Patent US1772273A successfully refreshed from Google Patents.
Patent US3305699A successfully refreshed from Google Patents.
US3305699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective circuit for superconductive loads
Assignee: General Electric Co
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Filing: 1965-03-08
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Granted: 1967-02-21
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Expires: 1985-03-08
Abstract
No abstract record available.
Inventors
- 👤 Donald L Watrous
- 👤 Stephen H Minnich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:29
CPC Classifications
H; H02; H02H; H02H7/00; H02H7/001; Y; Y02; Y02E; Y02E40/00; Y02E40/60; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/85
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A PROTECTIVE CIRCUIT FOR A SUPERCONDUCTIVE LOAD ADAPTED TO BE CONNECTED TO A SOURCE OF ELECTRIC POTENTIAL AND ENERGIZED THEREBY COMPRISING: (A) LOAD CURRENT CARRYING FAST ACTING ELECTRONIC CONTROLLED CONDUCTING MEANS HAVING A CONDUCTING STATE AND A NON-CONDUCTING STATE, CONNECTED IN SERIES WITH SAID SUPERCONDUCTIVE LOAD AND THE POWER SUPPLY; (B) MEANS CONNECTED TO THE LOAD CURRENT CARRYING FAST ACTING ELECTRONIC CONTROLLED CONDUCTING MEANS TO SET SAID MEANS TO A CONDUCTIVE STATE; (C) MEANS TO SENSE A CURRENT DECREASE IN SAID SUPERCONDUCTIVE LOAD; (D) FAST ACTING ELECTRON CONTROLLED CONDUCTING COMMUTATING MEANS CONNECTED TO SAID LOAD CURRENT CARRYING MEANS AND CONNECTED TO AND CONTROLLED BY SAID SENSING MEANS TO SET SAID LOAD CURRENT CARRYING MEANS TO A NON-CONDUCTING STATE, AND (E) MEANS CONNECTED IN PARALLEL WITH SID SUPERCONDUCTIVE LOAD TO DISSIPATE ENERGY STORED THEREIN SO AS TO LIMIT THE VOLTAGE INDUCED IN SAID SUPERCONDUCTIVE LOAD UPON THE LOAD CURRENT CARRYING MEANS BEING RENDERED NON-CONDUCTIVE.
Claim 2
Dependent Claim
153 words
A PROTECTIVE CIRCUIT FOR A SUPERCONDUCTIVE LOAD ADAPTED TO BE CONNECTED TO A SOURCE OF ELECTRIC POTENTIAL AND ENERGIZED THEREBY COMPRISING: (A) LOAD CURRENT CARRYING FAST ACTING ELECTRONIC CONTROLLED CONDUCTING MEANS HAVING A CONDUCTING STATE AND A NON-CONDUCTING STATE, CONNECTED IN SERIES WITH SAID SUPERCONDUCTIVE LOAD AND THE POWER SUPPLY; (B) MEANS CONNECTED TO THE LOAD CURRENT CARRYING FAST ACTING ELECTRONIC CONTROLLED CONDUCTING MEANS TO SET SAID MEANS TO A CONDUCTIVE STATE; (C) MEANS TO SENSE A CURRENT DECREASE IN SAID SUPERCONDUCTIVE LOAD; (D) FAST ACTING ELECTRON CONTROLLED CONDUCTING COMMUTATING MEANS CONNECTED TO SAID LOAD CURRENT CARRYING MEANS AND CONNECTED TO AND CONTROLLED BY SAID SENSING MEANS TO SET SAID LOAD CURRENT CARRYING MEANS TO A NON-CONDUCTING STATE, AND (E) MEANS CONNECTED IN PARALLEL WITH SID SUPERCONDUCTIVE LOAD TO DISSIPATE ENERGY STORED THEREIN SO AS TO LIMIT THE VOLTAGE INDUCED IN SAID SUPERCONDUCTIVE LOAD UPON THE LOAD CURRENT CARRYING MEANS BEING RENDERED NON-CONDUCTIVE.
References Cited (Backward Citations)
US3270247A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |