US3360348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite structure of inter-bonded metals for heavy-duty electrical switch contacts
Assignee: Siemens Schuckertwerke AG
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Filing: 1965-05-11
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Granted: 1967-12-26
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Expires: 1985-05-11
Abstract
No abstract record available.
Inventors
- 👤 Schreiner Horst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:59
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/04; C22C1/0475; B; B22; B22F; B22F3/00; B22F3/24; B22F3/26; B22F7/00; B22F7/002; B22F7/06; H; H01; H01H; H01H1/00; H01H1/02; H01H1/021; H01H1/023; H01H1/0231; B22F2998/00; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/929; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12021; Y10T428/1216; Y10T428/12174; Y10T428/12458
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
IN A COMPOSITE AND INTERNALLY BONDED BODY WITH A PLURALITY OF LAYERS FOR ELECTRICAL SWITCH CONTACTS COMPRISING A BODY ONE SIDE OF WHICH IS MOST COMPRESSED AND HAS THE HIGHEST CONTENT OF SPARK-RESISTANT HIGH-MELTING METAL AND THE SMALLEST CONTENT OF IMPREGNATING METAL, THE REMOTE SIDE OF SAID BODY BEING LEAST COMPRESSED AND HAVING THE LOWEST CONTENT OF HIGH-MELTING METAL AND THE HIGHEST CONTENT OF IMPREGNATING METAL, SAID SPARK-RESISTANT HIGH-MELTING METAL CONSISTING OF AN ALLOY FORMED PREPONDERANTLY OF TUNGSTEN WITH A REMAINDER SUBSTANTIALLY OF COPPER AND NICKEL, AND SAID IMPREGNATING METAL BEING FORMED SUBSTANTIALLY BY METAL SELECTED FROM THE GROUP CONSISTING OF COPPER AND SILVER AND THEIR ALLOYS, THE CONCENTRATION OF THE HIGH-MELTING METAL AND OF THE IMPREGNATING METAL WHICH FULLY IMPREGNATES THE INTERMEDIATE LAYERS GRADUALLY MERGING INTO EACH OTHER AT VALUES BETWEEN THE BORDER LAYERS WITHOUT A CONCENTRATION LEAP AND THE CONCENTRATION VARYING IN THE DIRECTION OF COMPRESSION.
Claim 2
Dependent Claim
148 words
IN A COMPOSITE AND INTERNALLY BONDED BODY WITH A PLURALITY OF LAYERS FOR ELECTRICAL SWITCH CONTACTS COMPRISING A BODY ONE SIDE OF WHICH IS MOST COMPRESSED AND HAS THE HIGHEST CONTENT OF SPARK-RESISTANT HIGH-MELTING METAL AND THE SMALLEST CONTENT OF IMPREGNATING METAL, THE REMOTE SIDE OF SAID BODY BEING LEAST COMPRESSED AND HAVING THE LOWEST CONTENT OF HIGH-MELTING METAL AND THE HIGHEST CONTENT OF IMPREGNATING METAL, SAID SPARK-RESISTANT HIGH-MELTING METAL CONSISTING OF AN ALLOY FORMED PREPONDERANTLY OF TUNGSTEN WITH A REMAINDER SUBSTANTIALLY OF COPPER AND NICKEL, AND SAID IMPREGNATING METAL BEING FORMED SUBSTANTIALLY BY METAL SELECTED FROM THE GROUP CONSISTING OF COPPER AND SILVER AND THEIR ALLOYS, THE CONCENTRATION OF THE HIGH-MELTING METAL AND OF THE IMPREGNATING METAL WHICH FULLY IMPREGNATES THE INTERMEDIATE LAYERS GRADUALLY MERGING INTO EACH OTHER AT VALUES BETWEEN THE BORDER LAYERS WITHOUT A CONCENTRATION LEAP AND THE CONCENTRATION VARYING IN THE DIRECTION OF COMPRESSION.
References Cited (Backward Citations)
GB544969A
Cited
US2464517A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-25 | 1971-06-26 | 1971-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-25 | 1975-06-26 | 1975-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-25 | 1979-06-26 | 1979-12-26 | $7700.00 | Window Closed / Lapsed |