US3901212A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fireplace heat extractor
Assignee: Individual
•
Filing: 1974-08-02
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Granted: 1975-08-26
•
Expires: 1994-08-02
Abstract
Abstract The disclosure is of a fireplace heat extractor comprising a generally horizontal header to be positioned across the fireplace opening. A blower directs air through the header and an array of tubular air ducts which extend downwardly and rearwardly from the header to function also as a fire basket. The ducts then extend up along the back of the fireplace and forwardly to open outward of the fireplace. A hood and fire curtain assembly is slidably carried on the protruding ends of the air ducts to be adjustably positioned against the front of the fireplace.
Inventors
- 👤 James S Stites
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:17
CPC Classifications
F; F24; F24B; F24B1/00; F24B1/18; F24B1/185; F24B1/188; F24B1/1885; F24B1/1886
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
200 words
A fireplace heat extractor comprising: a tubular, generally horizontal header adapted to be positioned within and across the lower portion of a fireplace opening; an air inlet tubular section connected at one end of said header and disposed to extend outward of a fireplace opening; a blower connected to said inlet tUbular section; the other end of said header being imperforate; an array of tubular air ducts opening from said header and extending downwardly and rearwardly therefrom to form a receptacle for fireplace fuel and then upwardly, terminating in forwardly extending top portions adapted to be directed outwardly of said fireplace opening across the upper portion thereof; outlet openings in the ends of said top portions; a horizontal curtain rod carried on at least one of said air duct top portions and extending below the array thereof adapted to span said fireplace opening; extensible legs supporting said header and air duct array for adjusting the elevation and level of said curtain rod; means for adjusting the position of said curtain rod foreand aft of said duct top portion; a fire curtain carried on said curtain rod; and an opening in said curtain through which said air inlet tubular section extends.
Claim 2
Dependent Claim
200 words
A fireplace heat extractor comprising: a tubular, generally horizontal header adapted to be positioned within and across the lower portion of a fireplace opening; an air inlet tubular section connected at one end of said header and disposed to extend outward of a fireplace opening; a blower connected to said inlet tUbular section; the other end of said header being imperforate; an array of tubular air ducts opening from said header and extending downwardly and rearwardly therefrom to form a receptacle for fireplace fuel and then upwardly, terminating in forwardly extending top portions adapted to be directed outwardly of said fireplace opening across the upper portion thereof; outlet openings in the ends of said top portions; a horizontal curtain rod carried on at least one of said air duct top portions and extending below the array thereof adapted to span said fireplace opening; extensible legs supporting said header and air duct array for adjusting the elevation and level of said curtain rod; means for adjusting the position of said curtain rod foreand aft of said duct top portion; a fire curtain carried on said curtain rod; and an opening in said curtain through which said air inlet tubular section extends.
Claim 3
Dependent Claim
55 words
The fireplace heat extractor defined by Claim 1 including: a hood supporting said curtain rod and slidably carried on said air duct top portions, whereby, said means for adjusting the position of the curtain rod and said extensible legs may be employed jointly to position the hood snugly against the fireplace across the opening thereof.
Claim 4
Dependent Claim
27 words
The fireplace heat extractor defined by claim 1 wherein: the total flow capacity of said array of air ducts is slightly greater than that of said header.
Claim 5
Dependent Claim
173 words
A fireplace heat extractor comprising: a tubular, generally horizontal header adapted to be positioned within and across the lower portion of a fireplace opening; an air inlet tubular section connected at one end of said header and disposed to extend outward of a fireplace opening; a blower connected to said inlet tubular section; the other end of said header being imperforate; an array of tubular air ducts opening from said header and extending downwardly and rearwardly therefrom to form a receptacle for fireplace fuel, and then upwardly, terminating in forwardly extending top portions adapted to be directed outwardly of said fireplace opening across the upper portion thereof; outlet openings in the ends of said top portions; a horizontal hood slidably carried on at least one of said air duct top portions and adapted to span said fireplace opening; means for adjusting the position of said hood fore and aft of said duct top portion; and extensible legs supporting said header and air duct array for adjusting the elevation and level of said hood.
Claim 6
Dependent Claim
173 words
A fireplace heat extractor comprising: a tubular, generally horizontal header adapted to be positioned within and across the lower portion of a fireplace opening; an air inlet tubular section connected at one end of said header and disposed to extend outward of a fireplace opening; a blower connected to said inlet tubular section; the other end of said header being imperforate; an array of tubular air ducts opening from said header and extending downwardly and rearwardly therefrom to form a receptacle for fireplace fuel, and then upwardly, terminating in forwardly extending top portions adapted to be directed outwardly of said fireplace opening across the upper portion thereof; outlet openings in the ends of said top portions; a horizontal hood slidably carried on at least one of said air duct top portions and adapted to span said fireplace opening; means for adjusting the position of said hood fore and aft of said duct top portion; and extensible legs supporting said header and air duct array for adjusting the elevation and level of said hood.
References Cited (Backward Citations)
US1747259A
Cited
US2161723A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |