Patent US3436531A successfully refreshed from Google Patents.
US3436531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Track follower for controlling aircraft flight
Assignee: Northrop Grumman Guidance and Electronics Co Inc
•
Filing: 1965-05-28
•
Granted: 1969-04-01
•
Expires: 1985-05-28
Abstract
No abstract record available.
Inventors
- 👤 Richard S Throckmorton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:16
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/02; G05D1/0202
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
140 words
IN A TRACK FOLLOWER FOR GUIDING A VEHICLE ONTO A PREDETERMINED TRACK OVER THE SURFACE OF THE EARTH, MEANS FOR GENERATING A FIRST SIGNAL, VCT, WHICH IS A MEASURE OF THE VELOCITY COMPONENT OF SAID VEHICLE PERPENDICULAR TO SAID TRACK; MEANS FOR INTEGRATING SAID VCT SIGNAL TO GENERATE A SECOND SIGNAL DOT, INCLUDING MEANS FOR ADJUSTING DOT, WHICH IS A MEASURE OF THE DISTANCE SAID VEHICLE IS FROM SAID TRACK; MEANS FOR GENERATING A THIRD SIGNAL, $, WHICH IS MEASURE OF THE AZIMUTH OF THE TRACK OF SAID VEHICLE RELATIVE TO THE AZIMUTH OF SAID PREDETERMINED TRACK; MEANS FOR SCALING SAID FIRST AND SECOND SIGNALS WITH PREDETERMINED CONSTANTS K2 AND K1 RESPECTIVELY; AND MEANS FOR SUMMING $+K1DOT+K2VCT, IN WHICH K1 AND K2 ARE PREDETERMINED CONSTANTS, TO GENERATE A STERRING SIGNAL FOR SAID VEHICLE TO INTERCEPT AND FOLLOW SAID PREDETERMINED TRACK.
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) | 1972-03-31 | 1972-09-30 | 1973-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-31 | 1976-09-30 | 1977-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-31 | 1980-09-30 | 1981-04-01 | $7700.00 | Window Closed / Lapsed |