in said housing and oriented to blow air into said channel, which air then passes through said channel and out the ends of the channel when mounted on a said space heater; and means for attaching said channel to a said space heater.
Claim 3
Dependent Claim
75 words
A forced air assembly as set forth in claim 1 further comprising a heat shield comprising a plate positioned between said fan and the bottom of said channel where it would engage a space heater, said shield being positioned and configured to permit the passage of air over the top surface of said shield and into said channel while blocking direct heat radiation from a said space heater into said housing and onto said fan.
Claim 4
Dependent Claim
61 words
A forced air assembly as set forth in claim 2 wherein said side regions of said channel have turned-out end regions, and said means for attaching said channel to a said space heater comprises first and second elongated straps, each strap being adapted to close over a said turned-out region, and means for attaching said straps to a said space heater.
Claim 5
Dependent Claim
42 words
A forced air assembly as set forth in claim 3 wherein an outer end region of said cylindrical housing comprises a screen, said fan comprises a fan blade and a motor driving said blade, and said motor is attached to said screen.
Claim 6
Dependent Claim
27 words
A forced air assembly as set forth in claim 4 wherein the width of said channel is of a greater dimension than the height of said channel.
Claim 7
Dependent Claim
42 words
A forced air assembly as set forth in claim 5 wherein the length of said channel is 20 to 30 inches, the height of said channel is 1 to 3 inches, and the width of said channel is 6 to 10 inches.
References Cited (Backward Citations)
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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) | 1980-02-15 | 1980-08-16 | 1981-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-15 | 1984-08-16 | 1985-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-15 | 1988-08-16 | 1989-02-15 | $7700.00 | Window Closed / Lapsed |