US3588856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Failure warning system
Assignee: General Electric Co
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Filing: 1968-07-17
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Granted: 1971-06-28
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Expires: 1988-07-17
Abstract
Abstract AN INDICATING INSTRUMENT FAILURE WARNING CIRCUIT FOR ENERGIZING A FAILURE WARNING MECHANISM. A TIMING CIRCUIT IS RESPONSIVE TO A DECREASE IN OR A PRESENCE OF DIVERSE CONDITION SIGNALS TO TURN OFF A SWITCHING TRANSISTOR. A DECREASE IN THE POWER SUPPLY VOLTAGE CAUSES A ZENER DIODE TO BLOCK BASE CURRENT TO THE SWITCHING TRANSMITOR THEREBY TURNING IT OFF. A VOLTAGE DECREASE AT A POWER SUPPLY ENERGIZING THE FAILURE WARNING MECHANISM OR TURNING OFF THE SWITCHING TRANSISTOR PRODUCES A FAILURE WARNING.
Inventors
- 👤 Douglas M Bauer
- 👤 Martin J Nagel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:02
CPC Classifications
G; G08; G08B; G08B5/00; G08B5/22; G08B5/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |