US3296440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shutdown reactivity meter for measuring the subcritical reactivity in a nuclear reactor
Assignee: Individual
•
Filing: 1964-06-24
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Granted: 1967-01-03
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Expires: 1984-06-24
Abstract
No abstract record available.
Inventors
- 👤 Mortimer A Schultz
- 👤 Vincent G Shaw
- 👤 Bluestein Irwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:41
CPC Classifications
G; G21; G21C; G21C17/00; G21C17/10; G21C17/104; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
131 words
A SHUTDOWN REACTIVITY METER FOR USE WITH A NUCLEAR FISSION REACTOR IN A SUBCRITICAL STATE COMPRISING MEANS FOR PRODUCING AN A.C. SIGNAL MODULATED BY VARIATIONS IN THE NEUTRON DENSITY ADJACENT THE CORE OF SAID REACTOR, ADJUSTABLE FIRST MEANS FOR ATTENUATING SAID SIGNAL, MEANS FOR AMPLIFYING THE ATTENUATED SIGNAL, MEANS FOR PASSING AND AMPLIFYING A HIGH FREQUENCY BAND COMPONENT OF THE AMPLIFIED SIGNAL, MEANS FOR PASSING AND AMPLIFYING A LOW FREQUENCY BAND COMPONENT OF THE AMPLIFED SIGNAL, ADJUSTABLE SECOND MEANS FOR ATTENUATING TH AMPLIFIED LOW FREQUENCY BAND SIGNAL, MEANS FOR INTEGRATING THE ATTENUATED LOW FREQUENCY BAND SIGNAL, MEANS IN RESPONSE TO THE INTEGRATED LOW FREQUENCY BAND SIGNAL TO ADJUST AUTOMATICALLY THE FIRST ATTENUATING MEANS TO INCREASE THE ATTENUATION OF THE MODULATED A.C. SIGNAL TO MAINTAIN THE LOW FREQUENCY BAND SIGNAL AMPLITUDE AT
References Cited (Backward Citations)
US2932743A
Cited
US3069545A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |