US3807969A
Expired / Lapsed
US
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Aluminum alloy electrical conductor
Assignee: Southwire Co LLC
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Filing: 1970-12-01
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Granted: 1974-04-30
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Expires: 1990-12-01
Abstract
Abstract Aluminum alloy electrical conductors are produced from aluminum base alloys containing from about 0.20% to about 1.60% by weight cobalt, about 0.30% to about 1.30% nickel, optionally up to about 2.0% of additional alloying elements, and from about 97.0% to about 99.5% by weight aluminum. The alloy conductors have an electrical conductivity of at least 57%, based on the International Annealed Copper Standard (IACS), and improved properties of increased thermal stability, tensile strength, percent ultimate elongation, ductility, fatigue resistance and yield strength as compared to conventional aluminum alloys of similar electrical properties.
Inventors
- 👤 R Schoerner
- 👤 E Chia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:04
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/02; H01B1/023; C; C22; C22C; C22C21/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4998; Y10T29/49988; Y10T29/49991
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
32 words
Aluminum alloy electrical conductor of claim 1, further including an additional alloying element selected from the group consisting of magnesium and iron, in an amount ranging from 0.001 to 1.0 weight percent.
Claim 2
Dependent Claim
25 words
Aluminum alloy electrical conductor of claim 1, further including iron as an additional alloying element in an amount ranging from about 0.1% to about 0.5%.
Claim 3
Dependent Claim
25 words
Aluminum alloy electrical conductor of claim 1, further including magnesium as an additional alloying element in an amount ranging from about 0.1% to about 0.5%.
Claim 4
Dependent Claim
18 words
Aluminum alloy electrical conductor according to claim 1, wherein the weight percentages of the constituents are as follows:
Claim 5
Dependent Claim
18 words
Aluminum alloy electrical conductor according to claim 1 wherein the weight percentages of the constituents are as follows:
Claim 6
Dependent Claim
18 words
Aluminum alloy electrical conductor according to claim 1 wherein the weight percentages of the constituents are as follows:
Claim 7
Dependent Claim
18 words
Aluminum alloy electrical conductor according to claim 1 wherein the weight percentages of the constituents are as follows:
Claim 8
Dependent Claim
18 words
The aluminum alloy electrical conductor of claim 1 wherein said conductor is in the form of a rod.
Claim 9
Dependent Claim
19 words
The aluminum alloy electrical conductor according to claim 1 wherein said conductor is in the form of a wire.
Claim 10
Dependent Claim
125 words
Method of preparing an aluminum alloy conductor having a minimum conductivity of at least 57% IACS comprising the steps of: A. alloying from about 0.20 to about 1.60 weight percent cobalt with about 0.30 to about 1.30 weight percent nickel, the remainder being aluminum with associated trace elements; B. casting the alloy in a moving mold formed between a groove in the periphery of a rotating casting wheel and a metal belt lying adjacent said groove for a portion of its length; C. hot rolling the cast alloy substantiaLly immediately after casting while the cast alloy is in substantially that condition as cast to form a continuous rod; said aluminum alloy conductor having the following properties when measured as No. 10 A.W.G. fully annealed wire:
Claim 11
Dependent Claim
33 words
Method of preparing an aluminum alloy conductor in accordance with claim 11 including the further step of drawing said conductor through wire-drawing dies, without annealing the conductor between drawing dies, to form wire.
Claim 12
Dependent Claim
36 words
The method according to claim 11 wherein the alloying step also includes the addition of alloying agents taken from the group consisting of iron and magnesium, in an amount ranging from 0.001 to 1.0%, by weight.
Claim 13
Dependent Claim
25 words
The method according to claim 13 wherein said additional alloying element is iron in an amount ranging from about 0.1% to about 0.5%, by weight.
Claim 14
Dependent Claim
25 words
The method according to claim 13 wherein said additional alloying element is magnesium in an amount ranging from about 0.1% to about 0.5%, by weight.
Claim 15
Dependent Claim
29 words
The method according to claim 11 wherein the alloying step also includes the addition of magnesium in an amount sufficient to yield an alloy having the following weight percentages:
Claim 16
Dependent Claim
29 words
The method according to claim 11 wherein the alloying step also includes the addition of iron in an amount sufficient to yield an alloy having the following weight percentages:
Claim 17
Dependent Claim
30 words
The method according to claim 11 wherein the alloying step also includes the addition of misch metal in an amount sufficient to yield an alloy having the following weight percentages:
Claim 18
Dependent Claim
31 words
The method according to claim 11 wherein the alloying step also includes the addition of niobium and tantalum in an amount sufficient to yield an alloy having the following weight percentages:
Claim 19
Dependent Claim
31 words
The method according to claim 11 wherein the alloying step also includes the addition of copper and silicon in an amount sufficient to yield an alloy having the following weight percentages:
Claim 20
Dependent Claim
29 words
The method according to claim 11 wherein the alloying step also includes the addition of zirconium in an amount sufficient to yield an alloy having the following weight percentages:
Claim 21
Dependent Claim
17 words
Aluminum alloy electrical conductor of claim 1 wherein the weight percentage of the constituents are as follows:
Claim 22
Dependent Claim
17 words
Aluminum alloy electrical conductor of claim 1 wherein the weight percentages of the constituents are as follows:
Claim 23
Dependent Claim
16 words
Aluminum alloy rod of claim 9 wherein the weight percentages of the constituents are as follows:
Claim 24
Dependent Claim
16 words
Aluminum alloy rod of claim 9 wherein the weight percentages of the constituents are as follows:
Claim 25
Dependent Claim
68 words
Aluminum alloy electrical conductor having a minimum conductivity of 57% IACS consisting essentially of from about 0.20 to about 1.60 weight percent cobalt, from about 0.30 to about 1.30 weight percent nickel, the remainder being aluminum with associated trace elements, said aluminum alloy electrical conductor having the following properties when measured a a fully annealed wire: Tensile strength: at least 12,000 psi Yield strength: at least 8,000 psi.
References Cited (Backward Citations)
US1579481A
Cited
FR706721A
Cited
US1945297A
Cited
US1916087A
Cited
GB498227A
Cited
US2245166A
Cited
US3160513A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-29 | 1977-10-29 | 1978-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-29 | 1981-10-29 | 1982-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-29 | 1985-10-29 | 1986-04-30 | $7700.00 | Window Closed / Lapsed |