Patent US3131290A successfully refreshed from Google Patents.
US3131290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrode connection
Assignee: Arcair Co
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Filing: 1961-11-17
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Granted: 1964-04-28
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Expires: 1981-11-17
Abstract
No abstract record available.
Inventors
- 👤 Myron D Stepath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:27
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/12; B23K9/121
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A JOINT FOR CONNECTING CARBON-GRAPHITE ELECTRODES COMPRISING A SOCKET TERMINAL AND A PLUG TERMINAL FRICTIONALLY RECEIVED IN SAID SOCKET TERMINAL, SAID PLUG TERMINAL HAVING A MAJOR DIAMETER SUBSTANTIALLY TWO-THIRDS OF THE ELECTRODE DIAMETER AND A LENGTH ABOUT ONE AND ONEEIGHTH TIMES THE DIAMETER OF THE ELECTRTODE, THE WALL OF SAID PLUG TERMIANAL TRAPERING FROM SAID MAJOR DIAMETER, SAID SOCKET TERMINAL HAVING AN END WALL AND A CORRESPONDINGLY TAPERED SIDE WALL FOR FRICTIONALLY RECEIVING SAID PLUG TERMINAL, THE MINIMUM THICKNESS OF SAID SIDE WALL BEING APPROXIMATELY ONE-SIXTH OF THE ELECTRODE DIAMETER, AND A VENT HOLE IN THE SIDE WALL OF SAID SOCKET TERMINAL PREVENTING THE ACCUMULATION OF GAS BETWEEN SAID TERMINALS.
Claim 2
Dependent Claim
110 words
A JOINT FOR CONNECTING CARBON-GRAPHITE ELECTRODES COMPRISING A SOCKET TERMINAL AND A PLUG TERMINAL FRICTIONALLY RECEIVED IN SAID SOCKET TERMINAL, SAID PLUG TERMINAL HAVING A MAJOR DIAMETER SUBSTANTIALLY TWO-THIRDS OF THE ELECTRODE DIAMETER AND A LENGTH ABOUT ONE AND ONEEIGHTH TIMES THE DIAMETER OF THE ELECTRTODE, THE WALL OF SAID PLUG TERMIANAL TRAPERING FROM SAID MAJOR DIAMETER, SAID SOCKET TERMINAL HAVING AN END WALL AND A CORRESPONDINGLY TAPERED SIDE WALL FOR FRICTIONALLY RECEIVING SAID PLUG TERMINAL, THE MINIMUM THICKNESS OF SAID SIDE WALL BEING APPROXIMATELY ONE-SIXTH OF THE ELECTRODE DIAMETER, AND A VENT HOLE IN THE SIDE WALL OF SAID SOCKET TERMINAL PREVENTING THE ACCUMULATION OF GAS BETWEEN SAID TERMINALS.
References Cited (Backward Citations)
FR473636A
Cited
US1479662A
Cited
US1512786A
Cited
US1785587A
Cited
US2024445A
Cited
US2531005A
Cited
US3030544A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |