Patent US3811311A successfully refreshed from Google Patents.
US3811311A
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US
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Making flat copper-clad steel wire
Assignee: Anaconda Co
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Filing: 1972-04-07
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Granted: 1974-05-21
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Expires: 1992-04-07
Abstract
Abstract A more uniform cladding thickness is retained on flat copperclad steel wire by drawing the first rectangular sections, rather than rolling them, from round wire, and then rolling the final flat wire.
Inventors
- 👤 A Barone
- 👤 Ascoli R D
- 👤 C Bechle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:44
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/04; B21C37/042; B23; B23K; B23K20/00; Y; Y10; Y10S; Y10S72/00; Y10S72/70
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
57 words
The method of forming a flat copper-clad steel wire comprising the steps of: A. cold dRawing round copper-clad steel wire into a wire of rectangular section, and B. cold rolling said rectangular sectioned wire thereby flattening the same and decreasing its sectional area while retaining a substantial thickness of copper over the entire surface of said wire.
Claim 2
Independent Claim
57 words
The method of forming a flat copper-clad steel wire comprising the steps of: A. cold dRawing round copper-clad steel wire into a wire of rectangular section, and B. cold rolling said rectangular sectioned wire thereby flattening the same and decreasing its sectional area while retaining a substantial thickness of copper over the entire surface of said wire.
Claim 3
Dependent Claim
27 words
The method of claim 1 wherein the longer dimension of a section of said flattened wire is at least four times the shorter dimension of said section.
Claim 4
Dependent Claim
29 words
The method of claim 2 wherein the longer dimension of said rectangular section after drawing but prior to rolling is at least twice the shorter dimension of said section.
Claim 5
Dependent Claim
24 words
The method of claim 1 wherein said cold drawing into a rectangular section is effected through a plurality of dies in a continuous run.
Claim 6
Dependent Claim
24 words
The method of claim 3 wherein said cold drawing into a rectangular section is effected through a plurality of dies in a continuous run.
Claim 7
Dependent Claim
26 words
The method of claim 2 wherein said longer dimension exceeds the longer dimension of the final of said rectangular sections after drawing but prior to rolling.
References Cited (Backward Citations)
US1813539A
Cited
US1922770A
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US2152842A
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US2134014A
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US2146788A
Cited
US2268617A
Cited
US2286759A
Cited
US3645123A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-20 | 1977-11-19 | 1978-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-20 | 1981-11-19 | 1982-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-20 | 1985-11-19 | 1986-05-21 | $7700.00 | Window Closed / Lapsed |