US4072788A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulating elements for walls and ceilings
Assignee: Bayer AG
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Filing: 1977-02-28
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Granted: 1978-02-07
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Expires: 1997-02-28
Abstract
Abstract The invention relates to a method for the production of insulating elements for the walls and ceilings, made from facing layers fitted to a frame. Between the facing layers, a perforated foam-permeable, optionally reinforced, intermediate layer is inserted. One of the two chambers thus formed is subsequently filled with foam. The other chamber is filled with a foam permeated granular material.
Inventors
- 👤 Peter Herweg
- 👤 Werner Barthel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:55
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/02; B29C44/04; B29C44/0461; B29C44/0469; B32; B32B; B32B15/00; B32B15/16; B29C44/12; B29C44/1209; B29C44/34; B29C44/3415; B29C44/3426; B32B15/04; B32B15/046; B32B3/00; B32B3/26; B32B3/266; B32B5/00; B32B5/16; E; E04; E04B; E04B1/00; E04B1/62; E04B1/92; E04B1/94; E04B1/941; E04B1/942; E04C; E04C2/00; E04C2/02; B29C33/00; B29C33/10; B29L; B29L2031/00; B29L2031/10; B32B2305/00; B32B2305/08; B32B2307/00; B32B2307/30; B32B2307/304; B32B2419/00; Y; Y10; Y10S; Y10S264/00; Y10S264/07; Y10T; Y10T428/00; Y10T428/23; Y10T428/233; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24331; Y10T428/24339; Y10T428/249921; Y10T428/249953; Y10T428/249986
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
103 words
A method for the production of insulating elements for walls and ceilings, comprising fixing facing layers to a frame, inserting parallel thereto a perforated foam permeable intermediate layer between the facing layers and substantially filling out the two chambers formed thereby with foam in a manner accomplished by filling the first of the two chambers formed by the perforated foam permeable intermediate layer with a granular material and introducing into the second chamber a foamable reaction mixture which expands in the second chamber, penetrates the perforated foam permeable intermediate layer and fills the spaces remaining between the granular material in the first chamber.
Claim 2
Independent Claim
103 words
A method for the production of insulating elements for walls and ceilings, comprising fixing facing layers to a frame, inserting parallel thereto a perforated foam permeable intermediate layer between the facing layers and substantially filling out the two chambers formed thereby with foam in a manner accomplished by filling the first of the two chambers formed by the perforated foam permeable intermediate layer with a granular material and introducing into the second chamber a foamable reaction mixture which expands in the second chamber, penetrates the perforated foam permeable intermediate layer and fills the spaces remaining between the granular material in the first chamber.
Claim 3
Dependent Claim
13 words
The method as claimed in claim 1, wherein the intermediate layer is reinforced.
Claim 4
Dependent Claim
14 words
The method as claimed in claim 2, wherein the foam is a polyisocyanurate foam.
Claim 5
Dependent Claim
30 words
The method as claimed in claim 2, wherein the granular material is selected from the group consisting of: expanded clay, expanded glass, expanded slate, expanded mica, cinders, and blast-furnace slag.
Claim 6
Dependent Claim
18 words
The method as claimed in claim 2, wherein the pure foam is located directly below the outer facing.
Claim 7
Dependent Claim
72 words
The insulating elements for walls and ceilings comprising of: two facing layers which are fixed to a frame, and parallel thereto a perforated foam permeable intermediate layer, the two chambers formed thereby are foam filled and characterized in that one chamber formed by the perforated foam permeable intermediate layer contains a granular material and foam which fills the spaces remaining between the granular material and the other chamber contain no granular material.
Claim 8
Dependent Claim
72 words
The insulating elements for walls and ceilings comprising of: two facing layers which are fixed to a frame, and parallel thereto a perforated foam permeable intermediate layer, the two chambers formed thereby are foam filled and characterized in that one chamber formed by the perforated foam permeable intermediate layer contains a granular material and foam which fills the spaces remaining between the granular material and the other chamber contain no granular material.
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) | 1981-02-06 | 1981-08-08 | 1982-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-06 | 1985-08-08 | 1986-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-06 | 1989-08-08 | 1990-02-07 | $7700.00 | Window Closed / Lapsed |