Patent DE1160573B successfully refreshed from Google Patents.
US3953647A
Expired / Lapsed
US
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Graphite fiber reinforced metal matrix composite
Assignee: RTX Corp
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Filing: 1973-10-05
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Granted: 1976-04-27
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Expires: 1993-10-05
Abstract
Abstract A novel filament reinforced composite comprising a plurality of fibers selected from the group consisting of graphite fibers, amorphous carbon fibers and pyrolytic graphite fibers bonded together in an aluminide matrix, selected from the group consisting of nickel aluminide, cobalt aluminide and solutions and mixtures thereof, said composite having relatively high strengths at elevated temperatures.
Inventors
- 👤 John J. Brennan
- 👤 Norman S. Bornstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:27
CPC Classifications
C; C22; C22C; C22C49/00; C22C49/14; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249924; Y10T428/249927; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2938; Y10T428/30
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
59 words
A refractory fiber reinforced composite article comprising a plurality of fibers selected from the group consisting of graphite fibers, amorphous carbon fibers and pyrolytic graphite fibers bonded together in an aluminide intermetallic matrix selected from the group consisting of nickel aluminide, cobalt aluminide and solutions and mixtures thereof, said fibers comprising approximately, by volume, 10-60% of said composite article.
Claim 2
Dependent Claim
59 words
A refractory fiber reinforced composite article comprising a plurality of fibers selected from the group consisting of graphite fibers, amorphous carbon fibers and pyrolytic graphite fibers bonded together in an aluminide intermetallic matrix selected from the group consisting of nickel aluminide, cobalt aluminide and solutions and mixtures thereof, said fibers comprising approximately, by volume, 10-60% of said composite article.
Claim 3
Dependent Claim
11 words
The article of claim 1 wherein said fibers are unidirectionally oriented.
Claim 4
Dependent Claim
13 words
The article of claim 2 wherein said intermetallic matrix is nickel aluminide. classified,
Claim 5
Dependent Claim
32 words
The article of claim 3 wherein said intermetallic matrix consists essentially of a nickel aluminide selected from the group consisting of Ni 3 Al, NiAl and both Ni 3 Al and NiAl.
Claim 6
Dependent Claim
22 words
The article of claim 3 wherein said intermetallic matrix consists essentially of, by weight, 80-100% Ni 3 Al, balance, if any, NiAl.
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) | 1979-04-27 | 1979-10-27 | 1980-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-27 | 1983-10-27 | 1984-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-27 | 1987-10-27 | 1988-04-27 | $7700.00 | Window Closed / Lapsed |