US3194869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for measuring the altitude and profiling a three-dimensional map
Assignee: ACF Industries Inc
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Filing: 1963-04-25
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Granted: 1965-07-13
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Expires: 1983-04-25
Abstract
No abstract record available.
Inventors
- 👤 Robert M Eisenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:50
CPC Classifications
G; G09; G09B; G09B9/00; G09B9/02; G09B9/08; G09B9/40; G01; G01S; G01S7/00; G01S7/02; G01S7/40; G01S7/4052; G01S7/4082
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
APPARATUS FOR DETERMINING THE ELEVATION OF POINTS ON A THREE DIMENSIONAL MAP, COMPRISING MEANS FOR PROJECTING A RAY OF LIGHT TOWARD GIVEN POINTS HAVING A ZERO ALTITUDE AT AN ACUTE ANGLE TO THE PLANE OF THE MAP, WHEREBY THE POINT OF INTERSECTION OF THE RAY OF LIGHT WITH THE MAP HAS A GEOGRAPHIC DEVIATION WHICH VARIES WITH THE ELEVATION OF SAID POINT, PHOTOELECTRIC MEANS FOR RECEIVING FROM THE MAP AN AMOUNT OF LIGHT WHICH VARIES WITH SAID DEVIATION, MEANS RESPONSIVE TO THE PHOTOELECTRIC MEANS FOR REPOSITIONING SAID RAY OF LIGHT SO AS TO DIMINISH SAID DEVIATION, SAID LAST MEANS PROVIDING AN OUTPUT WHICH IS A MEASURE OF THE ELEVATION AT THE POINT OF INTERSECTION OF THE REPOSITIONED RAY OF LIGHT.
Claim 2
Dependent Claim
120 words
APPARATUS FOR DETERMINING THE ELEVATION OF POINTS ON A THREE DIMENSIONAL MAP, COMPRISING MEANS FOR PROJECTING A RAY OF LIGHT TOWARD GIVEN POINTS HAVING A ZERO ALTITUDE AT AN ACUTE ANGLE TO THE PLANE OF THE MAP, WHEREBY THE POINT OF INTERSECTION OF THE RAY OF LIGHT WITH THE MAP HAS A GEOGRAPHIC DEVIATION WHICH VARIES WITH THE ELEVATION OF SAID POINT, PHOTOELECTRIC MEANS FOR RECEIVING FROM THE MAP AN AMOUNT OF LIGHT WHICH VARIES WITH SAID DEVIATION, MEANS RESPONSIVE TO THE PHOTOELECTRIC MEANS FOR REPOSITIONING SAID RAY OF LIGHT SO AS TO DIMINISH SAID DEVIATION, SAID LAST MEANS PROVIDING AN OUTPUT WHICH IS A MEASURE OF THE ELEVATION AT THE POINT OF INTERSECTION OF THE REPOSITIONED RAY OF LIGHT.
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) | 1968-07-12 | 1969-01-11 | 1969-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-12 | 1973-01-11 | 1973-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-12 | 1977-01-11 | 1977-07-13 | $7700.00 | Window Closed / Lapsed |