US3284690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controlled power supply circuit
Assignee: Duo Fast Corp
•
Filing: 1963-05-22
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Granted: 1966-11-08
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Expires: 1983-05-22
Abstract
No abstract record available.
Inventors
- 👤 Joseph S Naber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:23
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/72; H03K17/725; H03K17/722; H03K17/723
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A CIRCUIT FOR CONTROLLING AN ELECTRICALLY OPERATED TOOL COMPRISING A POTENTIAL SOURCE HAVING A COMMON CONDUCTOR AND AT LEAST TWO PHASE CONDUCTORS, WINDING MEANS FOR OPERATING THE TOOL, A PLURALITY OF CONTROLLED CONDUCTION DEVICES EACH HAVING A CONTROL ELECTRODE, EACH OF THE DEVICES CONNECTING THE WINDING MEANS BETWEEN THE COMMON CONDUCTOR AND A DIFFERENT ONE OF THE PHASE CONDUCTORS, AND CONTROL CIRCUIT MEANS CONNECTED TO THE CONTROL ELECTRODES AND OPERATIVE TO PLACE THE DEVICES IN CONDUCTION AT SPACED TIMES SO THAT THE WINDING MEANS IS CONTINUOUSLY ENERGIZED BY THE POTENTIAL SOURCE.
Claim 2
Dependent Claim
91 words
A CIRCUIT FOR CONTROLLING AN ELECTRICALLY OPERATED TOOL COMPRISING A POTENTIAL SOURCE HAVING A COMMON CONDUCTOR AND AT LEAST TWO PHASE CONDUCTORS, WINDING MEANS FOR OPERATING THE TOOL, A PLURALITY OF CONTROLLED CONDUCTION DEVICES EACH HAVING A CONTROL ELECTRODE, EACH OF THE DEVICES CONNECTING THE WINDING MEANS BETWEEN THE COMMON CONDUCTOR AND A DIFFERENT ONE OF THE PHASE CONDUCTORS, AND CONTROL CIRCUIT MEANS CONNECTED TO THE CONTROL ELECTRODES AND OPERATIVE TO PLACE THE DEVICES IN CONDUCTION AT SPACED TIMES SO THAT THE WINDING MEANS IS CONTINUOUSLY ENERGIZED BY THE POTENTIAL SOURCE.
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) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |