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US3115609A
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Signal responsive apparatus
Assignee: Individual
•
Filing: 1960-06-03
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Granted: 1963-12-24
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Expires: 1980-06-03
Abstract
No abstract record available.
Inventors
- 👤 Robert B Stanfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:11
CPC Classifications
G; G21; G21C; G21C7/00; G21C7/36; H; H03; H03F; H03F3/00; H03F3/38; H03F3/387; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
SIGNAL RESPONSIVE APPARATUS COMPRISING, A SOURCE OF A D.-C. REFERENCE CURRENT, A SOURCE OF A MONITORED D.-C. CURRENT, MEANS FOR COMBINING SAID MONITORED AND SAID REFERENCE CURRENTS, A SWITCHING TRANSISTOR, A SOURCE OF AN A.-C. SWITCHING SIGNAL, MEANS FOR APPLYING SAID SWITCHING SIGNAL TO SAID SWITCHING TRANSISTOR TO PERIODICALLY INTERRUPT SAID COMBINED CURRENTS AND PROVIDE A DATA A.-C. SIGNAL FROM SAID SWITCHING TRANSISTOR, MEANS RESPONSIVE TO THE PRESENCE AND ABSENCE OF SAID DATA A.-C. SIGNAL FOR INDICATING NORMAL AND ABNORMAL CONDITIONS RESPECTIVELY, MEANS FOR ESTABLISHING SAID SWITCHING TRANSISTOR RESPONSIVE TO A PREDETERMINED RELATIONSHIP BETWEEN SAID REFERENCE AND MONITORED SIGNALS FOR INTERRUPTING THE DELIVERY OF SAID DATA A.-C. SIGNAL AND THEREBY CAUSING SAID SENSING MEANS TO INDICATE AN ABNORMAL CONDITION.
Claim 2
Dependent Claim
119 words
SIGNAL RESPONSIVE APPARATUS COMPRISING, A SOURCE OF A D.-C. REFERENCE CURRENT, A SOURCE OF A MONITORED D.-C. CURRENT, MEANS FOR COMBINING SAID MONITORED AND SAID REFERENCE CURRENTS, A SWITCHING TRANSISTOR, A SOURCE OF AN A.-C. SWITCHING SIGNAL, MEANS FOR APPLYING SAID SWITCHING SIGNAL TO SAID SWITCHING TRANSISTOR TO PERIODICALLY INTERRUPT SAID COMBINED CURRENTS AND PROVIDE A DATA A.-C. SIGNAL FROM SAID SWITCHING TRANSISTOR, MEANS RESPONSIVE TO THE PRESENCE AND ABSENCE OF SAID DATA A.-C. SIGNAL FOR INDICATING NORMAL AND ABNORMAL CONDITIONS RESPECTIVELY, MEANS FOR ESTABLISHING SAID SWITCHING TRANSISTOR RESPONSIVE TO A PREDETERMINED RELATIONSHIP BETWEEN SAID REFERENCE AND MONITORED SIGNALS FOR INTERRUPTING THE DELIVERY OF SAID DATA A.-C. SIGNAL AND THEREBY CAUSING SAID SENSING MEANS TO INDICATE AN ABNORMAL CONDITION.
References Cited (Backward Citations)
US2964649A
Cited
US2801338A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-23 | 1967-06-24 | 1967-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-23 | 1971-06-24 | 1971-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-23 | 1975-06-24 | 1975-12-24 | $7700.00 | Window Closed / Lapsed |