US3588435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid-state heat control and initiating circuit for a resistance welder control
Assignee: Schneider Electric USA Inc
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Filing: 1968-05-28
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Granted: 1971-06-28
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Expires: 1988-05-28
Abstract
Abstract A SOLID-STATE CONTROL FOR A RESISTANCE WELDER WHICH WILL APREVENT FALSE TRIPPING OF A SOLID-STATE LOGIC MEMORY IN RESPONSE TO BOUNCE OF THE CONTACTS OF AN INITIATING SWITCH WHICH INITIATES AND TERMINATES WELDING CURRENT FLOW AND A HEAT CONTROL CIRCUIT THAT WILL PROVIDE EQUAL OPPOSITE POLARITY HALF CYCLES OF WELDING CURRENT FLOW UNDER VARYING AMBIENT TEMPERATURE CONDITIONS.
Inventors
- 👤 James J Eckl
- 👤 James Thomas Griffin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:52
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/24; B23K11/25; B23K11/252
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |