US3688067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite silver cadmium oxide alloy contact with silver cadium surface
Assignee: Chugai Electric Industrial Co Ltd
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Filing: 1971-02-08
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Granted: 1972-08-29
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Expires: 1991-02-08
Abstract
Abstract A composite electric contact comprising a silver-cadmium oxide alloy as the contact material or element and having a silvercadmium layer integrally formed on the face opposite to the contact face. The concentration of cadmium oxide particles increases from a minimum at the contact face to a maximum toward the face with the silver-cadmium layer.
Inventors
- 👤 Akira Shibata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:37
CPC Classifications
H; H01; H01H; H01H1/00; H01H1/02; H01H1/021; H01H1/023; H01H1/0231
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
25 words
An electric contact as claimed in claim 1, wherein said silver-cadmium layer has a thickness of substantially one-tenth of the thickness of said contact material.
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) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |