US3401549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Failure monitor for attitude reference systems
Assignee: Unisys Corp
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Filing: 1966-08-09
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Granted: 1968-09-17
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Expires: 1986-08-09
Abstract
No abstract record available.
Inventors
- 👤 Miller Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:06
CPC Classifications
G; G01; G01C; G01C19/00; G01C19/02; G01C19/44; G01C25/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
IN GYROSCOPIC APPARATUS, (A) FIRST, SECOND AND THIRD SUBSTANTIALLY IDENTICAL GYROSCOPIC MEANS FOR PROVIDING FIRST, SECOND AND THIRD SUBSTANTIALLY IDENTICAL ATTITUDE SIGNALS RESPECTIVELY AS WELL AS FIRST, SECOND AND THIRD IN-LINE MONITORING SIGNALS, RESPECTIVELY, DURING NORMAL OPERATION, (B) FIRST AND SECOND ATTITUDE INDICATING MEANS, (C) FIRST AND SECOND SERVO CONTROL MEANS NORMALLY COUPLED BETWEEN SAID FIRST AND SECOND GYROSCOPIC MEANS AND SAID FIRST AND SECOND ATTITUDE INDICATING MEANS RESPECTIVELY FOR PROVIDING REDUNDANT FIRST AND SECOND ATTITUDE INDICATING CHANNELS, (D) FIRST COMPARISON MEANS RESPONSIVE EFFECTIVELY TO SAID FIRST AND THIRD ATTITUDE SIGNALS FOR PROVIDING A FRIST COMPARISON SIGNAL WHEN THE DIFFERENCE THEREBETWEEN EXCEEDS A FIRST PREDETERMINED THRESHOLD, (E) SECOND COMPARISON MEANS RESPONSIVE EFFECTIVELY TO SAID SECOND AND THIRD ATTITUDE SIGNALS FOR PROVIDING A SECOND COMPARISION SIGNAL WHEN THE DIFFERENCE THEREBETWEEN EXCEEDS A SECOND PREDETERMINED THRESHOLD, AND (F) MEANS INCLUDING GATING MEANS RESPONSIVE TO SAID COMPARISION SIGNALS AND SAID IN-LINE MONITORING SIGNALS FOR PROVIDING DISCRETE MEASURES INDICATIVE OF THE MALFUNCTIONING PORTION OF SAID APPARATUS.
Claim 2
Dependent Claim
162 words
IN GYROSCOPIC APPARATUS, (A) FIRST, SECOND AND THIRD SUBSTANTIALLY IDENTICAL GYROSCOPIC MEANS FOR PROVIDING FIRST, SECOND AND THIRD SUBSTANTIALLY IDENTICAL ATTITUDE SIGNALS RESPECTIVELY AS WELL AS FIRST, SECOND AND THIRD IN-LINE MONITORING SIGNALS, RESPECTIVELY, DURING NORMAL OPERATION, (B) FIRST AND SECOND ATTITUDE INDICATING MEANS, (C) FIRST AND SECOND SERVO CONTROL MEANS NORMALLY COUPLED BETWEEN SAID FIRST AND SECOND GYROSCOPIC MEANS AND SAID FIRST AND SECOND ATTITUDE INDICATING MEANS RESPECTIVELY FOR PROVIDING REDUNDANT FIRST AND SECOND ATTITUDE INDICATING CHANNELS, (D) FIRST COMPARISON MEANS RESPONSIVE EFFECTIVELY TO SAID FIRST AND THIRD ATTITUDE SIGNALS FOR PROVIDING A FRIST COMPARISON SIGNAL WHEN THE DIFFERENCE THEREBETWEEN EXCEEDS A FIRST PREDETERMINED THRESHOLD, (E) SECOND COMPARISON MEANS RESPONSIVE EFFECTIVELY TO SAID SECOND AND THIRD ATTITUDE SIGNALS FOR PROVIDING A SECOND COMPARISION SIGNAL WHEN THE DIFFERENCE THEREBETWEEN EXCEEDS A SECOND PREDETERMINED THRESHOLD, AND (F) MEANS INCLUDING GATING MEANS RESPONSIVE TO SAID COMPARISION SIGNALS AND SAID IN-LINE MONITORING SIGNALS FOR PROVIDING DISCRETE MEASURES INDICATIVE OF THE MALFUNCTIONING PORTION OF SAID APPARATUS.
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) | 1971-09-17 | 1972-03-18 | 1972-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-17 | 1976-03-18 | 1976-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-17 | 1980-03-18 | 1980-09-17 | $7700.00 | Window Closed / Lapsed |