US2694759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cold welded contact
Assignee: ITE Circuit Breaker Co
•
Filing: 1950-09-23
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Granted: 1954-11-16
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Expires: 1970-09-23
Abstract
No abstract record available.
Inventors
- 👤 Thumim Carl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:30
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/001; B23K35/007; B23K20/00; B23K20/22; H; H01; H01H; H01H1/00; H01H1/02; H01H1/021; H01H1/023; H01H1/0231; H01H11/00; H01H11/04; H01H11/041; H01H11/045; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/929; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12493; Y10T428/12639; Y10T428/12646; Y10T428/12653; Y10T428/12771; Y10T428/12785; Y10T428/12806; Y10T428/12826; Y10T428/1284; Y10T428/12861; Y10T428/12889; Y10T428/12903; Y10T428/1291
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
AN ELECTRICAL CONTACT ASSEMBLY COMPRISING A REFRACTORY, ELECTIRCALLY CONDUCTIVE AND ARC RESISTANT CONTACT TIP AND A COPPER CONTACT ARM; SAID CONTACT TIP HAVING COPPER SECURED TO ONE SURFACE THEREOF; SAID CONTACT ARM HAVING COPPER ON AT LEAST ONE SURFACE THEREOF; A SHEET OF SILVER INTERPOSED BETWEEN SAID COPPER SURFACES OF SAID CONTACT TIP AND SAID CONTACT ARM; SAID CONTACT ARM AND SAID SILVER BONDED AND AMALGAMATED BY MERCURY.
Claim 2
Dependent Claim
68 words
AN ELECTRICAL CONTACT ASSEMBLY COMPRISING A REFRACTORY, ELECTIRCALLY CONDUCTIVE AND ARC RESISTANT CONTACT TIP AND A COPPER CONTACT ARM; SAID CONTACT TIP HAVING COPPER SECURED TO ONE SURFACE THEREOF; SAID CONTACT ARM HAVING COPPER ON AT LEAST ONE SURFACE THEREOF; A SHEET OF SILVER INTERPOSED BETWEEN SAID COPPER SURFACES OF SAID CONTACT TIP AND SAID CONTACT ARM; SAID CONTACT ARM AND SAID SILVER BONDED AND AMALGAMATED BY MERCURY.
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) | 1957-11-15 | 1958-05-17 | 1958-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-15 | 1962-05-17 | 1962-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-15 | 1966-05-17 | 1966-11-16 | $7700.00 | Window Closed / Lapsed |