Patent US3223590A successfully refreshed from Google Patents.
US3223590A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric protection system for nuclear reactors
Assignee: Siemens Schuckertwerke AG
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Filing: 1963-05-28
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Granted: 1965-12-14
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Expires: 1983-05-28
Abstract
No abstract record available.
Inventors
- 👤 Troeger Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:09
CPC Classifications
G; G21; G21D; G21D3/00; G21D3/04; G21C; G21C7/00; G21C7/36; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A REACTOR SAFETY CIRCUIT COMPRISING THREE PROE MEANS FOR SEPARATELY RESPONDING TO THE SAME REACTOR CONDITION TO BE SENSED, EACH OF SAID THREE PROBE MEANS HAVING THREE CONTACTS, THREE LINE MEANS IN MUTUALLY PARALLEL RELATION EACH INCLUDING ONE CONTACT FROM EACHTRIO OF PROBE MEANS, EACH LINE MEANS FORMING TWO PARALLEL BRANCHES AND HAVING A RELAY COIL IN SERIES WITH SAID PARALLEL BRANCHES, THE THREE CONTACTS IN EACH LINE MEANS BEING DISTRIBUTED AMONG THE BRANCHES OF THE RESPECTIVE LINE MEANS IN A MANNER DIFFERING FROM THE DISTRIBUTION IN THE BRANCHES OF THE OTHER LINE MEANS, AND RELAY SWITCHES RESPONDING TO THE RELAY COILS AND ADAPTED TO BE SERIES CONNECTED BETWEEN A REACTOR CONTROL AND A SOURCE SO AS TO CUT OFF THE REACTOR IF TWO OUT OF THREE OF SAID RELAY COILS ARE UNENERGIZED, SAID BRANCHES EACH INCLUDING LOW INDUCTANCE CHECK REALY MEANS.
Claim 2
Dependent Claim
142 words
A REACTOR SAFETY CIRCUIT COMPRISING THREE PROE MEANS FOR SEPARATELY RESPONDING TO THE SAME REACTOR CONDITION TO BE SENSED, EACH OF SAID THREE PROBE MEANS HAVING THREE CONTACTS, THREE LINE MEANS IN MUTUALLY PARALLEL RELATION EACH INCLUDING ONE CONTACT FROM EACHTRIO OF PROBE MEANS, EACH LINE MEANS FORMING TWO PARALLEL BRANCHES AND HAVING A RELAY COIL IN SERIES WITH SAID PARALLEL BRANCHES, THE THREE CONTACTS IN EACH LINE MEANS BEING DISTRIBUTED AMONG THE BRANCHES OF THE RESPECTIVE LINE MEANS IN A MANNER DIFFERING FROM THE DISTRIBUTION IN THE BRANCHES OF THE OTHER LINE MEANS, AND RELAY SWITCHES RESPONDING TO THE RELAY COILS AND ADAPTED TO BE SERIES CONNECTED BETWEEN A REACTOR CONTROL AND A SOURCE SO AS TO CUT OFF THE REACTOR IF TWO OUT OF THREE OF SAID RELAY COILS ARE UNENERGIZED, SAID BRANCHES EACH INCLUDING LOW INDUCTANCE CHECK REALY MEANS.
References Cited (Backward Citations)
US2973458A
Cited
US3115451A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |