Patent US3154660A successfully refreshed from Google Patents.
US3154660A
Expired / Lapsed
US
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Arc-resistant electrical contact having a cadmium-copper, alloy surface
Assignee: Motors Liquidation Co
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Filing: 1962-03-26
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Granted: 1964-10-27
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Expires: 1982-03-26
Abstract
No abstract record available.
Inventors
- 👤 Romeo R Witherspoon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:11
CPC Classifications
H; H01; H01H; H01H1/00; H01H1/02; H01H1/021; H01H1/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
AN ELECTRICAL CONTACT FOR USE IN AN APPLICATION WHERE ARCING NORMALLY OCCURS COMPRISING; A SOLID COPPER CONTACT HAVING A COPPER-CADMIUM SURFACE LAYER INTEGRALLY FORMED THEREWITH, SAID LAYER INCLUDING DIFFUSED CADMIUM IN PERCENTAGES OF FROM .5% TO 2% BY WEIGHT OF THE COPPER AND EXTENDING WITHIN THE CONTACT TO A DEPTH OF FROM .0005" TO .03", THE REMAINDER OF THE CONTACT BEING SUBSTANTIALLY PURE COPPER.
Claim 2
Dependent Claim
64 words
AN ELECTRICAL CONTACT FOR USE IN AN APPLICATION WHERE ARCING NORMALLY OCCURS COMPRISING; A SOLID COPPER CONTACT HAVING A COPPER-CADMIUM SURFACE LAYER INTEGRALLY FORMED THEREWITH, SAID LAYER INCLUDING DIFFUSED CADMIUM IN PERCENTAGES OF FROM .5% TO 2% BY WEIGHT OF THE COPPER AND EXTENDING WITHIN THE CONTACT TO A DEPTH OF FROM .0005" TO .03", THE REMAINDER OF THE CONTACT BEING SUBSTANTIALLY PURE COPPER.
References Cited (Backward Citations)
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US2216510A
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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) | 1967-10-27 | 1968-04-27 | 1968-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-27 | 1972-04-27 | 1972-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-27 | 1976-04-27 | 1976-10-27 | $7700.00 | Window Closed / Lapsed |