US4454658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device to locate communication satellites
Assignee: Individual
•
Filing: 1981-09-10
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Granted: 1984-06-19
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Expires: 2001-09-10
Abstract
Abstract A device to locate the position of a communication satellite with respect to a specific site on the earth's surface including a transparent screen having markings to indicate the positions of one or more satellites for that site with respect to a horizontal platform and a north orientation, a table including an arcuate means to mount the screen, a wide-angle viewer fixed to the table with its axis perpendicular to the tangent of the arcuate means at its south position, a compass fixed to the table oriented with north-south parallel to the axis of the wide-angle viewer and a level to indicate when the tabletop is horizontal.
Inventors
- 👤 Donald F. Lewis, deceased
- 👤 administrator by Sheri Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:35
CPC Classifications
G; G01; G01W; G01W1/00; G01W1/12; G01J; G01J1/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
130 words
A device useful to locate the position of communication satellites comprising: a flat table having arcuate means adapted to receive a stiff, flexible material; a transparent screen made of stiff, flexible material fixed to said arcuate mean with said transparent screen having markings indicating the location of communication satellites at a given latitude and longitude with respect to the north-south orientation of said table; a wide-angle viewer fixed to said table in a position to view said screen with the axis of the wide-angle viewer perpendicular to the tangent of said screen at the south position; a compass fixed to said table with north-south axis aligned parallel to the axis of said wide-angle viewer; and a level positioned to indicate the horizontal orientation of the upper surface of said table.
Claim 2
Independent Claim
130 words
A device useful to locate the position of communication satellites comprising: a flat table having arcuate means adapted to receive a stiff, flexible material; a transparent screen made of stiff, flexible material fixed to said arcuate mean with said transparent screen having markings indicating the location of communication satellites at a given latitude and longitude with respect to the north-south orientation of said table; a wide-angle viewer fixed to said table in a position to view said screen with the axis of the wide-angle viewer perpendicular to the tangent of said screen at the south position; a compass fixed to said table with north-south axis aligned parallel to the axis of said wide-angle viewer; and a level positioned to indicate the horizontal orientation of the upper surface of said table.
Claim 3
Dependent Claim
17 words
The device of claim 1 having means below said table to fix said device to a tripod.
Claim 4
Dependent Claim
15 words
The device of claim 1 having the upper surface of said table marked with information.
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) | 1987-06-19 | 1987-12-19 | 1988-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-19 | 1991-12-19 | 1992-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-19 | 1995-12-19 | 1996-06-19 | $7700.00 | Window Closed / Lapsed |