US3239646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for monitoring welds
Assignee: AT&T Inc
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Filing: 1962-06-25
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Granted: 1966-03-08
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Expires: 1982-06-25
Abstract
No abstract record available.
Inventors
- 👤 Floyd H Goode
- 👤 Jr Leo A Remley
- 👤 Jr Raymond O Terry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:03
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
IN A PERCUSSION WELDING DEVICE HAVING FACILITIES FOR MOVING A PAIR OF ELEMENTS INTO PERCUSSIVE ENGAGEMENT, ENERGY STORAGE MEANS CONNECTED TO SAID FACILITIES FOR STRIKING AN ARC AND PASSING A CURRENT BETWEEN SAID ELEMENTS, MEANS COUPLED TO SAID ENERGY STORAGE MEANS FOR GENERATING A FIRST PULSE INDICATIVE OF THE CURRENT PULSE THROUGH SAID ELEMENTS DURING SAID STRIKING OF SAID ARC AND A SECOND PULSE INDICATIVE OF THE CURRENT PULSE THROUGH SAID ELEMENTS DURING SAID PERCUSSIVE ENGAGEMENT, MEANS COUPLED TO SAID GENERATING MEANS FOR DELAYING SAID FIRST PULSE A PREDETERMINED DURATION, AND MEANS RESPONSIVE ONLY TO THE COINCIDENCE OF SAID DELAYING PULSE AND SAID DELAYED FIRST PULSE FOR PRODUCING A THIRD PULSE INDICATIVE OF A CHARACTERISTIC OF SAID WELD.
Claim 2
Dependent Claim
118 words
IN A PERCUSSION WELDING DEVICE HAVING FACILITIES FOR MOVING A PAIR OF ELEMENTS INTO PERCUSSIVE ENGAGEMENT, ENERGY STORAGE MEANS CONNECTED TO SAID FACILITIES FOR STRIKING AN ARC AND PASSING A CURRENT BETWEEN SAID ELEMENTS, MEANS COUPLED TO SAID ENERGY STORAGE MEANS FOR GENERATING A FIRST PULSE INDICATIVE OF THE CURRENT PULSE THROUGH SAID ELEMENTS DURING SAID STRIKING OF SAID ARC AND A SECOND PULSE INDICATIVE OF THE CURRENT PULSE THROUGH SAID ELEMENTS DURING SAID PERCUSSIVE ENGAGEMENT, MEANS COUPLED TO SAID GENERATING MEANS FOR DELAYING SAID FIRST PULSE A PREDETERMINED DURATION, AND MEANS RESPONSIVE ONLY TO THE COINCIDENCE OF SAID DELAYING PULSE AND SAID DELAYED FIRST PULSE FOR PRODUCING A THIRD PULSE INDICATIVE OF A CHARACTERISTIC OF SAID WELD.
References Cited (Backward Citations)
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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) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |