Patent US3086394A successfully refreshed from Google Patents.
US3086394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Take-off monitor
Assignee: RTX Corp
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Filing: 1959-01-12
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Granted: 1963-04-23
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Expires: 1979-01-12
Abstract
No abstract record available.
Inventors
- 👤 William C Peck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:52
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/0083
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
109 words
APPARATUS TO ASCERTAIN EARLY IN AIRPLANE TAKE-OFF ROLL WHETHER THE AIRPLANE WILL BE AIRBORNE AT DESIRED TAKE-OFF POINT COMPRISING MEANS TO ASCERTAIN AIRPLANE GROUND VELOCITY, MEANS TO ASCERTAIN AIRPLANE ACCELERATION, MEANS TO DETERMINE THE REMAINING RUNWAY TIME OF THE TOTAL RUNWAY TIME CALCULATED TO ARRIVE AT THE DESIRED TAKE-OFF POINT, MEANS TO DIFFERENTIATE SAID VELOCITY AND ACCELERATION AND MULTIPLY THE SUM OF SAID DIFFERENTIAL VELOCITY AND ACCELERATION BY SAID REMAINING RUNWAY TIME TO OBTAIN A PRODUCT, MEANS TO ADD SAID PRODUCT AND SAID VELOCITY TO OBTAIN A PREDICTED DESIRED TAKE-OFF POINT VELOCITY, AND SIGNAL MEANS TO COMPARE SAID PREDICTED DESIRED TAKE-OFF POINT VELOCITY TO REQUIRED AIRPLANE VELOCITY FOR TAKE-OFF.
References Cited (Backward Citations)
US2807165A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-22 | 1966-10-22 | 1967-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-22 | 1970-10-22 | 1971-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-22 | 1974-10-22 | 1975-04-23 | $7700.00 | Window Closed / Lapsed |