US4029839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound and thermal insulating construction element
Assignee: Individual
•
Filing: 1975-12-03
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Granted: 1977-06-14
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Expires: 1995-12-03
Abstract
Abstract Carpet scraps are comminuted into small pieces having a maximum length of between 2 and 10 mm and are mixed with one component of a two-part synthetic-resin foam. The comminuted mixture containing the carpet scraps are then extruded in a thick band on top of a lower cover sheet and the other element of the synthetic-resin foam is sprayed over the band. Thereupon an upper cover sheet is applied to the band and the thus sandwiched band is passed between a pair of pressing belts as the components foam and harden.
Inventors
- 👤 Klaus Lesti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:57
CPC Classifications
B; B32; B32B; B32B25/00; B32B25/10; E; E04; E04F; E04F15/00; E04F15/18; E04F15/20; E04F15/206; B29; B29B; B29B17/00; B29B17/0026; B29B17/0042; B29B17/04; B29B17/0412; B32B5/00; B32B5/16; B32B7/00; B32B7/04; B32B7/12; C; C08; C08J; C08J11/00; C08J11/04; C08J11/06; D; D01; D01G; D01G11/00; D01G11/04; B29K; B29K2105/00; B29K2105/26; B29K2995/00; B29K2995/0001; B29K2995/0002; B29L; B29L2031/00; B29L2031/732; B29L2031/7322; B32B2419/00; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/62; Y02W30/66; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249986; Y10T428/249987; Y10T428/25
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
55 words
A method of making a construction element comprising the steps of: comminuting carpet which consists of a rubbery backing and fibers anchored thereto on one side into small pieces, mixing said pieces with a binder to form a pressable mass, and pressing said mass and hardening said binder to form a rigid insulating construction element.
Claim 2
Independent Claim
55 words
A method of making a construction element comprising the steps of: comminuting carpet which consists of a rubbery backing and fibers anchored thereto on one side into small pieces, mixing said pieces with a binder to form a pressable mass, and pressing said mass and hardening said binder to form a rigid insulating construction element.
Claim 3
Dependent Claim
24 words
The method defined in claim 1 wherein said carpet is comminuted into pieces having a maximum length of between 2 mm and 10 mm.
Claim 4
Dependent Claim
48 words
The method defined in claim 2 wherein the said pieces are first mixed with one component of a synthetic-resin foam constituting said binder, then are extruded as a continuous strand, then are mixed with the other component of said synthetic-resin foam constituting said binder and thereafter are pressed.
Claim 5
Dependent Claim
36 words
The method defined in claim 1 wherein said mass is extruded on a lower foil, said method further comprising the steps of applying an upper foil on top of said mass immediately prior to pressing thereof.
Claim 6
Dependent Claim
40 words
A construction element comprising a pressed rigid mass of a hardened binder and comminuted carpet pieces which consists of a rubbery backing and fibers anchored thereto on one side, said pieces being embedded in said binder and held together thereby.
Claim 7
Dependent Claim
40 words
A construction element comprising a pressed rigid mass of a hardened binder and comminuted carpet pieces which consists of a rubbery backing and fibers anchored thereto on one side, said pieces being embedded in said binder and held together thereby.
Claim 8
Dependent Claim
13 words
The element defined in claim 5 wherein said binder is a synthetic-resin foam.
Claim 9
Dependent Claim
25 words
The element defined in claim 5 wherein said binder is an adhesive selected from the group containing rubber, latex, polyethylene, phenol resin, polystyrol, and polychloroprene.
Claim 10
Dependent Claim
20 words
The element defined in claim 5, further comprising at least one skin on at least one face of said element.
Claim 11
Dependent Claim
12 words
The element defined in claim 5 wherein said binder is polyurethane foam.
Claim 12
Dependent Claim
26 words
The element defined in claim 5 wherein said carpet pieces have a maximum length of 10 mm and said element is at least 20 mm thick.
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) | 1980-06-13 | 1980-12-13 | 1981-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-13 | 1984-12-13 | 1985-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-13 | 1988-12-13 | 1989-06-14 | $7700.00 | Window Closed / Lapsed |