US4752537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal matrix composite fiber reinforced weld
Assignee: Boeing Co
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Filing: 1986-04-21
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Granted: 1988-06-21
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Expires: 2006-04-21
Abstract
Abstract A welded article, comprising at least one fiber reinforced metal matrix composite joined to another article with a weld having a composition of matrix metal and between about 12-20 volume percent reinforcing fibers to strengthen the weld over that of unreinforced matrix metal welds.
Inventors
- 👤 K. Bhagwan Das
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:21
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/02; B23K35/0255; B23K35/0261; B23K35/0266; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12486; Y10T428/12493; Y10T428/12729; Y10T428/12736; Y10T428/12764
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
47 words
A welded article, comprising at least two fiber reinforced metal matrix composite pieces joined by a reinforced weld, the weld having between about 12-20 volume percent reinforcing fibers to strengthen the weld over that of an unreinforced matrix metal weld and the remainder being a matrix metal.
Claim 2
Dependent Claim
47 words
A welded article, comprising at least two fiber reinforced metal matrix composite pieces joined by a reinforced weld, the weld having between about 12-20 volume percent reinforcing fibers to strengthen the weld over that of an unreinforced matrix metal weld and the remainder being a matrix metal.
Claim 3
Dependent Claim
29 words
The article of claim 1 wherein the matrix metal of each piece and of the weld is the same metal, and wherein that metal is either magnesium or aluminum.
Claim 4
Dependent Claim
22 words
The article of claim 2 wherein the fibers are selected from the group consisting of alumina, boron, silicon carbide, or silicon nitride.
Claim 5
Dependent Claim
24 words
The article of claim 1 wherein the matrix metal of each piece and of the weld includes magnesium and wherein the fibers include alumina.
Claim 6
Dependent Claim
44 words
A welded article, comprising at least one fiber reinforced metal matrix composite joined to another article with a weld having a composition of matrix metal and between about 12-20 volume percent reinforcing fibers to strengthen the weld over that of unreinforced matrix metal welds.
Claim 7
Dependent Claim
44 words
A welded article, comprising at least one fiber reinforced metal matrix composite joined to another article with a weld having a composition of matrix metal and between about 12-20 volume percent reinforcing fibers to strengthen the weld over that of unreinforced matrix metal welds.
Claim 8
Dependent Claim
13 words
The article of claim 5 wherein the matrix metal is magnesium or aluminum.
Claim 9
Dependent Claim
22 words
The article of claim 5 wherein the fibers are selected from the group consisting of alumina, boron, silicon carbide, or silicon nitride.
Claim 10
Dependent Claim
26 words
The article of claim 5 wherein the metal matrix composite contains magnesium reinforced with alumina fibers and wherein the weld contains magnesium reinforced with alumina fibers.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-06-21 | 1991-12-21 | 1992-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-21 | 1995-12-21 | 1996-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-21 | 1999-12-21 | 2000-06-21 | $7700.00 | Window Closed / Lapsed |