US3105919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable time delay undervoltage protective circuit
Assignee: General Electric Co
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Filing: 1962-01-19
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Granted: 1963-10-01
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Expires: 1982-01-19
Abstract
No abstract record available.
Inventors
- 👤 Everett W Werts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:46
CPC Classifications
H; H02; H02H; H02H3/00; H02H3/24; H02H3/247
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
AN ADJUSTABLE TIME DELAY UNDERVOLTAGE PROTECTIVE CIRCUIT FOR AN ALTERNATING CURRENT LOAD, COMPRISING A CONTACTOR HAVING AN OPERATING COIL AND A CONTROL CONTACT FOR CONTROLLING ENERGIZATION OF THE LOAD FROM AN ENERGIZING CIRCUIT, RECTIFIER MEANS TO BE CONNECTED FOR ENERGIZATION FROM THE ENERGIZING CIRCUIT FOR THE LOAD, SAID RECTIFIER MEANS HAVING AN OUTPUT CIRCUIT AT WHICH APPEARS A DIRECT VOLTAGE, A RESISTOR CONNECTED IN SERIES CIRCUIT WITH SAID OPERATING COIL WITH THE SERIES CIRCUIT CONNECTED FOR ENERGIZATION FROM SAID RECTIFIER OUTPUT CIRCUIT, AND A CAPACITOR CONNECTED IN ADJUSTABLE CONTACT WITH SAID RESISTOR TO BE CHARGED WITH A VARIABLE DIRECT VOLTAGE FROM SAID RECTIFIER OUTPUT CIRCUIT AND TO DISCHARGED THROUGH A VARIABLE PORTION OF SAID RESISTOR AND THROUGH SAID OPERATING COIL.
Claim 2
Dependent Claim
120 words
AN ADJUSTABLE TIME DELAY UNDERVOLTAGE PROTECTIVE CIRCUIT FOR AN ALTERNATING CURRENT LOAD, COMPRISING A CONTACTOR HAVING AN OPERATING COIL AND A CONTROL CONTACT FOR CONTROLLING ENERGIZATION OF THE LOAD FROM AN ENERGIZING CIRCUIT, RECTIFIER MEANS TO BE CONNECTED FOR ENERGIZATION FROM THE ENERGIZING CIRCUIT FOR THE LOAD, SAID RECTIFIER MEANS HAVING AN OUTPUT CIRCUIT AT WHICH APPEARS A DIRECT VOLTAGE, A RESISTOR CONNECTED IN SERIES CIRCUIT WITH SAID OPERATING COIL WITH THE SERIES CIRCUIT CONNECTED FOR ENERGIZATION FROM SAID RECTIFIER OUTPUT CIRCUIT, AND A CAPACITOR CONNECTED IN ADJUSTABLE CONTACT WITH SAID RESISTOR TO BE CHARGED WITH A VARIABLE DIRECT VOLTAGE FROM SAID RECTIFIER OUTPUT CIRCUIT AND TO DISCHARGED THROUGH A VARIABLE PORTION OF SAID RESISTOR AND THROUGH SAID OPERATING COIL.
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) | 1966-09-30 | 1967-04-01 | 1967-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-30 | 1971-04-01 | 1971-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-30 | 1975-04-01 | 1975-10-01 | $7700.00 | Window Closed / Lapsed |