US3277467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Time sharing radar-altimeter
Assignee: Texas Instruments Inc
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Filing: 1964-12-16
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Granted: 1966-10-04
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Expires: 1984-12-16
Abstract
No abstract record available.
Inventors
- 👤 George M Barney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:24
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/06; G01S13/42; G01S13/44; G01S13/4418; G01S13/88; G01S13/93; G01S13/933; G01S13/935
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
IN AN AIRCRAFT RADAR WHICH SCANS IN ELEVATION AHEAD OF SAID AIRCRAFT FROM BELOW TO ABOVE A HORIZON WITH A BEAM OF ELECTROMAGNETIC PULSES, THE COMBINATION WHICH COMPRISES: (A) MEANS OPERABLE TO BEAM RF PULSES SUBSTANTIALLY DIRECTLY TO THE TERRAIN BELOW SAID AIRCRAFT, (B) MEANS TO SENSE EARLY RETURNS OF THE VERTICALLY DIRECTED PULSES, (C) AN AMPLIFYING CHANNEL GATED TO TREAT SIGNALS REPRESENTATIVE OF SAID EARLY RETURNS, (D) MEANS COUPLED TO SAID CHANNEL REFERENCED TO TRANSMISSION OF EACH OF SAID PULSES DIRECTED ABOVE SAID HORIZON TO TRACK SAID EARLY RETURNS TO DETERMINE ELEVATION OF SAID AIRCRAFT, AND (E) MEANS COUPLED TO SAID CHANNEL FOR AMPLIFYING LATE RETURNS FROM FORWARDLY DIRECTED RF PULSES.
Claim 2
Dependent Claim
112 words
IN AN AIRCRAFT RADAR WHICH SCANS IN ELEVATION AHEAD OF SAID AIRCRAFT FROM BELOW TO ABOVE A HORIZON WITH A BEAM OF ELECTROMAGNETIC PULSES, THE COMBINATION WHICH COMPRISES: (A) MEANS OPERABLE TO BEAM RF PULSES SUBSTANTIALLY DIRECTLY TO THE TERRAIN BELOW SAID AIRCRAFT, (B) MEANS TO SENSE EARLY RETURNS OF THE VERTICALLY DIRECTED PULSES, (C) AN AMPLIFYING CHANNEL GATED TO TREAT SIGNALS REPRESENTATIVE OF SAID EARLY RETURNS, (D) MEANS COUPLED TO SAID CHANNEL REFERENCED TO TRANSMISSION OF EACH OF SAID PULSES DIRECTED ABOVE SAID HORIZON TO TRACK SAID EARLY RETURNS TO DETERMINE ELEVATION OF SAID AIRCRAFT, AND (E) MEANS COUPLED TO SAID CHANNEL FOR AMPLIFYING LATE RETURNS FROM FORWARDLY DIRECTED RF PULSES.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |