US3307177A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Navigation method and apparatus
Assignee: Boeing Co
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Filing: 1965-06-10
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Granted: 1967-02-28
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Expires: 1985-06-10
Abstract
No abstract record available.
Inventors
- 👤 Philip F Novak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:09
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
THE METHOD OF NAVIGATING A CRAFT WITH PRECISION OVER TERRAIN HAVING AN IDENTIFIABLE CHECK POINT ON THE DESIRED GROUND TRACK, COMPRISING UTILIZING NAVIGATIONAL MEANS FOR GUIDING THE CRAFT TOWARD THE CHECK POINT AND FOR COMPUTING TIME OF ARRIVAL OVER THE CHECK POINT; AS THE CRAFT PASSES OVER THE CHECK POINT, AS DETERMINED BY SUCH COMPUTATION, FORMING A DISPLAY WHICH IMAGES THE AREA DIRECTLY BELOW THE CRAFT OF SUFFICIENT SCOPE TO INCLUDE THE CHECK POINT NOTWITHSTANDING PROBABLE NAVIGATIONAL ERROR, AND UPON WHICH IMAGE IS IMPOSED A VISIBLE, SELECTIVELY MOVABLE CURSOR REFERENCED TO THE NADIR; SHIFTING THE CURSOR ACROSS THE IMAGE TO AN IDENTIFIABLE NAVIGATIONAL REFERENCE POINT BEARING A KNOWN RELATIONSHIP TO THE CHECK POINT SO AS TO DERIVE CO-ORDINATES OF POSITIONAL ERROR AT THE CHECK POINT; AND UTILIZING SUCH ERROR COORDINATES FOR MAKING NAVIGATIONAL CORRECTIONS THROUGH SAID MEANS.
Claim 2
Independent Claim
137 words
THE METHOD OF NAVIGATING A CRAFT WITH PRECISION OVER TERRAIN HAVING AN IDENTIFIABLE CHECK POINT ON THE DESIRED GROUND TRACK, COMPRISING UTILIZING NAVIGATIONAL MEANS FOR GUIDING THE CRAFT TOWARD THE CHECK POINT AND FOR COMPUTING TIME OF ARRIVAL OVER THE CHECK POINT; AS THE CRAFT PASSES OVER THE CHECK POINT, AS DETERMINED BY SUCH COMPUTATION, FORMING A DISPLAY WHICH IMAGES THE AREA DIRECTLY BELOW THE CRAFT OF SUFFICIENT SCOPE TO INCLUDE THE CHECK POINT NOTWITHSTANDING PROBABLE NAVIGATIONAL ERROR, AND UPON WHICH IMAGE IS IMPOSED A VISIBLE, SELECTIVELY MOVABLE CURSOR REFERENCED TO THE NADIR; SHIFTING THE CURSOR ACROSS THE IMAGE TO AN IDENTIFIABLE NAVIGATIONAL REFERENCE POINT BEARING A KNOWN RELATIONSHIP TO THE CHECK POINT SO AS TO DERIVE CO-ORDINATES OF POSITIONAL ERROR AT THE CHECK POINT; AND UTILIZING SUCH ERROR COORDINATES FOR MAKING NAVIGATIONAL CORRECTIONS THROUGH SAID MEANS.
References Cited (Backward Citations)
US3230524A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |