US4450207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fiber reinforced metal type composite material with high purity aluminum alloy containing magnesium as matrix metal
Assignee: Toyota Motor Corp
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Filing: 1983-08-24
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Granted: 1984-05-22
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Expires: 2003-08-24
Abstract
Abstract A fiber reinforced metal type composite material is composed essentially of a mass of reinforcing fibers intimately compounded with a matrix metal. The reinforcing fibers are either alumina fibers, carbon fibers, or a mixture thereof. The matrix metal is an alloy consisting essentially of between about 0.5% and about 4.5% magnesium, less than about 0.2% each of copper and titanium, less than about 0.5% each of silicon, zinc, iron, and manganese, and the remainder aluminum. Preferably, the amount of magnesium is between about 0.7% and about 4.5%, and even more preferably it is between about 1.0% and about 4.0%.
Inventors
- 👤 Tadashi Donomoto
- 👤 Atsuo Tanaka
- 👤 Yoshiaki Tatematsu
- 👤 Tsugio Akai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:51
CPC Classifications
C; C22; C22C; C22C49/00; C22C49/02; C22C49/04; C22C49/06; B; B22; B22D; B22D19/00; B22D19/14; C22C49/14; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12444; Y10T428/12486
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
71 words
A fiber reinforced metal type composite material, composed essentially of a mass of reinforcing fibers selected from the group consisting of alumina fibers, carbon fibers, and mixtures thereof, intimately compounded with a matrix metal which is an alloy consisting essentially of between about 0.5% and about 4.5% magnesium, less than about 0.2% each of copper and titanium, less than about 0.5% each of silicon, zinc, iron, and manganese, and remainder aluminum.
Claim 2
Dependent Claim
71 words
A fiber reinforced metal type composite material, composed essentially of a mass of reinforcing fibers selected from the group consisting of alumina fibers, carbon fibers, and mixtures thereof, intimately compounded with a matrix metal which is an alloy consisting essentially of between about 0.5% and about 4.5% magnesium, less than about 0.2% each of copper and titanium, less than about 0.5% each of silicon, zinc, iron, and manganese, and remainder aluminum.
Claim 3
Dependent Claim
28 words
A fiber reinforced metal type composite material according to claim 1, wherein the amount of magnesium in said matrix metal alloy is between about 0.7% and about 4.5%.
Claim 4
Dependent Claim
28 words
A fiber reinforced metal type composite material according to claim 2, wherein the amount of magnesium in said matrix metal alloy is between about 1.0% and about 4.0%.
Claim 5
Dependent Claim
23 words
A fiber reinforced metal type composite material according to any one of claims 1 through 3, wherein said reinforcing fibers are alumina fibers.
Claim 6
Dependent Claim
23 words
A fiber reinforced metal type composite material according to any one of claims 1 through 3, wherein said reinforcing fibers are carbon fibers.
Claim 7
Dependent Claim
33 words
A fiber reinforced metal type composite material according to any one of claims 1 through 3, wherein said reinforcing fibers are an approximately fifty/fifty by volume mixture of alumina fibers and carbon fibers.
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) | 1987-05-22 | 1987-11-21 | 1988-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-22 | 1991-11-21 | 1992-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-22 | 1995-11-21 | 1996-05-22 | $7700.00 | Window Closed / Lapsed |