US3635702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copper-nickel alloys of high-yield strength
Assignee: Huntington Alloys Corp
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Filing: 1968-07-01
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Granted: 1972-01-18
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Expires: 1988-07-01
Abstract
Abstract Corrosion-resistant, cast (and wrought) copper-nickel alloys containing special amounts of nickel, chromium and silicon are characterized by high-yield strengths-e.g., from about 40,000 and upwards of 50,000 p.s.i. This compares with substantially less than 40,000 p.s.i. for conventional copper-nickel alloys in commercial use. Heat treatment not required to develop strength; thus, associated problems are obviated.
Inventors
- 👤 Frank A Badia
- 👤 Frank J Ansuini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:28
CPC Classifications
C; C22; C22C; C22C9/00; C22C9/06; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/926; Y10S75/00; Y10S75/95; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12903
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
18 words
An alloy in accordance with claim 1 in which the silicon content does not exceed about 0.6 percent.
Claim 2
Dependent Claim
33 words
An alloy in accordance with claim 2 in which the nickel content is at least 28 percent for cast alloys and not in excess of 27 percent for alloys in the wrought condition.
Claim 3
Dependent Claim
19 words
A cast alloy in accordance with claim 2 in which the nickel content is from 28 to 35 percent.
Claim 4
Dependent Claim
26 words
A cast alloy in accordance with claim 2 in which zirconium is present in an amount of at least about 0.05 percent, whereby weldability is enhanced.
Claim 5
Dependent Claim
29 words
A cast alloy in accordance with claim 5 having high resistance to impact by virtue of the fact that the zirconium content, if any, does not exceed 0.15 percent.
Claim 6
Dependent Claim
19 words
A cast alloy in accordance with claim 3 in which the chromium content does not exceed about 1.7 percent.
Claim 7
Dependent Claim
17 words
A cast alloy in accordance with claim 7 in which the chromium is at least 1.2 percent.
Claim 8
Dependent Claim
19 words
A wrought alloy in accordance with claim 2 in which the nickel content is from 19 to 27 percent.
Claim 9
Dependent Claim
19 words
A wrought alloy in accordance with claim 2 in which the nickel content is from 17 to 23 percent.
Claim 10
Dependent Claim
19 words
A wrought alloy in accordance with claim 3 in which the chromium content does not exceed about 1.7 percent.
Claim 11
Dependent Claim
17 words
A wrought alloy in accordance with claim 11 in which the chromium is at least 1.2 percent.
Claim 12
Dependent Claim
19 words
A wrought alloy in accordance with claim 12 in which the nickel content is from 19 to 27 percent.
Claim 13
Dependent Claim
14 words
A wrought alloy in accordance with claim 13 containing at least 0.01 percent zirconium.
Claim 14
Dependent Claim
26 words
As a new article of manufacture, a welded structure in which at least one welded component is formed from an alloy in accordance with claim 5.
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) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |