US3105660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic flight control system
Assignee: Unisys Corp
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Filing: 1960-10-04
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Granted: 1963-10-01
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Expires: 1980-10-04
Abstract
No abstract record available.
Inventors
- 👤 Lenefsky Selig
- 👤 John J Morrone
- 👤 Donal R Treffeisen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:50
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/08; G05D1/0808; G05D1/0858; G05D1/04; G05D1/06; G05D1/0607; G05D1/0653; G05D1/0676
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
APPARATUS FOR CONTROLLING THE LATERAL POSITIONING OVER THE EARTH OF A HOVERING VERTICAL TAKE-OFF AND LANDING AIRCRAFT HAVING A VERTICAL GYROSCOPE COMPRISING MEANS FOR VARYING THE DIRECTION OF THE CRAFT RESULTANT THRUST VECTOR, PICK-OFF MEANS OPERABLE WITH THE CONTROL STICK OF SAID CRAFT TO PRODUCE A SIGNAL REPRESENTING THE DISPLACEMENT OF THE STICK, MEANS INDEPENDENT OF SAID VERTICAL GYROSCOPE PRODUCING A SIGNAL REPRESENTING THE GROUND SPEED OF SAID CRAFT, AND SUMMING MEANS RECEIVING BOTH SAID SIGNALS AND PRODUCING A SIGNAL REPRESENTING THEIR ALGEBRAIC SUM, SAID SUM SIGNAL BEING APPLIED TO SAID THRUST DIRECTION VARYING MEANS TO VARY THE RESULTANT THRUST DIRECTION IN PROPORTION TO SAID SUM SIGNAL.
Claim 2
Dependent Claim
107 words
APPARATUS FOR CONTROLLING THE LATERAL POSITIONING OVER THE EARTH OF A HOVERING VERTICAL TAKE-OFF AND LANDING AIRCRAFT HAVING A VERTICAL GYROSCOPE COMPRISING MEANS FOR VARYING THE DIRECTION OF THE CRAFT RESULTANT THRUST VECTOR, PICK-OFF MEANS OPERABLE WITH THE CONTROL STICK OF SAID CRAFT TO PRODUCE A SIGNAL REPRESENTING THE DISPLACEMENT OF THE STICK, MEANS INDEPENDENT OF SAID VERTICAL GYROSCOPE PRODUCING A SIGNAL REPRESENTING THE GROUND SPEED OF SAID CRAFT, AND SUMMING MEANS RECEIVING BOTH SAID SIGNALS AND PRODUCING A SIGNAL REPRESENTING THEIR ALGEBRAIC SUM, SAID SUM SIGNAL BEING APPLIED TO SAID THRUST DIRECTION VARYING MEANS TO VARY THE RESULTANT THRUST DIRECTION IN PROPORTION TO SAID SUM SIGNAL.
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) | 1966-09-30 | 1967-04-01 | 1967-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-30 | 1971-04-01 | 1971-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-30 | 1975-04-01 | 1975-10-01 | $7700.00 | Window Closed / Lapsed |