US3650863A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making laminated foam-filled structural units
Assignee: Fried Krupp AG Hoesch Krupp
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Filing: 1969-07-09
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Granted: 1972-03-21
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Expires: 1989-07-09
Abstract
Abstract Structural units, and method and apparatus for making the same. Two webs are advanced in spaced parallel predetermined paths. A foam material is deposited on the upper surface of the lower web and foamed to form a foam layer. An intermediate web is applied onto the foam layer. An intermediate layer of sound- or fireretarding material is applied onto the intermediate web, and the space between the intermediate layer and the upper web has foam material introduced thereinto and converted into a foam layer, whereby to obtain an elongated structural laminar unit consisting of the various layers and webs which adhere to one another.
Inventors
- 👤 Reinhard Klinkosch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:11
CPC Classifications
B; B31; B31F; B31F1/00; B31F1/20; B31F1/24; B31F1/26; B31F1/28; B31F1/2813; B32; B32B; B32B13/00; B32B13/04; B32B13/045; B29; B29C; B29C44/00; B29C44/02; B29C44/12; B29C44/1214; B29C44/20; B29C44/26; B29C44/32; B29C44/326; B29C44/329; B29C44/332; B32B13/08; B32B27/00; B32B29/00; B32B29/002; B32B29/007; B32B29/02; B32B3/00; B32B3/02; B32B3/06; B32B5/00; B32B5/22; B32B5/24; B32B5/245; E; E04; E04C; E04C2/00; E04C2/02; E04C2/26; E04C2/284; E04C2/292; E04C2/296; B29L; B29L2007/00; B29L2009/00; B32B2262/00; B32B2262/10; B32B2262/101; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/0278; B32B2307/00; B32B2307/10; B32B2307/102; B32B2307/30; B32B2307/306; B32B2307/3065; B32B2607/00; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1008; Y10T156/101; Y10T156/12; Y10T156/17; Y10T156/1702; Y10T156/1712; Y10T156/1722; Y10T156/1727; Y10T156/1732; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24331; Y10T428/249921; Y10T428/249953; Y10T428/249981; Y10T428/249987; Y10T428/24999; Y10T428/31504; Y10T428/31547
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
17 words
A method as defined in claim 1, wherein said first and said second materials are preferably identical.
Claim 2
Dependent Claim
25 words
A method as defined in claim 1, wherein at least one of said first and third webs consists at least in part of metallic material.
Claim 3
Dependent Claim
14 words
A method as defined in claim 1, wherein said second web consists of paper.
Claim 4
Dependent Claim
17 words
A method as defined in claim 1, wherein said material of said intermediate layer is fire retardant.
Claim 5
Dependent Claim
17 words
A method as defined in claim 1, wherein said material of said intermediate layer is sound retardant.
Claim 6
Dependent Claim
25 words
A method as defined in claim 1, wherein the step of depositing said intermediate layer comprises depositing said intermediate layer manually on said second web.
Claim 7
Dependent Claim
39 words
A method as defined in claim 1, wherein said second layer is provided in form of a coil, and wherein the step of applying said second layer to said first layer comprises withdrawing said second layer from said coil.
Claim 8
Dependent Claim
60 words
A method as defined in claim 1; and further comprising the step of applying a strip material against the opposite longitudinal edges of said webs at least intermediate said fourth and fifth locations and prior to introducing of said second material, to thereby laterally close said gap and define an enclosed space for preventing lateral escape of said second material.
Claim 9
Dependent Claim
41 words
A method as defined in claim 1; and further comprising the step of continuously bending the opposite longitudinal edges of said first and third webs inwardly towards one another prior to applying and introducing of said first and second materials, respectively.
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) | 1975-03-21 | 1975-09-20 | 1976-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-21 | 1979-09-20 | 1980-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-21 | 1983-09-20 | 1984-03-21 | $7700.00 | Window Closed / Lapsed |