US3961945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum-silicon composite
Assignee: Ethyl Corp
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Filing: 1974-04-19
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Granted: 1976-06-08
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Expires: 1994-04-19
Abstract
Abstract An aluminum-silicon composite comprising aluminum and silicon as the principal metals with lesser amounts of iron, titanium, magnesium and zinc and a substantial amount of a non-metal filler such as zircon, alumina, zirconia or aluminum silicates.
Inventors
- 👤 Robert N. Sanders
- 👤 Alex R. Valdo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:05
CPC Classifications
C; C22; C22C; C22C32/00; C22C32/0089; C22C32/001; C22C32/0015; C22C32/0036
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
85 words
A hard generally uniform metallic composite consisting essentially of a dispersion of particles between about 60 mesh and about 400 mesh in size of a hard filler selected from the group consisting of zircon, alumina, zirconia and aluminum silicates, the dispersion being in an aluminum-silicon alloy containing by weight 19 to 21% silicon, 4 to 8% magnesium and 2 to 4% copper, the balance of the alloy being essentially aluminum, and about 5 to about 80% by weight of the composite being the dispersed particles.
Claim 2
Dependent Claim
85 words
A hard generally uniform metallic composite consisting essentially of a dispersion of particles between about 60 mesh and about 400 mesh in size of a hard filler selected from the group consisting of zircon, alumina, zirconia and aluminum silicates, the dispersion being in an aluminum-silicon alloy containing by weight 19 to 21% silicon, 4 to 8% magnesium and 2 to 4% copper, the balance of the alloy being essentially aluminum, and about 5 to about 80% by weight of the composite being the dispersed particles.
Claim 3
Dependent Claim
11 words
The composite of claim 1 in which the filler is zircon.
Claim 4
Dependent Claim
23 words
The composite of claim 1 in which the proportion of filler in the composite is between about 10 and about 40% by weight.
Claim 5
Dependent Claim
52 words
The composite of claim 1 in which the alloy is essentially, in percent by weight, Silicon 19-21
Magnesium 4-8
Copper 2-4
Iron 1 Maximum
Titanium 0.3 Maximum
Manganese 0.5 Maximum
Zinc 0.5 Maximum
Aluminum Balance and the proportion of filler in the composite is between about 10 and about 40% by weight.
References Cited (Backward Citations)
US2793949A
Cited
US3600163A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-08 | 1979-12-08 | 1980-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-08 | 1983-12-08 | 1984-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-08 | 1987-12-08 | 1988-06-08 | $7700.00 | Window Closed / Lapsed |