US3219939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the detection of excursions in a reactor
Assignee: United Kingdom Atomic Energy Authority
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Filing: 1961-07-25
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Granted: 1965-11-23
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Expires: 1981-07-25
Abstract
No abstract record available.
Inventors
- 👤 Vincent Charles Holmes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:15
CPC Classifications
H; H03; H03K; H03K9/00; H03K9/06; G; G21; G21C; G21C17/00; G21C17/14; G21D; G21D3/00; G21D3/04; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
APPARATUS FOR THE RAPID DETECTION OF EXCURSIONS IN THE MEAN PULSE-RATE OF A SUCCESSION OF RANDOMLY OCCURRING PULSES COMPRISING A PLURALITY OF PULSE RATEMETER CIRCUITS HAVING THEIR INPUTS CONNECTED TO RECEIVE SAID PULSES AND TO PRODUCE OUTPUTS PROPORTIONAL TO THE PULSE-RATE, SAID CIRCUITS HAVING TIME-CONSTANTS MATCHED TO SUCCESSIVE VALUES WITHIN A RANGE OF RATES OF EXCURSION DESIRED TO BE DETECTED, A CORRESPONDING PLURALITY OF BIASING CIRCUITS EACH ASSOCIATED WITH ONE OF SAID RATEMETER CIRCUITS, EACH BIASING CIRCUIT INCLUDING AN INTEGRATING CIRCUIT HAVING AN OUTPUT PROPORTIONAL TO THE PULSE-RATE BUT INTEGRATED WITH A LONGER TIME-CONSTANT THAN THE OUTPUT OF ITS ASSOCIATED RATEMETER CIRCUIT TO PROVIDE A BIAS VARYING WITH THE MEAN PULSE-RATE PRIOR TO AN EXCURSION, MEANS FOR COMPARING THE OUTPUT OF EACH RATEMETER CIRCUIT WITH THE OUTPUT OF ITS ASSOCIATED BIASING CIRCUIT, AND DISCRIMINATOR MEANS FOR DETECTING WHEN THE OUTPUT OF ANY RATEMETER CIRCUIT DIFFERS FROM THAT OF ITS ASSOCIATED BIASING CIRCUIT BY A GIVEN AMOUNT.
Claim 2
Dependent Claim
156 words
APPARATUS FOR THE RAPID DETECTION OF EXCURSIONS IN THE MEAN PULSE-RATE OF A SUCCESSION OF RANDOMLY OCCURRING PULSES COMPRISING A PLURALITY OF PULSE RATEMETER CIRCUITS HAVING THEIR INPUTS CONNECTED TO RECEIVE SAID PULSES AND TO PRODUCE OUTPUTS PROPORTIONAL TO THE PULSE-RATE, SAID CIRCUITS HAVING TIME-CONSTANTS MATCHED TO SUCCESSIVE VALUES WITHIN A RANGE OF RATES OF EXCURSION DESIRED TO BE DETECTED, A CORRESPONDING PLURALITY OF BIASING CIRCUITS EACH ASSOCIATED WITH ONE OF SAID RATEMETER CIRCUITS, EACH BIASING CIRCUIT INCLUDING AN INTEGRATING CIRCUIT HAVING AN OUTPUT PROPORTIONAL TO THE PULSE-RATE BUT INTEGRATED WITH A LONGER TIME-CONSTANT THAN THE OUTPUT OF ITS ASSOCIATED RATEMETER CIRCUIT TO PROVIDE A BIAS VARYING WITH THE MEAN PULSE-RATE PRIOR TO AN EXCURSION, MEANS FOR COMPARING THE OUTPUT OF EACH RATEMETER CIRCUIT WITH THE OUTPUT OF ITS ASSOCIATED BIASING CIRCUIT, AND DISCRIMINATOR MEANS FOR DETECTING WHEN THE OUTPUT OF ANY RATEMETER CIRCUIT DIFFERS FROM THAT OF ITS ASSOCIATED BIASING CIRCUIT BY A GIVEN AMOUNT.
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) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |