US3940524A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Article comprising foam plastic covered with an outer surface strengthening layer
Assignee: Bayer AG
•
Filing: 1974-05-28
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Granted: 1976-02-24
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Expires: 1994-05-28
Abstract
Abstract An article such as a structural member composed of a core of foamed material having bonded thereto for strengthening thereof, a laminate made up of an outer skin and a reinforcing insert. The reinforcing insert comprises at least one mat-loose fiber sheet combination with the mat disposed adjacent the skin and the loose fiber sheet disposed adjacent the foamed core. The material forming the skin penetrates from the skin, at least partially through the insert to an outer portion of the foamed core, and at least through the outermost mat so that the outermost mat is completely embedded in the material forming the skin.
Inventors
- 👤 Peter Hoppe
- 👤 Gustav Drouven
- 👤 Helmut Leyer
- 👤 Johann Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:41
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/02; B29C44/12; B29K; B29K2105/00; B29K2105/06; Y; Y10; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23914; Y10T428/24; Y10T428/24174; Y10T428/249921; Y10T428/249994; Y10T428/249999
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
138 words
In an article such as a structural member and the like having high static and dynamic strength values comprising a core of foamed material having bonded thereto at an outer portion thereof a bonded laminate composed essentially of an outer skin and a reinforcing insert comprising at least one mat-fiber fleece combination in which the mat and fiber fleece are joined so as to constitute a single unit, with the mat disposed adjacent the skin and the fiber fleece disposed adjacent the foamed core and the foamed core penetrating the fiber fleece, the improvement which comprises the material forming the skin penetrating from the skin, partially through the insert to an outer portion of the foamed core, and at least through the outermost mat so that the outermost mat is completely embedded in the material forming the skin.
Claim 2
Dependent Claim
138 words
In an article such as a structural member and the like having high static and dynamic strength values comprising a core of foamed material having bonded thereto at an outer portion thereof a bonded laminate composed essentially of an outer skin and a reinforcing insert comprising at least one mat-fiber fleece combination in which the mat and fiber fleece are joined so as to constitute a single unit, with the mat disposed adjacent the skin and the fiber fleece disposed adjacent the foamed core and the foamed core penetrating the fiber fleece, the improvement which comprises the material forming the skin penetrating from the skin, partially through the insert to an outer portion of the foamed core, and at least through the outermost mat so that the outermost mat is completely embedded in the material forming the skin.
Claim 3
Dependent Claim
49 words
The article of claim 1, the reinforcing insert comprising at least two mat-fiber fleece combinations joined together as a single unit, the material forming the skin penetrating at least through the two outermost mats so that the two outermost mats are completely embedded in the material forming the skin.
Claim 4
Dependent Claim
19 words
The article of claim 1 in which the material forming the skin penetrates partially through the innermost fiber fleece.
Claim 5
Dependent Claim
19 words
The article of claim 2 in which the material forming the skin penetrates partially through the innermost fiber fleece.
Claim 6
Dependent Claim
20 words
The articles according to claim 1, the material forming the skin being an epoxy resin, polyester resin or polyurethane resin.
Claim 7
Dependent Claim
20 words
The article according to claim 2, the material forming the skin being an epoxy resin, polyester resin or polyurethane resin.
Claim 8
Dependent Claim
11 words
The article according to claim 1, the core being polyurethane foam.
Claim 9
Dependent Claim
11 words
The article according to claim 2, the core being polyurethane foam.
Claim 10
Dependent Claim
11 words
The article according to claim 5, the core being polyurethane foam.
Claim 11
Dependent Claim
11 words
The article according to claim 6, the core being polyurethane foam.
References Cited (Backward Citations)
GB1050346A
Cited
US2639252A
Cited
US2870793A
Cited
US2948651A
Cited
GB898242A
Cited
GB927526A
Cited
US3591444A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-23 | 1979-08-25 | 1980-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-23 | 1983-08-25 | 1984-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-23 | 1987-08-25 | 1988-02-24 | $7700.00 | Window Closed / Lapsed |