Patent US4031682A successfully refreshed from Google Patents.
US4031682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prefabricated building panel and method of making
Assignee: Metropolitan Industries Inc
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Filing: 1976-06-22
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Granted: 1977-06-28
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Expires: 1996-06-22
Abstract
Abstract A method of making a building panel and the panel made by the steps which include laying a mold form horizontally, laying bricks in the pattern indicated in the mold form and depositing a fibrous and cementitious mixture in the spaces between the bricks and over the tops of the bricks. Providing a reinforcing lattice work and forcing it into the still soft cementitious mixture. Subsequently, a resin insulating material is foamed in situ in the mold cavities formed between the elements of the lattice work. Optionally, a smooth finish coat of material may be troweled or sprayed over the insulation material.
Inventors
- 👤 J. Steven Renkert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:52
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/02; E04C2/04; E04C2/041; B; B28; B28B; B28B19/00; B28B19/0053; E04C2002/005; E04C2002/007
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
164 words
A wall panel including a plurality of ceramic, masonry or the like facing bricks spaced apart but bonded together by a first cementitious mixture deposited and hardened in the spaces separating the bricks, the cementitious mixture covering a rear portion of some of the bricks but none of the front portion, a lattice work of beams and shafts joined to both the back portions of at least some of the bricks by the bond of said cementitious mixture and to each other by welding, at least some of the beams and shafts being of a cross-sectional shape other than round, thereby providing a more rigid composite panel, a layer of a second cementitious mixture at least partially covering the exposed surface of the lattice work, bricks and the first cementitious mixture, said layer helping to join the lattice work to the facing bricks, said second cementitious mixture including hydrated cement and glass fibers, said layer having a thickness not substantially greater than 1/4 inch.
Claim 2
Dependent Claim
164 words
A wall panel including a plurality of ceramic, masonry or the like facing bricks spaced apart but bonded together by a first cementitious mixture deposited and hardened in the spaces separating the bricks, the cementitious mixture covering a rear portion of some of the bricks but none of the front portion, a lattice work of beams and shafts joined to both the back portions of at least some of the bricks by the bond of said cementitious mixture and to each other by welding, at least some of the beams and shafts being of a cross-sectional shape other than round, thereby providing a more rigid composite panel, a layer of a second cementitious mixture at least partially covering the exposed surface of the lattice work, bricks and the first cementitious mixture, said layer helping to join the lattice work to the facing bricks, said second cementitious mixture including hydrated cement and glass fibers, said layer having a thickness not substantially greater than 1/4 inch.
Claim 3
Dependent Claim
35 words
The panel of claim 1 including a layer of insulation material, said insulation material being disposed juxtaposed to the layer of said second cementitious mixture and in the cavities formed between the beams and shafts.
Claim 4
Dependent Claim
21 words
The panel of claim 2 including a layer of cementitious material applied over said insulation material to encapsulate said insulation material.
Claim 5
Dependent Claim
25 words
The panel of claim 2 wherein the insulation material is a resin foamed in situ to bond to the layer of the second cementitious mixture.
Claim 6
Dependent Claim
33 words
The panel of claim 4 wherein the thickness of the foamed resin is approximately the thickness of the lattice work which serves as a mold form for the resin during its fluid stage.
Claim 7
Dependent Claim
15 words
The panel of claim 1 wherein the glass fibers are approximately 1/2 inch in length.
Claim 8
Dependent Claim
26 words
The wall panel of claim 1 including an adhesive layer between the bricks and the first cementitious mixture serving to enhance the bonding between the two.
Claim 9
Dependent Claim
20 words
The wall panel of claim 1 wherein the weight ratio of cement to glass fibers is about 20 to 1.
References Cited (Backward Citations)
US2595142A
Cited
US2825221A
Cited
US3350827A
Cited
US3660214A
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US3654742A
Cited
US3666606A
Cited
US3646715A
Cited
US3965635A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-27 | 1980-12-27 | 1981-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-27 | 1984-12-27 | 1985-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-27 | 1988-12-27 | 1989-06-28 | $7700.00 | Window Closed / Lapsed |