Patent US4357985A successfully refreshed from Google Patents.
US4357985A
Expired / Lapsed
US
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Method of isothermally forming a copper base alloy fiber reinforced composite
Assignee: Fiber Materials Inc
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Filing: 1981-03-26
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Granted: 1982-11-09
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Expires: 2001-03-26
Abstract
Abstract The present invention comprises a process of forming a copper base alloy composite which is reinforced by graphite fibers, wherein the fibers are first coated with a continuous coating of an alloy constituent and then continuously coated with a coating of copper or a copper base alloy. The coated fibers are then heated in a vacuum under applied load, in combination with copper or a copper base alloy at a temperature above the melting point of the copper or copper base alloy but below the melting point of the alloy to be formed from the copper or copper base alloy and the alloy constituent with which said graphite fiber has first been coated.
Inventors
- 👤 Richard W. Sexton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:29
CPC Classifications
B; B22; B22D; B22D19/00; B22D19/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
95 words
A method of forming a copper base alloy graphite fiber reinforced composite, comprising the steps of: first coating said fiber with nickel, then coating said coated fiber with copper, heating said coated fiber in combination with a material selected from the group consisting of copper and copper base alloys to a temperature above the melting point of the material selected from the group consisting of copper and copper base alloys but below the melting point of the alloy to be formed, and holding said materials at said temperature until said alloy is formed and solidified.
Claim 2
Independent Claim
95 words
A method of forming a copper base alloy graphite fiber reinforced composite, comprising the steps of: first coating said fiber with nickel, then coating said coated fiber with copper, heating said coated fiber in combination with a material selected from the group consisting of copper and copper base alloys to a temperature above the melting point of the material selected from the group consisting of copper and copper base alloys but below the melting point of the alloy to be formed, and holding said materials at said temperature until said alloy is formed and solidified.
Claim 3
Dependent Claim
17 words
The method of claim 1 wherein the material with which the coated fiber is heated is copper.
Claim 4
Dependent Claim
21 words
The method of claim 1 wherein the material with which the coated fiber is heated is a nickel bearing copper alloy.
Claim 5
Dependent Claim
18 words
The method of claim 1 wherein said heating of said coated fiber is carried out in a vacuum.
Claim 6
Dependent Claim
19 words
The method of claim 1 wherein said heating of said coated fiber is carried out under a hydrogen atmosphere.
Claim 7
Dependent Claim
20 words
The method of claim 1 wherein said heating of said coated fiber is conducted for about 15 minutes or less.
Claim 8
Dependent Claim
35 words
The method of claim 4 wherein said heating of said coated fiber is carried out under an applied load of a sufficient size to eliminate voids and bring about complete consolidation of said reinforced composite.
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) | 1985-11-08 | 1986-05-10 | 1986-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-08 | 1990-05-10 | 1990-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-08 | 1994-05-10 | 1994-11-09 | $7700.00 | Window Closed / Lapsed |