Patent US3319040A successfully refreshed from Google Patents.
US3319040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High frequency welding and shaping of metal parts
Assignee: AMF Inc
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Filing: 1964-04-09
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Granted: 1967-05-09
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Expires: 1984-04-09
Abstract
No abstract record available.
Inventors
- 👤 Wallace C Rudd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:50
CPC Classifications
B; B23; B23K; B23K13/00; B23K13/01; B23K13/02; Y; Y10; Y10S; Y10S65/00; Y10S65/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
METHOD FOR FORMING A SUCCESSION OF WELDS OF A PREDETERMINED SHORT LENGTH AND AT PREDETERMINED SPACED POSITIONS ALONG BETWEEN OPPOSED SURFACES OF TWO METAL PORTIONS, WHICH METHOD COMPRISES: ADVANCING SAID PORTIONS AT A RATE OF MANY METERS PER MINUTE WITH THEIR SAID SURFACES PASSING ALONG THE LINE OF THE DESIRED WELDS AND PAST A WELD POINT, THE ADVANCING PORTIONS FORMING THEREBETWEEN A V GAP WITH ITS APEX AT SAID POINT; FIRMLY RETAINING SAID PORTIONS WITH THEIR SURFACES IN CONTACT UNDER PRESSURE AS THEY PASS SAID POINT; CAUSING SHORT PULSES OF CURRENT WHICH HAS A FREQUENCY OF ABOUT 50,000 CYCLES PER SECOND OR HIGHER TO FLOW, DURING EACH OF A SUCCESSION OF PREDETERMINED INTERVALS, ALONG ON SAID SURFACES TO AND FROM SAID WELD POINT FROM OPPOSED POINTS LOCATED AT SAID SURFACES AT A SUBSTANTIAL DISTANCE IN ADVANCE OF THE WELD POINT; AND CORRELATING
Claim 2
Dependent Claim
142 words
METHOD FOR FORMING A SUCCESSION OF WELDS OF A PREDETERMINED SHORT LENGTH AND AT PREDETERMINED SPACED POSITIONS ALONG BETWEEN OPPOSED SURFACES OF TWO METAL PORTIONS, WHICH METHOD COMPRISES: ADVANCING SAID PORTIONS AT A RATE OF MANY METERS PER MINUTE WITH THEIR SAID SURFACES PASSING ALONG THE LINE OF THE DESIRED WELDS AND PAST A WELD POINT, THE ADVANCING PORTIONS FORMING THEREBETWEEN A V GAP WITH ITS APEX AT SAID POINT; FIRMLY RETAINING SAID PORTIONS WITH THEIR SURFACES IN CONTACT UNDER PRESSURE AS THEY PASS SAID POINT; CAUSING SHORT PULSES OF CURRENT WHICH HAS A FREQUENCY OF ABOUT 50,000 CYCLES PER SECOND OR HIGHER TO FLOW, DURING EACH OF A SUCCESSION OF PREDETERMINED INTERVALS, ALONG ON SAID SURFACES TO AND FROM SAID WELD POINT FROM OPPOSED POINTS LOCATED AT SAID SURFACES AT A SUBSTANTIAL DISTANCE IN ADVANCE OF THE WELD POINT; AND CORRELATING
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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) | 1970-05-08 | 1970-11-07 | 1971-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-08 | 1974-11-07 | 1975-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-08 | 1978-11-07 | 1979-05-09 | $7700.00 | Window Closed / Lapsed |