Patent US4318145A successfully refreshed from Google Patents.
Patent US4696109A successfully refreshed from Google Patents.
US4696109A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Satellite locator
Assignee: Individual
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Filing: 1985-10-03
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Granted: 1987-09-29
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Expires: 2005-10-03
Abstract
Abstract The sighting angles to above horizon points in the geostationary satellite orbit around the earth are determined from any known location on the earth with this device.
Inventors
- 👤 John H. Whaley, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:43
CPC Classifications
G; G09; G09B; G09B27/00; G09B27/04; G01; G01C; G01C21/00; G01C21/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
An apparatus for determining the azimuth and elevation angles from a known location on the surface of the earth to points in geostationary earth orbit comprising: a sheet of suitable material imprinted with a mercator projection grid of true azimuth versus elevation lines with superimposed curves corresponding to geostationary orbital points as calculated from various earth latitudes and superimposed curves corresponding to equal orbital longitude points with an attached rotatable circular dial with markings representing earth longitudes which is appropriately placed to coincide with the equal orbital longitude curves which extend from said mercator projection grid to the periphery of said circular dial.
Claim 2
Independent Claim
103 words
An apparatus for determining the azimuth and elevation angles from a known location on the surface of the earth to points in geostationary earth orbit comprising: a sheet of suitable material imprinted with a mercator projection grid of true azimuth versus elevation lines with superimposed curves corresponding to geostationary orbital points as calculated from various earth latitudes and superimposed curves corresponding to equal orbital longitude points with an attached rotatable circular dial with markings representing earth longitudes which is appropriately placed to coincide with the equal orbital longitude curves which extend from said mercator projection grid to the periphery of said circular dial.
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) | 1990-09-28 | 1991-03-30 | 1991-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-09-28 | 1995-03-30 | 1995-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-09-28 | 1999-03-30 | 1999-09-29 | $7700.00 | Window Closed / Lapsed |