US4669523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Castings and their production process
Assignee: Airbus Group SAS
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Filing: 1986-06-26
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Granted: 1987-06-02
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Expires: 2006-06-26
Abstract
Abstract The present invention relates to castings constituted by a metal matrix reinforced by fibres and having outgrowths. Firstly, a reinforcing framework is produced, which is incorporated into the fibrous strengthening member, the complete entity being placed in a mould and the metal matrix is cast. The latter penetrates the fibrous strengthening member and the reinforcing framework. The latter is positioned at the location of an outgrowth which, after solidification of the metal matrix, is consequently reinforced. Application to the production of castings having fixing tabs or lobes.
Inventors
- 👤 Michele Sabatie
- 👤 Michel Maree
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:40
CPC Classifications
B; B22; B22D; B22D19/00; B22D19/14; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12486
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
109 words
A process for the preparation of a casting incorporating a solid part constituted by a metal matrix reinforced by a fibrous strengthening member and at least one metal outgrowth, wherein it comprises the following stages consisting of: (a) partly producing the fibrous strengthening member on a support constituting the die of the mould, (b) separately producing a reinforcing framework, (c) incorporating at least part of the reinforcing framework into the fibrous strengthening member, (d) placing the fibrous strengthening member in the mould, and (e) casting the metal matrix in the closed mould, so as to completely fill all the spaces within the fibrous strengthening member and the reinforcing framework.
Claim 2
Dependent Claim
109 words
A process for the preparation of a casting incorporating a solid part constituted by a metal matrix reinforced by a fibrous strengthening member and at least one metal outgrowth, wherein it comprises the following stages consisting of: (a) partly producing the fibrous strengthening member on a support constituting the die of the mould, (b) separately producing a reinforcing framework, (c) incorporating at least part of the reinforcing framework into the fibrous strengthening member, (d) placing the fibrous strengthening member in the mould, and (e) casting the metal matrix in the closed mould, so as to completely fill all the spaces within the fibrous strengthening member and the reinforcing framework.
Claim 3
Dependent Claim
31 words
A process according to claim 1, wherein it comprises a supplementary stage, performed after stage (b) and which consists of at least partly covering the reinforcing framework with a protective cap.
Claim 4
Dependent Claim
25 words
A process according to claim 2, wherein the protective cap is made from a material able to melt during the casting of the metal matrix.
Claim 5
Dependent Claim
23 words
A process according to claim 1, wherein the reinforcing framework is produced by the compression of particles or fibres with an organic binder.
Claim 6
Dependent Claim
18 words
A process according to claim 1, wherein the reinforcing framework is produced by the multidimensional weaving of fibres.
Claim 7
Dependent Claim
18 words
A process according to claim 1, wherein the reinforcing framework is produced by the winding of a fabric.
Claim 8
Dependent Claim
25 words
A process according to claim 6, wherein the fabric is positioned on a particle or fibre core made from the same material as the fabric.
Claim 9
Dependent Claim
36 words
A process according to claim 1, wherein the reinforcing framework has fringes and includes a supplementary stage, performed after stage (b) and which consists of spreading the fringes by flattening over part of the fibrous framework.
Claim 10
Dependent Claim
31 words
A process according to claim 1, wherein use is made of a meltable pin incorporated into the fibrous strengthening member and onto which is threaded the reinforcing framework during stage (c).
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) | 1990-06-01 | 1990-12-01 | 1991-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-01 | 1994-12-01 | 1995-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-01 | 1998-12-01 | 1999-06-02 | $7700.00 | Window Closed / Lapsed |