Patent US4803933A successfully refreshed from Google Patents.
US4803933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory brick having an increased insulating value
Assignee: Indresco Inc
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Filing: 1984-10-30
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Granted: 1989-02-14
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Expires: 2004-10-30
Abstract
Abstract A refractory brick includes at least one insulation insert located on the cold face of the brick. Heat reflective means is provided on the surface of the insert disposed parallel to the cold face of the brick to reduce the amount of heat radiated through the insert.
Inventors
- 👤 Loucius Carey, Jr.
- 👤 Leigh F. Brooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:21
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/0003; F27D1/0033; F23; F23M; F23M5/00; F23M5/02; F27D1/04; F27D1/06; F27D1/08
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
76 words
In a refractory brick having a recessed cold face and including at least one insulation insert located on the recessed cold face of the brick, the improvement comprising: heat reflective means provided on a surface of the insert disposed parallel to the cold face of the brick to reduce the amount of heat radiated through this region of the brick; wherein the heat reflective means is aluminum foil disposed on the cold surface of the insert.
Claim 2
Dependent Claim
76 words
In a refractory brick having a recessed cold face and including at least one insulation insert located on the recessed cold face of the brick, the improvement comprising: heat reflective means provided on a surface of the insert disposed parallel to the cold face of the brick to reduce the amount of heat radiated through this region of the brick; wherein the heat reflective means is aluminum foil disposed on the cold surface of the insert.
Claim 3
Dependent Claim
32 words
In a refractory brick in accordance with claim 1 wherein the heat reflective means further includes aluminum foil disposed on the surface of the insert forming the boundary of the brick-insert interface.
Claim 4
Dependent Claim
34 words
In a refractory brick in accordance with claim 1 wherein the heat reflective means further comprises a highly reflective paint applied to the surface of the brick forming the boundary of the brick-insert interface.
Claim 5
Dependent Claim
82 words
In a refractory brick having a recessed cold face and including at least one insulation insert located on the recessed cold face of the brick, the improvement comprising: heat reflective means provided on a surface of the insert disposed parallel to the cold face of the brick to reduce the amount of heat radiated through this region of the brick; wherein the heat reflective means comprises aluminum fo disposed on the surface of the insert forming the boundary of the brick-insert interface.
Claim 6
Dependent Claim
82 words
In a refractory brick having a recessed cold face and including at least one insulation insert located on the recessed cold face of the brick, the improvement comprising: heat reflective means provided on a surface of the insert disposed parallel to the cold face of the brick to reduce the amount of heat radiated through this region of the brick; wherein the heat reflective means comprises aluminum fo disposed on the surface of the insert forming the boundary of the brick-insert interface.
Claim 7
Dependent Claim
84 words
In a refractory brick having a recessed cold face and including at least one insulation insert located on the recessed cold face of the brick, the improvement comprising: heat reflective means provided on a surface of the insert disposed parallel to the cold face of the brick to reduce the amount of heat radiated through this region of the brick; wherein the heat reflective means comprises a highly reflective paint applied to the surface of the brick forming the boundary of the brick-insert interface.
Claim 8
Dependent Claim
84 words
In a refractory brick having a recessed cold face and including at least one insulation insert located on the recessed cold face of the brick, the improvement comprising: heat reflective means provided on a surface of the insert disposed parallel to the cold face of the brick to reduce the amount of heat radiated through this region of the brick; wherein the heat reflective means comprises a highly reflective paint applied to the surface of the brick forming the boundary of the brick-insert interface.
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) | 1992-02-14 | 1992-08-15 | 1993-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-14 | 1996-08-15 | 1997-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-14 | 2000-08-15 | 2001-02-14 | $7700.00 | Window Closed / Lapsed |