US4008705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Freestanding-fireplace and stove heat shield
Assignee: Individual
•
Filing: 1975-06-17
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Granted: 1977-02-22
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Expires: 1995-06-17
Abstract
Abstract A heat shield for use with freestanding fuel-burning stoves, furnaces, fireplaces and the like, in the form of a modular panel assembly for securance over a wall in spaced relation to said freestanding unit; parallel-spaced, large area, anti-buckling specially-contoured partitions behind the front face of the panel assembly define plural vertical passages layered over the wall for air entering at an intake at the bottom and exiting at an exhaust at the top; louvers at the intake and exhaust align with the respective plural air passages and co-act with the interior partition structure of the invention to produce a sharp thermal gradiant between the front face and any wall protected from a source of heat by the invention, the front face of the panel assembly being hottest, and successive interior partitions and the wall protected being successively cooler as result of convective cooling combined with radiative shielding; special slot and attachment structure further prevents buckling from thermal expansion.
Inventors
- 👤 James H. Robertson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:28
CPC Classifications
F; F24; F24B; F24B1/00; F24B1/18; F24B1/185; F24B1/188; F24B13/00; F24B13/002
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
182 words
A stove and fireplace shield for installation over a building structure vertical wall or the like in spaced relation with a freestanding stove or fireplace or the like comprising: a face panel having an intake aperture therein at the bottom and an exit aperture therein spaced downward from the top, a plurality of metallic core panels, covered by the face panel means for holding the face panel in proximate parallel-spaced relation to a said vertical wall with the plurality of core panels in proximate generally parallel-spaced relation therebetween forming a panel assembly with a plurality of vertical air passages layered over said wall and leading from proximate the intake aperture to the exit aperture: means for closing the ends of said panel assembly, a top cap for closing the top of said panel assembly, all said plurality of core panels being laterally corrugated, the corrugations in all said core panel substantially corresponding in lateral location, and the intake aperture and the exit aperture respectively having a plurality of louvres, each louvre being angled substantially in alignment with a respective vertical air passage.
Claim 2
Dependent Claim
182 words
A stove and fireplace shield for installation over a building structure vertical wall or the like in spaced relation with a freestanding stove or fireplace or the like comprising: a face panel having an intake aperture therein at the bottom and an exit aperture therein spaced downward from the top, a plurality of metallic core panels, covered by the face panel means for holding the face panel in proximate parallel-spaced relation to a said vertical wall with the plurality of core panels in proximate generally parallel-spaced relation therebetween forming a panel assembly with a plurality of vertical air passages layered over said wall and leading from proximate the intake aperture to the exit aperture: means for closing the ends of said panel assembly, a top cap for closing the top of said panel assembly, all said plurality of core panels being laterally corrugated, the corrugations in all said core panel substantially corresponding in lateral location, and the intake aperture and the exit aperture respectively having a plurality of louvres, each louvre being angled substantially in alignment with a respective vertical air passage.
Claim 3
Dependent Claim
202 words
A stove and fireplace shield for installation over a building structure vertical wall or the like in spaced relation with a freestanding stove or fireplace or the like comprising: a face panel having an intake aperture therein at the bottom and an exit aperture therein at the top, a plurality of metallic core panels, all said plurality of core panels being laterally corrugated, the corrugations in all said core panel substantially corresponding in lateral location, means for holding the face panel in parallel-spaced relation to a said vertical wall with the plurality of core panels in generally parallel-spaced relation therebetween forming a panel assembly with a plurality of vertical air passages layered over said wall and leading from proximate the intake aperture to the exit aperture said means for holding including a plurality of tie bars tangent to said corrugations, at least one of said tie bars having means for attachment on one side to a corrugation ridge of a first core panel and on a second side to a corrugation ridge of a second core panel, at least one end cap for closing an end of said panel assembly, and a top cap for closing the top of said panel assembly.
Claim 4
Dependent Claim
202 words
A stove and fireplace shield for installation over a building structure vertical wall or the like in spaced relation with a freestanding stove or fireplace or the like comprising: a face panel having an intake aperture therein at the bottom and an exit aperture therein at the top, a plurality of metallic core panels, all said plurality of core panels being laterally corrugated, the corrugations in all said core panel substantially corresponding in lateral location, means for holding the face panel in parallel-spaced relation to a said vertical wall with the plurality of core panels in generally parallel-spaced relation therebetween forming a panel assembly with a plurality of vertical air passages layered over said wall and leading from proximate the intake aperture to the exit aperture said means for holding including a plurality of tie bars tangent to said corrugations, at least one of said tie bars having means for attachment on one side to a corrugation ridge of a first core panel and on a second side to a corrugation ridge of a second core panel, at least one end cap for closing an end of said panel assembly, and a top cap for closing the top of said panel assembly.
Claim 5
Dependent Claim
17 words
A stove and fireplace shield as recited in claim 2, the locations of attachment being laterally spaced.
Claim 6
Dependent Claim
32 words
A stove and fireplace shield as recited in claim 3, said means for attachment including a slotted hole through one of said core panels, and a member slidably engaging said slotted hole.
Claim 7
Dependent Claim
36 words
A stove fireplace shield as recited in claim 4, said core panel having the slotted hole comprising overlapping upper and lower panel portions, and said slotted hole being vertically slotted and passing through said overlapping portions.
Claim 8
Dependent Claim
41 words
A stove and fireplace shield as recited in claim 3, the exit aperture having a plurality of louvres, and a deflector upwardly and outwardly sloped in alignment with louvres of the exit aperture at the upper end of said air passages.
Claim 9
Dependent Claim
43 words
A stove and fireplace shield as recited in claim 3, and an asbestos board substantially coextensive with the face panel in size and shape, said asbestos board located between the face panel and the metallic core panel next adjacent to the face panel.
Claim 10
Dependent Claim
32 words
A stove and fireplace shield as recited in claim 7, said at least one end cap having a pair of inwardly turned spaced flanges supportively engaging an edge of said asbestos board.
Claim 11
Dependent Claim
53 words
A stove and fireplace shield as recited in claim 7, wherein the asbestos board has a plurality of anti-buckling slots therethrough in the pattern of a rectangular grid of straight-line slots, the ends of the slots in each direction perpendicular to and spaced from the midpoints of the slots in the other direction.
Claim 12
Dependent Claim
23 words
A stove and fireplace shield as recited in claim 7, said face panel being of ceramic construction and affixed to the asbestos board.
Claim 13
Dependent Claim
37 words
A stove and fireplace shield as recited in claim 2, said means for holding including at least one bracket mounted on a said building structure vertical wall and engaging a said tie-bar slidably in a horizontal direction.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-02-22 | 1980-08-23 | 1981-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-22 | 1984-08-23 | 1985-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-22 | 1988-08-23 | 1989-02-22 | $7700.00 | Window Closed / Lapsed |