Patent US3071959A successfully refreshed from Google Patents.
US3071959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of measuring and compensating for deviation error in compass systems for maneuverable craft
Assignee: Unisys Corp
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Filing: 1961-01-25
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Granted: 1963-01-08
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Expires: 1981-01-25
Abstract
No abstract record available.
Inventors
- 👤 Marlin C Depp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:52
CPC Classifications
G; G01; G01C; G01C17/00; G01C17/38; G01C17/02; G01C17/28; G01C17/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
A METHOD OF MEASURING DEVIATION ERROR IN A FLUX VALVE COMPASS SYSTEM FOR MANEUVERABLE CRAFT WHICH CONSISTS IN ORIENTING THE FLUX VALVE OF THE SYSTEM APART FROM THE CRAFT IN A DESIRED DIRECTION IN THE EARTH''S MAGNETIC FIELD, CALIBRATING THE ORIENTED VALVE BY NULLING ITS OUTPUT ELECTRICALLY TO CANCEL THE INFLUENCE OF THE EARTH''S MAGNETIC FIELD THEREON, ORIENTING THE CRAFT IN THE EARTH''S MAGNETIC FIELD TO CORRESPOND TO THE ORIENTATION OF THE FLUX VALVE, LOCATING THE CALIBRATED VALVE IN ITS ORIENTED DIRECTION ON THE ORIENTED CRAFT, ELECTRICALLY COMPASS SWINGING THE CRAFT BY ENERGIZING THE WINDINGS OF THE CALIBRATED VALVE TO PROVIDE A PLURALITY OF DIRECTIVE FIELDS APART FROM THE INFLUENCE OF THE EARTH''S MAGNETIC FIELD FOR EACH OF A PLURALITY OF SIMULATED ANGULAR DISPLACEMENTS OF THE CRAFT WITH RELATION TO THE EARTH''S MAGNETIC FIELD, AND OBSERVING THE DEVIATION ERROR OF THE SYSTEM ON THE COMPASS AS A MEASURE OF THE OUTPUT OF THE VALVE AT EACH OF THE SIMULATED ANGULAR DISPLACEMENTS OF THE CRAFT.
Claim 2
Independent Claim
164 words
A METHOD OF MEASURING DEVIATION ERROR IN A FLUX VALVE COMPASS SYSTEM FOR MANEUVERABLE CRAFT WHICH CONSISTS IN ORIENTING THE FLUX VALVE OF THE SYSTEM APART FROM THE CRAFT IN A DESIRED DIRECTION IN THE EARTH''S MAGNETIC FIELD, CALIBRATING THE ORIENTED VALVE BY NULLING ITS OUTPUT ELECTRICALLY TO CANCEL THE INFLUENCE OF THE EARTH''S MAGNETIC FIELD THEREON, ORIENTING THE CRAFT IN THE EARTH''S MAGNETIC FIELD TO CORRESPOND TO THE ORIENTATION OF THE FLUX VALVE, LOCATING THE CALIBRATED VALVE IN ITS ORIENTED DIRECTION ON THE ORIENTED CRAFT, ELECTRICALLY COMPASS SWINGING THE CRAFT BY ENERGIZING THE WINDINGS OF THE CALIBRATED VALVE TO PROVIDE A PLURALITY OF DIRECTIVE FIELDS APART FROM THE INFLUENCE OF THE EARTH''S MAGNETIC FIELD FOR EACH OF A PLURALITY OF SIMULATED ANGULAR DISPLACEMENTS OF THE CRAFT WITH RELATION TO THE EARTH''S MAGNETIC FIELD, AND OBSERVING THE DEVIATION ERROR OF THE SYSTEM ON THE COMPASS AS A MEASURE OF THE OUTPUT OF THE VALVE AT EACH OF THE SIMULATED ANGULAR DISPLACEMENTS OF THE CRAFT.
References Cited (Backward Citations)
US2887872A
Cited
US2887873A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |