US3457410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiance compensation means for horizon sensors
Assignee: Barnes Engineering Co
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Filing: 1966-10-17
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Granted: 1969-07-22
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Expires: 1986-10-17
Abstract
No abstract record available.
Inventors
- 👤 Robert C Savoca
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:54
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
IN A HORIZON SENSOR PROVIDED WITH SCANNING MEANS TO SCAN ACROSS THE EARTH, INCLUDING AN INFRARED DETECTOR AND PROCESSING CIRCUITS FOR COMPARING THE TIME DELAY BETWEEN HORIZON CROSSINGS AN AN INTERNALLY GENERATED SIGNAL TO THE TIME DELAY FROM THE SIGNAL TO THE OTHER HORIZON CROSSING, THE IMPROVEMENT WHICH COMPRISES, (A) A HIGH-PASS AMPLIFIER HAVING ITS INPUT CONNECTED TO THE INFRARED DETECTOR AND HAVING ITS INPUT CONNECTED TO CORRESPONDING TO THE RATE-OF-CHANGE OF SIGNAL OF A HORIZON CROSSING BUT BEING TOO SHORT TO RESPOND TO GRADUAL SIGNAL CHANGES THROUGH A SCAN ACROSS THE EARTH,
Claim 2
Dependent Claim
93 words
IN A HORIZON SENSOR PROVIDED WITH SCANNING MEANS TO SCAN ACROSS THE EARTH, INCLUDING AN INFRARED DETECTOR AND PROCESSING CIRCUITS FOR COMPARING THE TIME DELAY BETWEEN HORIZON CROSSINGS AN AN INTERNALLY GENERATED SIGNAL TO THE TIME DELAY FROM THE SIGNAL TO THE OTHER HORIZON CROSSING, THE IMPROVEMENT WHICH COMPRISES, (A) A HIGH-PASS AMPLIFIER HAVING ITS INPUT CONNECTED TO THE INFRARED DETECTOR AND HAVING ITS INPUT CONNECTED TO CORRESPONDING TO THE RATE-OF-CHANGE OF SIGNAL OF A HORIZON CROSSING BUT BEING TOO SHORT TO RESPOND TO GRADUAL SIGNAL CHANGES THROUGH A SCAN ACROSS THE EARTH,
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) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |