US3317795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Overcurrent protective means
Assignee: General Electric Co
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Filing: 1964-04-21
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Granted: 1967-05-02
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Expires: 1984-04-21
Abstract
No abstract record available.
Inventors
- 👤 Floyd L Steen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:02
CPC Classifications
H; H02; H02H; H02H3/00; H02H3/08; H02H3/093
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A PROTECTIVE DEVICE COMPRISING: (A) MEANS ADAPTED TO BE COUPLED TO AN ELECTRIC CURRENT CIRCUIT FOR DERIVING THEREFROM AN INPUT SIGNAL REPRESENTATIVE OF CIRCUIT CURRENT; (B) FIRST PERIODICALLY OPERATIVE MEANS CONNECTED TO SAID INPUT SIGNAL DERIVING MEANS AND ARRANGED TO OPERATE WITH A FREQUENCY THAT DEPENDS UPON THE MAGNITUDE OF SAID SIGNAL; (C) SECOND PERIODICALLY OPERATIVE MEANS CONNECTED TO SAID FIRST MEANS FOR PRODUCING, IN SYNCHRONISM WITH OPERATION OF SAID FIRST MEANS, A SUCCESSION OF BRIEF CONTROL PULSES EACH SUBSISTING FOR A PREDETERMINED SUBSTANTIALLY CONSTANT DURATION; (D) ELECTRIC ENERGY STORING MEANS;
Claim 2
Dependent Claim
91 words
A PROTECTIVE DEVICE COMPRISING: (A) MEANS ADAPTED TO BE COUPLED TO AN ELECTRIC CURRENT CIRCUIT FOR DERIVING THEREFROM AN INPUT SIGNAL REPRESENTATIVE OF CIRCUIT CURRENT; (B) FIRST PERIODICALLY OPERATIVE MEANS CONNECTED TO SAID INPUT SIGNAL DERIVING MEANS AND ARRANGED TO OPERATE WITH A FREQUENCY THAT DEPENDS UPON THE MAGNITUDE OF SAID SIGNAL; (C) SECOND PERIODICALLY OPERATIVE MEANS CONNECTED TO SAID FIRST MEANS FOR PRODUCING, IN SYNCHRONISM WITH OPERATION OF SAID FIRST MEANS, A SUCCESSION OF BRIEF CONTROL PULSES EACH SUBSISTING FOR A PREDETERMINED SUBSTANTIALLY CONSTANT DURATION; (D) ELECTRIC ENERGY STORING MEANS;
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) | 1970-05-01 | 1970-10-31 | 1971-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-01 | 1974-10-31 | 1975-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-01 | 1978-10-31 | 1979-05-02 | $7700.00 | Window Closed / Lapsed |