Patent US3142747A successfully refreshed from Google Patents.
US3142747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric arc welding
Assignee: Airco Inc
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Filing: 1961-04-17
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Granted: 1964-07-28
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Expires: 1981-04-17
Abstract
No abstract record available.
Inventors
- 👤 William W Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:02
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
THE METHOD OF ARC WELDING WORK COMPRISING A PAIR OF MEMBERS ALONG A GROOVE THEREBETWEEN WHOSE ROOT OPENING IS CHARACTERIZED BY AT LEAST ONE LOCAL DIMINUTION WHILE MAINTAINING PROPER ROOT PENETRATION OF THE WELD THROUGHOUT THE GROOVE, WHICH COMPRISES MOVING THE EXTREMITY OF AN ELONGATED CONSUMABLE ELECTRODE ALONG THE GROOVE WHILE FEEDING THE ELECTRODE TO THE WORK AT RATES WITHIN SUCH A RANGE, AND WITH SUCH INDUCTIVELY IMPRESSED VOLTAGE ON THE ELECTRODE RELATIVE TO THE WORK, THAT THE ELECTRODE AND A WELD POOL ON THE WORK MAKE REPETITIVE SHORT-CIRCUITING CONTACTS WITH EACH OTHER AND AN ARC BETWEEN THE ELECTRODE AND THE WORK OCCURS ONLY IN THE TIME INTERVALS BETWEEN SUCH CONTACTS, MAINTAINING THE RATE OF FEED OF THE ELECTRODE WHEN AWAY FROM ANY SUCH DIMINUTION AT SUBSTANTIALLY LESS THAN THE MAXIMUM OF SAID RANGE, AND AT SAID DIMINUTION TEMPORARILY INCREASING WITHIN SAID RANGE THE RATE OF FEED OF THE ELECTRODE.
Claim 2
Independent Claim
150 words
THE METHOD OF ARC WELDING WORK COMPRISING A PAIR OF MEMBERS ALONG A GROOVE THEREBETWEEN WHOSE ROOT OPENING IS CHARACTERIZED BY AT LEAST ONE LOCAL DIMINUTION WHILE MAINTAINING PROPER ROOT PENETRATION OF THE WELD THROUGHOUT THE GROOVE, WHICH COMPRISES MOVING THE EXTREMITY OF AN ELONGATED CONSUMABLE ELECTRODE ALONG THE GROOVE WHILE FEEDING THE ELECTRODE TO THE WORK AT RATES WITHIN SUCH A RANGE, AND WITH SUCH INDUCTIVELY IMPRESSED VOLTAGE ON THE ELECTRODE RELATIVE TO THE WORK, THAT THE ELECTRODE AND A WELD POOL ON THE WORK MAKE REPETITIVE SHORT-CIRCUITING CONTACTS WITH EACH OTHER AND AN ARC BETWEEN THE ELECTRODE AND THE WORK OCCURS ONLY IN THE TIME INTERVALS BETWEEN SUCH CONTACTS, MAINTAINING THE RATE OF FEED OF THE ELECTRODE WHEN AWAY FROM ANY SUCH DIMINUTION AT SUBSTANTIALLY LESS THAN THE MAXIMUM OF SAID RANGE, AND AT SAID DIMINUTION TEMPORARILY INCREASING WITHIN SAID RANGE THE RATE OF FEED OF THE ELECTRODE.
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) | 1967-07-28 | 1968-01-27 | 1968-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-28 | 1972-01-27 | 1972-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-28 | 1976-01-27 | 1976-07-28 | $7700.00 | Window Closed / Lapsed |