Patent US4755437A successfully refreshed from Google Patents.
US4755437A
Expired / Lapsed
US
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Castings and their production process
Assignee: Individual
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Filing: 1987-03-05
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Granted: 1988-07-05
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Expires: 2007-03-05
Abstract
Abstract The present invention relates to castings constituted by a metal matrix reinforced by fibers 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
2026-10-25 09:24
CPC Classifications
B; B22; B22D; B22D19/00; B22D19/14; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12486
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
41 words
A casting having a solid part constituted by a metal matrix reinforced by a fibrous strengthening member and at least one outgrowth, wherein said outgrowth comprises a non-metallic reinforcing framework, whereof at least part is incorporated into the fibrous strengthening member.
Claim 2
Dependent Claim
41 words
A casting having a solid part constituted by a metal matrix reinforced by a fibrous strengthening member and at least one outgrowth, wherein said outgrowth comprises a non-metallic reinforcing framework, whereof at least part is incorporated into the fibrous strengthening member.
Claim 3
Dependent Claim
26 words
A casting according to claim 1, wherein the metal matrix is made from a material chosen in the group constituted by aluminium, magnesium, silicon and titanium.
Claim 4
Dependent Claim
17 words
A casting according to claim 1, wherein the fibrous strengthening member is made from a refractory material.
Claim 5
Dependent Claim
16 words
A casting according to claim 1, wherein the reinforcing framework is made from a refractory material.
References Cited (Backward Citations)
SU522900A1
Cited
US4216682A
Cited
JPS5829564A
Cited
JPS5974247A
Cited
US4572270A
Cited
US4570316A
Cited
JPS6046860A
Cited
US4669523A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-07-05 | 1992-01-04 | 1992-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-05 | 1996-01-04 | 1996-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-05 | 2000-01-04 | 2000-07-05 | $7700.00 | Window Closed / Lapsed |