US3246221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Servo controlled magnetic platform
Assignee: Individual
•
Filing: 1963-10-21
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Granted: 1966-04-12
•
Expires: 1983-10-21
Abstract
No abstract record available.
Inventors
- 👤 Jean C Rabier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:41
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/02; G01R33/0206
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A SYSTEM FOR SERVO CONTROLLING, WITH RESPECT TO THE EARTH''S MAGNETIC FIELD, THE ORIENTATION OF A MAGNETIC PLATFORM HAVING A MAGNETIC DETECTING HEAD THEREON, COMPRISING: ORIENTOR MAGNETOMETER MEANS MOUNTED ON THE PLATFORM FOR PROVIDING A PICK-UP SIGNAL WHEN THE ORIENTATION OF THE PLATFOR IS NOT EXACTLY PERPENDICULAR TO THE EARTH''S MAGNETIC FIELD, THE PICK-UP SIGNAL HAVING A WIDE SPECTRUM WITH HIGH LEVEL HARMONICS MIXED WITH VERY LOW LEVEL HARMONICS, FILTER MEANS FOR REJECTING THE UNBALANCED FUNDAMENTAL FREQUENCY AND PERMITTING THE OTHER COMPONENTS TO PASS THROUGH, AMPLIFIER-MIXER MEANS FOR AMPLIFYING SAID OTHER COMPONENTS AND MIXING THE SAME TO DELIVER AS AN OUTPUT
Claim 2
Independent Claim
101 words
A SYSTEM FOR SERVO CONTROLLING, WITH RESPECT TO THE EARTH''S MAGNETIC FIELD, THE ORIENTATION OF A MAGNETIC PLATFORM HAVING A MAGNETIC DETECTING HEAD THEREON, COMPRISING: ORIENTOR MAGNETOMETER MEANS MOUNTED ON THE PLATFORM FOR PROVIDING A PICK-UP SIGNAL WHEN THE ORIENTATION OF THE PLATFOR IS NOT EXACTLY PERPENDICULAR TO THE EARTH''S MAGNETIC FIELD, THE PICK-UP SIGNAL HAVING A WIDE SPECTRUM WITH HIGH LEVEL HARMONICS MIXED WITH VERY LOW LEVEL HARMONICS, FILTER MEANS FOR REJECTING THE UNBALANCED FUNDAMENTAL FREQUENCY AND PERMITTING THE OTHER COMPONENTS TO PASS THROUGH, AMPLIFIER-MIXER MEANS FOR AMPLIFYING SAID OTHER COMPONENTS AND MIXING THE SAME TO DELIVER AS AN OUTPUT
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |