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US5287628A
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Omni range inclino-compass
Assignee: Individual
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Filing: 1992-06-12
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Granted: 1994-02-22
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Expires: 2012-06-12
Abstract
Abstract A solid-state omni range incline-compass having a gravity sensor and a geomagnetic flux sensor provided on, each of three orthogonal axes established on a moving body a unit for generating a mathematic horizontal plane by making a gimbal mechanism as a mathematic equation on the basis of outputs from the gravity sensor located on each of the three orthogonal axes and a unit for calculating an azimuth angle of the moving body on the basis of two orthogonal axes on the mathematic horizontal plane.
Inventors
- 👤 Takao Yamaguchi
- 👤 Hajime Nishizawa
- 👤 Toshimi Kumakura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:33
CPC Classifications
G; G01; G01C; G01C17/00; G01C17/02; G01C17/28; G01C17/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A solid-state omni range inclino-compass comprising: (a) a gravity sensor and a geomagnetic flux sensor provided on each of three orthogonal axes established on a moving body; (b) means for generating a mathematic horizontal compass by making a gimbal mechanism as a mathematic equation on the basis of outputs from said gravity sensor located on each of said three orthogonal axes; (c) means for calculating an azimuth angle of said moving body on the basis of two orthogonal axes on said mathematic horizontal compass.
Claim 2
Dependent Claim
84 words
A solid-state omni range inclino-compass comprising: (a) a gravity sensor and a geomagnetic flux sensor provided on each of three orthogonal axes established on a moving body; (b) means for generating a mathematic horizontal compass by making a gimbal mechanism as a mathematic equation on the basis of outputs from said gravity sensor located on each of said three orthogonal axes; (c) means for calculating an azimuth angle of said moving body on the basis of two orthogonal axes on said mathematic horizontal compass.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-02-21 | 1997-08-23 | 1998-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-02-21 | 2001-08-23 | 2002-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-02-21 | 2005-08-23 | 2006-02-22 | $7700.00 | Window Closed / Lapsed |