US3308278A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Latitude-longitude computer
Assignee: Individual
•
Filing: 1963-02-26
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Granted: 1967-03-07
•
Expires: 1983-02-26
Abstract
No abstract record available.
Inventors
- 👤 John H Davis
- 👤 Leonard E Needles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:26
CPC Classifications
G; G01; G01S; G01S5/00; G01S5/02; G01S5/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
180 words
A NAVIGATION COMPUTER SYSTEM FOR USE IN AN AIRCRAFT, COMPRISING IN COMBINATION: FIRST COMPUTER MEANS COMPUTING THE SPHERICAL DISTANCE BETWEEN ONE OF THE SLAVE STATIONS OF A LORAN TRIAD AND THE ASSUMED POSITION OF THE AIRCRAFT, SECOND COMPUTER MEANS COMPUTING THE SPHERICAL DISTANCE BETWEEN THE MASTER STATION OF THE LORAN TRIAD AND THE ASSUMED POSITION OF THE AIRCRAFT, LORAN RECEIVER MEANS RECEIVING LORAN SIGNALS FROM THE LORAN TRIAD, MEANS COMPARING THE COMPUTED DISTANCES OF SAID FIRST AND SECOND COMPUTER MEANS WITH THE SIGNALS FROM SAID LORAN RECEIVER MEANS FOR ENABLING SAID FIRST COMPUTER MEANS TO COMPUTE THE SPHERICAL DISTANCE BETWEEN THE OTHER OF SAID SLAVE STATIONS OF THE LORAN TRIAD WITH THE ASSUMED POSITION OF THE AIRCRAFT IF THE COMPARISON IS WITHIN A PREDETERMINED ERROR, ELLIPSE-HYPERBOLA COMPUTER MEANS CONNECTED TO SAID FIRST AND SECOND COMPUTER MEANS AND SAID LORAN RECEIVER MEANS COMPUTING THE SINE AND COSINE FUNCTION OF THE SPHERICAL DISTANCES BETWEEN THE MASTER STATION OF THE LORAN TRIAD AND THE POSITION OF THE AIRCRAFT AND THE SELECTED SLAVE STATION OF THE LORAN TRIAD AND THE POSITION OF THE AIRCRAFT.
Claim 2
Dependent Claim
180 words
A NAVIGATION COMPUTER SYSTEM FOR USE IN AN AIRCRAFT, COMPRISING IN COMBINATION: FIRST COMPUTER MEANS COMPUTING THE SPHERICAL DISTANCE BETWEEN ONE OF THE SLAVE STATIONS OF A LORAN TRIAD AND THE ASSUMED POSITION OF THE AIRCRAFT, SECOND COMPUTER MEANS COMPUTING THE SPHERICAL DISTANCE BETWEEN THE MASTER STATION OF THE LORAN TRIAD AND THE ASSUMED POSITION OF THE AIRCRAFT, LORAN RECEIVER MEANS RECEIVING LORAN SIGNALS FROM THE LORAN TRIAD, MEANS COMPARING THE COMPUTED DISTANCES OF SAID FIRST AND SECOND COMPUTER MEANS WITH THE SIGNALS FROM SAID LORAN RECEIVER MEANS FOR ENABLING SAID FIRST COMPUTER MEANS TO COMPUTE THE SPHERICAL DISTANCE BETWEEN THE OTHER OF SAID SLAVE STATIONS OF THE LORAN TRIAD WITH THE ASSUMED POSITION OF THE AIRCRAFT IF THE COMPARISON IS WITHIN A PREDETERMINED ERROR, ELLIPSE-HYPERBOLA COMPUTER MEANS CONNECTED TO SAID FIRST AND SECOND COMPUTER MEANS AND SAID LORAN RECEIVER MEANS COMPUTING THE SINE AND COSINE FUNCTION OF THE SPHERICAL DISTANCES BETWEEN THE MASTER STATION OF THE LORAN TRIAD AND THE POSITION OF THE AIRCRAFT AND THE SELECTED SLAVE STATION OF THE LORAN TRIAD AND THE POSITION OF THE AIRCRAFT.
References Cited (Backward Citations)
US3020545A
Cited
US3070796A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |