Patent US3267382A successfully refreshed from Google Patents.
US3267382A
Expired / Lapsed
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Slope and heat control circuit with inhibit means
Assignee: Weltronic Co
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Filing: 1963-09-16
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Granted: 1966-08-16
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Expires: 1983-09-16
Abstract
No abstract record available.
Inventors
- 👤 Adem Abdulahat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:23
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/24; B23K11/25; B23K11/252
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
130 words
A SLOPE CONTROL CIRCUIT FOR WELDING APPARATUS PRODUCING A VARIABLE WELD CURRENT DURING DIFFERENT PERIODS OF A WELD CYCLE COMPRISING, MEANS DEFINING AN INTERVAL OF CONTROLLABLE LENGTH, MEANS FOR GENERATING A CONTROL SIGNAL WHICH PROGRESSIVELY VARIES IN MAGNITUDE DURING AT LEAST ONE PORTION OF SAID WELD CYCLE AND WHICH CONFORMS SUBSTANTIALLY TO THE DESIRED CURRENT OUTPUT OVER THE ENTIRE WELD CYCLE, MEANS FOR GENERATING AN INITIATING SIGNAL WHICH BUILDS UP WITH TIME, MEANS FOR CUMULATIVELY COMBINING SAID VARIABLE CONTROL SIGNAL AND SAID TIME DEPENDENT INITIATING SIGNAL TO PRODUCE AN INTERVAL CONTROL SIGNAL OF PREDETERMINED AMPLITUDE WHICH CAN OCCUR AT ANY TIME DURING THE INTERVAL DEPENDING UPON THE CONCURRENT MAGNITUDE OF SAID CONTROL SIGNAL, SAID INTERVAL DEFINING MEANS BEING RESPONSIVE TO SAID INTERVAL CONTROL SIGNAL TO ACCORDINGLY CONTROL THE LENGTH THEREOF.
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) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |