US3784968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Navigation system
Assignee: Individual
•
Filing: 1971-05-27
•
Granted: 1974-01-08
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Expires: 1991-05-27
Abstract
Abstract A navigation system for determining on board a moving craft the position of the moving craft in relation to a fixed station which is provided with visual means for guiding said moving craft wherein there are means on said station for visible said visual means to the navigator of said moving craft by means of laser beams.
Inventors
- 👤 J Brosow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:49
CPC Classifications
B; B64; B64F; B64F1/00; B64F1/18; B64F1/20; G; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
121 words
A navigation system for visually aiding a pilot in landing an aircraft, comprising a first array of laser beam reflecting screens located sequentially along a straight line pointing towards a runway, a second and a third array of laser beam reflecting screens located on the right hand and left hand side, respectively, of said runway and mutually converging towards said runway, means for generating stripshaped laser beams, means for sweeping a first laser beam in a vertical plane along said first array, means for sweeping second and third laser beams along said second and third arrays, respectively, and means for restricting the visibility of the beams reflected bY said screens to predetermined angular sectors in the vertical and horizontal plane, respectively.
Claim 2
Dependent Claim
121 words
A navigation system for visually aiding a pilot in landing an aircraft, comprising a first array of laser beam reflecting screens located sequentially along a straight line pointing towards a runway, a second and a third array of laser beam reflecting screens located on the right hand and left hand side, respectively, of said runway and mutually converging towards said runway, means for generating stripshaped laser beams, means for sweeping a first laser beam in a vertical plane along said first array, means for sweeping second and third laser beams along said second and third arrays, respectively, and means for restricting the visibility of the beams reflected bY said screens to predetermined angular sectors in the vertical and horizontal plane, respectively.
Claim 3
Dependent Claim
18 words
A navigation system according to claim 1, wherein said threee generated laser beams are beams of different colors.
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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) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |