US4727002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High strength copper alloy wire
Assignee: Hudson Wire Co
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Filing: 1986-06-02
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Granted: 1988-02-23
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Expires: 2006-06-02
Abstract
Abstract A wire having a tensile strength of at least 95 psi and conductivity of at least 60 percent IACS is provided. The wire is manufactured from a precipitation hardenable alloy, the alloy consisting essentially of about 0.38 percent beryllium, 1.66 percent nickel or cobalt and the remainder copper. The manufacture comprises one or more processing steps concluding with cold working the alloy to a wire and an area reduction of at least 99 percent.
Inventors
- 👤 Tom Inagaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:46
CPC Classifications
C; C22; C22F; C22F1/00; C22F1/08; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12882
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
69 words
A wire having a tensile strength of at least 95 psi and conductivity of at least 60% IACS, wherein said wire is manufactured from a precipitation hardenable alloy, said alloy consisting essentially of about 0.38% beryllium, 1.66% nickel or cobalt and the remainder copper, said manufacture comprising one or more processing steps concluding with cold working the alloy to a wire and an area reduction of at least 99%.
Claim 2
Dependent Claim
69 words
A wire having a tensile strength of at least 95 psi and conductivity of at least 60% IACS, wherein said wire is manufactured from a precipitation hardenable alloy, said alloy consisting essentially of about 0.38% beryllium, 1.66% nickel or cobalt and the remainder copper, said manufacture comprising one or more processing steps concluding with cold working the alloy to a wire and an area reduction of at least 99%.
Claim 3
Dependent Claim
27 words
The wire of claim 1 wherein said cold working is followed by precipitation heat treatment at a temperature of 750°-950° F. for a period of 1-4 hours.
Claim 4
Dependent Claim
21 words
The wire of claim 2 wherein said cold working is performed directly without prior surface treatment or intermediate annealing said alloy.
Claim 5
Dependent Claim
29 words
The wire of claim 2 wherein said precipitation heat treatment takes place in a furnace at a temperature of about 880° F. for a time of about 3 hours.
Claim 6
Dependent Claim
41 words
The wire of claim 1 wherein said processing steps comprise heating said alloy to the solution annealing temperature of 1650°-1800° F. at which most elements of the alloy would be in solution and rapidly quenching said alloy to about room temperature.
Claim 7
Dependent Claim
18 words
The wire of claim 1 wherein said processing steps further include plating said alloy with nickel or silver.
References Cited (Backward Citations)
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Cited
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GB621224A
Cited
JPS56163248A
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US4594116A
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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) | 1991-02-22 | 1991-08-24 | 1992-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-22 | 1995-08-24 | 1996-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-22 | 1999-08-24 | 2000-02-23 | $7700.00 | Window Closed / Lapsed |