US4092157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing silver-cadmium oxide alloys
Assignee: Pulse Electronics Corp
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Filing: 1976-09-10
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Granted: 1978-05-30
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Expires: 1996-09-10
Abstract
Abstract This application describes the step-wise application of heat during the sintering of a mixture of silver and cadmium oxide to give an alloy having improved characteristics. These alloys are useful as electric contacts in high electric current applications.
Inventors
- 👤 F. Joseph Reid
- 👤 Han J. Kim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:47
CPC Classifications
H; H01; H01H; H01H1/00; H01H1/02; H01H1/021; H01H1/023; H01H1/0237; H01H1/02372; H01H1/02374; C; C22; C22C; C22C32/00; C22C32/001; C22C32/0015; C22C32/0021
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
36 words
The process for preparing a silver-cadmium oxide alloy which comprises heating a compact of silver-cadmium oxide at from about 750° C to about 850° C, and thereafter heating at an elevated temperature of about 900° C.
Claim 2
Dependent Claim
36 words
The process for preparing a silver-cadmium oxide alloy which comprises heating a compact of silver-cadmium oxide at from about 750° C to about 850° C, and thereafter heating at an elevated temperature of about 900° C.
Claim 3
Dependent Claim
11 words
The process of claim 1 wherein said compact is additive free.
Claim 4
Dependent Claim
19 words
The process of claim 2 wherein said first-mentioned heating is conducted for from about 30 to about 120 minutes.
Claim 5
Dependent Claim
20 words
The process of claim 3 wherein said first-mentioned heating is conducted at from about 790° C to about 810° C.
Claim 6
Dependent Claim
15 words
The process of claim 4 wherein said first-mentioned heating is conducted for about 60 minutes.
Claim 7
Dependent Claim
25 words
The process of claim 2 wherein said compact contains about 70% to about 95% silver particles and about 30% to about 5% cadmium oxide particles.
Claim 8
Dependent Claim
19 words
The process of claim 2 wherein said compact contains about 85% silver particles and about 15% cadmium oxide particles.
Claim 9
Dependent Claim
47 words
A process for preparing a silver-cadmium oxide alloy which comprises forming a compact of silver particles and cadmium oxide particles, heating said compact at from about 750° C to about 850° C, and thereafter further heating said heated compact at an elevated temperature of about 900° C.
Claim 10
Dependent Claim
47 words
A process for preparing a silver-cadmium oxide alloy which comprises forming a compact of silver particles and cadmium oxide particles, heating said compact at from about 750° C to about 850° C, and thereafter further heating said heated compact at an elevated temperature of about 900° C.
Claim 11
Dependent Claim
31 words
The process of claim 8 wherein said compact is additive free and is formed by providing a blend of silver particles and cadmium oxide particles and compacting said blend with pressure.
Claim 12
Dependent Claim
19 words
The process of claim 9 wherein said first-mentioned heating is conducted for from about 30 to about 120 minutes.
Claim 13
Dependent Claim
19 words
The process of claim 9 wherein said first-mentioned heating is conducted at about 790° C to about 810° C.
Claim 14
Dependent Claim
15 words
The process of claim 11 wherein said first-mentioned heating is conducted for about 60 minutes.
Claim 15
Dependent Claim
19 words
The process of claim 9 wherein said compact contains about 85% silver particles and about 15% cadmium oxide particles.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-29 | 1981-11-28 | 1982-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-29 | 1985-11-28 | 1986-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-29 | 1989-11-28 | 1990-05-30 | $7700.00 | Window Closed / Lapsed |