US3178682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft ground position indicator
Assignee: Individual
•
Filing: 1961-02-14
•
Granted: 1965-04-13
•
Expires: 1981-02-14
Abstract
No abstract record available.
Inventors
- 👤 Wright Jerauld George
- 👤 Hugh W Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:45
CPC Classifications
G; G01; G01C; G01C21/00; G01C21/20; G01C21/22; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
IN A GROUND POSITION INDICATOR FOR AN AIRCRAFT, A PROJECTOR COMPRISING A POINT SOURCE OF LIGHT; A LIGHT TRANSMITTING GRATICULE BEARING AN AIRCRAFT REPRESENTATION BENEATH SAID POINT SOURCE OF LIGHT; A SECOND GRATICULE BENEATH THE FIRST MENTIONED GRATICUL ADAPTED TO TRANSMIT THE IMAGE OF THE AIRCRAFT REPRESENTATION AND AN AZIMUTH VECTOR; MEANS RESPONSIVE TO AN INPUT ANALOGUE OF AIRCRAFT TRACK TO ORIENT SAID AIRCRAFT REPRESENTATION BEARING GRATICULE; MEANS RESPONSIVE TO A COMMAND AZIMUTH ANALOGUE SIGNAL FOR ORIENTING SAID SECOND GRATICULE; AND MEANS FOR MOVING SAID POINT SOURCE OF LIGHT RELATIVE TO SAID GRATICULES IN A PLANE PARALLEL THERETO IN RESPONSE TO INPUT ANALOGUE SIGNALS OF THE COORDINATES OF CHANGE IN AIRCRAFT GROUND POSITION, WHEREBY A PICTORIAL REPRESENTATION OF AIRCRAFT POSITION, THE TRACK BEING FLOWN BY THE AIRCRAFT, AND THE VECTOR BEARING FROM THE AIRCRAFT OF A SELECTED OBJECT MAY BE PROJECTED ON A CHART.
Claim 2
Dependent Claim
144 words
IN A GROUND POSITION INDICATOR FOR AN AIRCRAFT, A PROJECTOR COMPRISING A POINT SOURCE OF LIGHT; A LIGHT TRANSMITTING GRATICULE BEARING AN AIRCRAFT REPRESENTATION BENEATH SAID POINT SOURCE OF LIGHT; A SECOND GRATICULE BENEATH THE FIRST MENTIONED GRATICUL ADAPTED TO TRANSMIT THE IMAGE OF THE AIRCRAFT REPRESENTATION AND AN AZIMUTH VECTOR; MEANS RESPONSIVE TO AN INPUT ANALOGUE OF AIRCRAFT TRACK TO ORIENT SAID AIRCRAFT REPRESENTATION BEARING GRATICULE; MEANS RESPONSIVE TO A COMMAND AZIMUTH ANALOGUE SIGNAL FOR ORIENTING SAID SECOND GRATICULE; AND MEANS FOR MOVING SAID POINT SOURCE OF LIGHT RELATIVE TO SAID GRATICULES IN A PLANE PARALLEL THERETO IN RESPONSE TO INPUT ANALOGUE SIGNALS OF THE COORDINATES OF CHANGE IN AIRCRAFT GROUND POSITION, WHEREBY A PICTORIAL REPRESENTATION OF AIRCRAFT POSITION, THE TRACK BEING FLOWN BY THE AIRCRAFT, AND THE VECTOR BEARING FROM THE AIRCRAFT OF A SELECTED OBJECT MAY BE PROJECTED ON A CHART.
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) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |