US4112913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Free standing heating unit
Assignee: HEARTH TECHNOLOGIES Inc
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Filing: 1977-03-15
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Granted: 1978-09-12
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Expires: 1997-03-15
Abstract
Abstract A free standing heating unit is provided with a central forge draft intake and a circumferential edge draft intake in a firebox chamber. The central forge draft intake is provided in the center of the firebox chamber floor means and the circumferential edge draft intake is provided between the bottom of the radiant panels which form the sides of the firebox chamber and the top surface of firebox chamber floor means.
Inventors
- 👤 Ronald J. Shimek
- 👤 Daniel C. Shimek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:24
CPC Classifications
F; F24; F24B; F24B1/00; F24B1/18; F24B1/181
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
172 words
A free standing heating unit comprising: base support means having a draft inlet therein, a firebox chamber mounted on said base support means and having; a substantially annular ring shaped floor means mounted on said base support means forming the floor of said firebox chamber, an apertured grate mounted on said ring shaped floor means providing a central forge draft intake therethrough, an outer vertical ring shaped deflector plate mounted on said ring shaped floor means, a plurality of vertical columns mounted at the outer circumference of said floor means, dome means mounted on said vertical columns forming the top and the outlet of said firebox chamber, radiant panels mounted between adjacent vertical columns forming the sides of said firebox chamber, and means supporting said radiant panels and for providing a horizontal space between the bottom of said radiant panels and said annular ring shaped floor means, whereby there is provided a horizontal edge draft intake through said space which confines the fire and smoke to the center of said firebox chamber.
Claim 2
Dependent Claim
172 words
A free standing heating unit comprising: base support means having a draft inlet therein, a firebox chamber mounted on said base support means and having; a substantially annular ring shaped floor means mounted on said base support means forming the floor of said firebox chamber, an apertured grate mounted on said ring shaped floor means providing a central forge draft intake therethrough, an outer vertical ring shaped deflector plate mounted on said ring shaped floor means, a plurality of vertical columns mounted at the outer circumference of said floor means, dome means mounted on said vertical columns forming the top and the outlet of said firebox chamber, radiant panels mounted between adjacent vertical columns forming the sides of said firebox chamber, and means supporting said radiant panels and for providing a horizontal space between the bottom of said radiant panels and said annular ring shaped floor means, whereby there is provided a horizontal edge draft intake through said space which confines the fire and smoke to the center of said firebox chamber.
Claim 3
Dependent Claim
42 words
A free standing heating unit as set forth in claim 1 wherein said dome means comprises a truncated cone shaped exhaust hood, and an annular base ring extending radially inward from the base of said truncated cone mounted on said vertical columns.
Claim 4
Dependent Claim
57 words
A free standing heating unit as set forth in claim 1 wherein said outer vertical ring shaped deflector plate is positioned inside and opposite the bottom portion of said radiant panels and is higher in the vertical direction than said space at the bottom of said radiant panels thereby providing a vertical edge draft intake path therebetween.
Claim 5
Dependent Claim
24 words
A free standing heating unit as set forth in claim 1 wherein said radiant panels comprise panes of fireproof glass which float on springs.
Claim 6
Dependent Claim
60 words
A free standing heating unit as set forth in claim 4 which further includes top brackets for keeping the top edge of some of said radiant panels from moving radially outward away from said vertical columns, and said vertical columns are provided with vertical and horizontal webs for maintaining the vertical edges of said radiant panels in a fixed position.
Claim 7
Dependent Claim
54 words
A free standing heating unit as set forth in claim 1 wherein said vertical columns comprise T-shaped structural members having vertical webs of the T pointing radially outward, and having horizontal webs normal thereto, and wherein some of said radiant panels consist of fireproof glass mounted against the horizontal webs of said T-shaped members.
Claim 8
Dependent Claim
40 words
A free standing heating unit as set forth in claim 6 which further includes top brackets mounted on said dome means for urging the sides of said fireproof glass panels into engagement with the horizontal webs of said T-shaped members.
Claim 9
Dependent Claim
76 words
A free standing heating unit as set forth in claim 7 wherein said means for supporting said fireproof glass radiant panels comprise channel shaped blocks having resilient means in the bottom of the channels for urging the top edge of said fireproof glass panels into engagement with said dome means and for supporting said bottom edge of said fireproof glass above said floor means, whereby said fireproof glass panels are easily removable for cleaning or replacement.
Claim 10
Dependent Claim
42 words
A free standing heating unit as set forth in claim 1 wherein said means for supporting said radiant panels comprise spring means urging said radiant panels into engagement with said dome means and for supporting said radiant panels above said floor means.
Claim 11
Dependent Claim
33 words
A free standing heating unit as set forth in claim 9 wherein at least one of said radiant panels comprise a door mounted on a vertical pivot between a pair of adjacent columns.
Claim 12
Dependent Claim
40 words
A free standing heating unit as set forth in claim 1 wherein said substantially annular ring shaped floor means comprises an annular plate mounted on said base support means and an annular refractory heat sink mounted on said annular plate.
Claim 13
Dependent Claim
43 words
A free standing heating unit as set forth in claim 1 wherein said draft inlet in said base support means comprises a slot in the side of said base support means, and draft inlet control means comprising an adjustable closure juxtaposed said slot.
Claim 14
Dependent Claim
51 words
A free standing heating unit as set forth in claim 12 which further includes an ash tray supported in said base support means directly below said aperatured grate, said ash tray being of a size and shape to be removable through said slot in the side of said base support means.
Claim 15
Dependent Claim
23 words
A free standing heating unit as set forth in claim 1 wherein some of said radiant panels comprise removable fire proof glass panels.
Claim 16
Dependent Claim
44 words
A free standing heating unit as set forth in claim 14 wherein at least one of said removable fire proof glass panels comprise a hinged door having a spring support and friction closure means for maintaining said door in a closed position during operation.
Claim 17
Dependent Claim
27 words
A free standing heating unit as set forth in claim 15 wherein said removable fire proof glass panels consist of unframed glass panels supported on resilient keepers.
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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) | 1981-09-11 | 1982-03-13 | 1982-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-11 | 1986-03-13 | 1986-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-11 | 1990-03-13 | 1990-09-12 | $7700.00 | Window Closed / Lapsed |