US3128367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the electric welding of hollow bodies, such, more particularly, as ventilation casing
Assignee: Individual
•
Filing: 1961-04-10
•
Granted: 1964-04-07
•
Expires: 1981-04-10
Abstract
No abstract record available.
Inventors
- 👤 Darmon Michel
- 👤 Bihan Marcel Le
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:49
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/30; B23K11/31
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
IN A MACHINE FOR WELDING HOLLOW BODIES, A U-SHAPED STRUCTURE HAVING TWO ARMS WHICH ARE ELECTRICALLY INTERCONNECTED AND SUBSTANTIALLY SYMMETRICAL WITH ONE ANOTHER, A COUNTER ELECTRODE ON THE EXTREMITY OF EACH OF SAID ARMS, TWO WELDING ELECTRODES WHICH ARE ELECTRICALLY CONNECTED TO A CURRENT SOURCE AND DISPOSED ABOVE AND TOWARD A LATERAL EDGE OF EACH COUNTER ELECTRODE, A HOLLOW BODY TO BE WELDED BEING POSITIONED ON ONE OR THE OTHER OF SAID ARMS, AND MEANS FOR MOVING SAID ARMS AND ELECTRODES SIMULTANEOUSLY TOWARD ONE ANOTHER TO BRING ONE WELDING ELECTRODE INTO CONTACT WITH SAID BODY ON ONE ARM AND THE OTHER ELECTRODE INTO CONTACT WITH THE COUNTER ELECTRODE ON THE OTHER ARM WHEREBY A WELD IS EFFECTED BY SAID ONE WELDING ELECTRODE AND THE OTHER WELDING ELEC-
Claim 2
Dependent Claim
127 words
IN A MACHINE FOR WELDING HOLLOW BODIES, A U-SHAPED STRUCTURE HAVING TWO ARMS WHICH ARE ELECTRICALLY INTERCONNECTED AND SUBSTANTIALLY SYMMETRICAL WITH ONE ANOTHER, A COUNTER ELECTRODE ON THE EXTREMITY OF EACH OF SAID ARMS, TWO WELDING ELECTRODES WHICH ARE ELECTRICALLY CONNECTED TO A CURRENT SOURCE AND DISPOSED ABOVE AND TOWARD A LATERAL EDGE OF EACH COUNTER ELECTRODE, A HOLLOW BODY TO BE WELDED BEING POSITIONED ON ONE OR THE OTHER OF SAID ARMS, AND MEANS FOR MOVING SAID ARMS AND ELECTRODES SIMULTANEOUSLY TOWARD ONE ANOTHER TO BRING ONE WELDING ELECTRODE INTO CONTACT WITH SAID BODY ON ONE ARM AND THE OTHER ELECTRODE INTO CONTACT WITH THE COUNTER ELECTRODE ON THE OTHER ARM WHEREBY A WELD IS EFFECTED BY SAID ONE WELDING ELECTRODE AND THE OTHER WELDING ELEC-
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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) | 1967-04-07 | 1967-10-07 | 1968-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-07 | 1971-10-07 | 1972-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-07 | 1975-10-07 | 1976-04-07 | $7700.00 | Window Closed / Lapsed |