Patent US3283573A successfully refreshed from Google Patents.
US3283573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft instruments
Assignee: S Smith and Sons Ltd
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Filing: 1964-05-14
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Granted: 1966-11-08
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Expires: 1984-05-14
Abstract
No abstract record available.
Inventors
- 👤 Bishop Roger Ivan
- 👤 Kendall Eric Raymond
- 👤 Palmer Daphne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:09
CPC Classifications
G; G01; G01C; G01C23/00; E; E21; E21B; E21B43/00; E21B43/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
AN AIRCRAFT INSTRUMENT COMPRISING FIRST MEANS FOR PROVIDING A SIGNAL DEPENDENT UPON FORWARD ACCELERATION OF THE AIRCRAFT, SECOND MEANS FOR PROVIDING A SIGNAL DEPENDENT UPON RATE OF CHANGE OF PITCH ATTITUDE OF THE AIRCRAFT, AND THIRD MEANS RESPONSIVE TO BOTH SIGNALS TO PROVIDE AN INDICATION DEPENDENT UPON DIFFERENCE BETWEEN SAID RATE OF CHANGE OF PITCH ATTITUDE AND A FUNCTION DEPENDENT UPON SAID ACCELERATION, SAID THIRD MEANS INCLUDING TWO MOVABLE INDICES, AND MEANS FOR POSITIONING THE
Claim 2
Dependent Claim
75 words
AN AIRCRAFT INSTRUMENT COMPRISING FIRST MEANS FOR PROVIDING A SIGNAL DEPENDENT UPON FORWARD ACCELERATION OF THE AIRCRAFT, SECOND MEANS FOR PROVIDING A SIGNAL DEPENDENT UPON RATE OF CHANGE OF PITCH ATTITUDE OF THE AIRCRAFT, AND THIRD MEANS RESPONSIVE TO BOTH SIGNALS TO PROVIDE AN INDICATION DEPENDENT UPON DIFFERENCE BETWEEN SAID RATE OF CHANGE OF PITCH ATTITUDE AND A FUNCTION DEPENDENT UPON SAID ACCELERATION, SAID THIRD MEANS INCLUDING TWO MOVABLE INDICES, AND MEANS FOR POSITIONING THE
References Cited (Backward Citations)
US3200642A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |