US3264427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric circuit protective device with energy diverting means
Assignee: General Electric Co
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Filing: 1962-04-16
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Granted: 1966-08-02
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Expires: 1982-04-16
Abstract
No abstract record available.
Inventors
- 👤 Ralph L Hurtle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:33
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/10; H01H71/00; H01H71/10; H01H71/12; H01H71/24; H01H71/2472; H01H71/40; H01H87/00; H02; H02H; H02H3/00; H02H3/02; H02H3/025; H01H71/2454
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
AN ELECTRIC CIRCUIT PROTECTIVE DEVICE COMPRISING (A) AT LEAST ONE PAIR OF RELATIVELY SEPARABLE CONTACTS, (B) MAGNETICALLY OPERABLE MEANS FOR CAUSING SEPARATION OF SAID CONTACTS, (C) A REPETITIVELY OPERABLE CURRENT LIMITING DEVICE CONNECTED ELECTRICALLY IN PARALLEL WITH SAID MAGNETICALLY OPERABLE MEANS, (D) SAID CURRENT LIMITING DEVICE INCLUDING A CONDUCTIVE MEDIUM HAVING A RELATIVELY LOW ELECTRICAL RESISTANCE UNDER NORMAL OPERATING CONDITIONS AND SUDDENLY AND REVERSIBLY CHANGING TO RELATIVELY HIGH RESISTANCE UPON THE OCCURRENCE OF PREDETERMINED CURRENT CONDITIONS THERETHROUGH WITHOUT PERMANENTLY INTERRUPTING CURRENT THERETHROUGH.
Claim 2
Dependent Claim
82 words
AN ELECTRIC CIRCUIT PROTECTIVE DEVICE COMPRISING (A) AT LEAST ONE PAIR OF RELATIVELY SEPARABLE CONTACTS, (B) MAGNETICALLY OPERABLE MEANS FOR CAUSING SEPARATION OF SAID CONTACTS, (C) A REPETITIVELY OPERABLE CURRENT LIMITING DEVICE CONNECTED ELECTRICALLY IN PARALLEL WITH SAID MAGNETICALLY OPERABLE MEANS, (D) SAID CURRENT LIMITING DEVICE INCLUDING A CONDUCTIVE MEDIUM HAVING A RELATIVELY LOW ELECTRICAL RESISTANCE UNDER NORMAL OPERATING CONDITIONS AND SUDDENLY AND REVERSIBLY CHANGING TO RELATIVELY HIGH RESISTANCE UPON THE OCCURRENCE OF PREDETERMINED CURRENT CONDITIONS THERETHROUGH WITHOUT PERMANENTLY INTERRUPTING CURRENT THERETHROUGH.
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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) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |