US3846054A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for fabricating double-skin foam core construction panels
Assignee: Robertson Co H H
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Filing: 1973-09-05
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Granted: 1974-11-05
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Expires: 1993-09-05
Abstract
Abstract A method of fabricating double-skin foam filled construction panels wherein the two sheets are joined along adjacent first edges by a resilient strip connection; the two sheets are separated along adjacent second edges remote from the resilient strip connection to provide an opening therebetween; foam forming ingredients are introduced through the opening and distributed across the width of and along the length of one of the sheets; the sheets are aligned with the central webs thereof in confronting relation; and the sheets are retained in the aligned relationship until the foam forming ingredients have completed their foaming and volume expansion, and provide a foamed-in-place core which connects the two sheets. Apparatus is described for fabricating the construction panels.
Inventors
- 👤 B Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:35
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/02; E04C2/26; E04C2/284; E04C2/296; B; B29; B29C; B29C44/00; B29C44/20; B29C44/32; B29C44/326; B29L; B29L2007/00; B29L2009/00; B32; B32B; B32B2250/00; B32B2250/22; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/0278; Y; Y10; Y10T; Y10T156/00; Y10T156/12; Y10T156/17; Y10T156/1702; Y10T156/1744
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
222 words
In apparatus for assembling a succession of foam filled construction panels each comprising a liner sheet, a facing sheet, and a foamed-in-place foam core, the two sheets having central webs, first edges and second edges, the combination comprising sequential zones including A. a sheet assembly zone having applicator means for applying a resilient strip connector to the first edge of the liner sheet; and engager means for engaging the first edge of the facing sheet with said resilient strip connector, thereby to provide a resilient strip connection between the first edges of the two sheets, the two sheets being positioned with the central webs thereof in confronting relation; B. a sheet diverging zone having means for diverging the thus joined sheets along second edges thereof remote from said resilient strip connection, thereby to provide an opening therebetween; C. a foaming zone having distributing means extending through said opening between the two sheets for distributing foamable foam forming ingredients along the length and across the width of the liner sheet; D. a sheet converging zone having means for converging the two sheets along the second edges thereof to position the central webs thereof in confronting relation, and with the actively foaming foam forming ingredients between the thus aligned sheets; and conveyor means for supporting and moving the two sheets through said sequential zones.
Claim 2
Dependent Claim
222 words
In apparatus for assembling a succession of foam filled construction panels each comprising a liner sheet, a facing sheet, and a foamed-in-place foam core, the two sheets having central webs, first edges and second edges, the combination comprising sequential zones including A. a sheet assembly zone having applicator means for applying a resilient strip connector to the first edge of the liner sheet; and engager means for engaging the first edge of the facing sheet with said resilient strip connector, thereby to provide a resilient strip connection between the first edges of the two sheets, the two sheets being positioned with the central webs thereof in confronting relation; B. a sheet diverging zone having means for diverging the thus joined sheets along second edges thereof remote from said resilient strip connection, thereby to provide an opening therebetween; C. a foaming zone having distributing means extending through said opening between the two sheets for distributing foamable foam forming ingredients along the length and across the width of the liner sheet; D. a sheet converging zone having means for converging the two sheets along the second edges thereof to position the central webs thereof in confronting relation, and with the actively foaming foam forming ingredients between the thus aligned sheets; and conveyor means for supporting and moving the two sheets through said sequential zones.
Claim 3
Dependent Claim
28 words
The apparatus of claim 1 wherein said dispensing means comprises plural spray devices positioned to deposit overlapping bands of said foamable foam forming ingredients on said liner sheet.
Claim 4
Dependent Claim
37 words
The apparatus of claim 1 wherein said diverging means comprises a ramp positioned to engage the facing sheet at a location adjacent to the second edge thereof, thereby to separate the facing sheet from the liner sheet.
Claim 5
Dependent Claim
55 words
The apparatus of claim 1 wherein said converging means comprises a ramp positioned to engage the facing sheet at a location adjacent to the second edge thereof, thereby to converge the facing sheet with the liner sheet and to position the central web thereof in confronting relation with the central web of the facing sheet.
Claim 6
Dependent Claim
52 words
The apparatus of claim 1 including supply means for feeding said resilient strip to said applicator means and to the first edge of each first sheet as a continuous strip; and cut-off means downstream of said applicator means for trimming the strip connector substantially flush with the opposite ends of each panel.
Claim 7
Dependent Claim
40 words
The apparatus of claim 5 including means for applying a clamping element to said resilient strip connector ahead of the leading edge of each first sheet, thereby to insure movement of each first sheet and the strip connector in unison.
Claim 8
Dependent Claim
12 words
The apparatus of claim 6 wherein said clamping element comprises a staple.
Claim 9
Dependent Claim
29 words
The apparatus of claim 6 including shear means for cutting the strip connector on that side of said clamping element remote from the leading edge of the first sheet.
Claim 10
Dependent Claim
50 words
The apparatus defined in claim 1, including E. a retention zone disposed downstream of said sheet converging zone, said retention zone having retention means for retaining the thus converged and joined sheets for a time sufficient to allow the said foam forming ingredients to complete their foaming and volume expansion.
Claim 11
Dependent Claim
52 words
The apparatus of claim 9 including supply means for feeding said resilient strip to said applicator means and to the first edge of each first sheet as a continuous sheet; and cut-off means located in said retention zone for trimming the strip connector substantially flush with the opposite ends of each panel.
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) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |