Patent US3465342A successfully refreshed from Google Patents.
US3465342A
Expired / Lapsed
US
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Radio direction-finding receiver for the detection of radar apparatus
Assignee: BERNARD M DELAPALME
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Filing: 1953-05-04
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Granted: 1969-09-02
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Expires: 1973-05-04
Abstract
No abstract record available.
Inventors
- 👤 Bernard M Delapalme
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:59
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A DIRECTION-FINDING RADIO RECEIVER FOR DETERMINING THE BEARING OF MICROWAVE RADIO SIGNALS OF THE PULSED TYPE, SAID RECEIVER COMPRISING A PLURALITY OF MICROWAVE RECEIVING ANTENNAS HAVING SIMILAR DIRECTIVITY CHARACTERISTICS, MEANS TO MOUNT SAID ANTENNAS IN A FAN-SHAPED ARRAY IN SUCH RELATIVE POSITIONS THAT THE AXIS OF THE HORIZONTAL PATTERN OF EACH IS SUBSTANTIALLY TANGENT TO THE PATTERN OF THE ADJACENT ANTENNA IN SAID ARRAY AT THE BASE THEREOF, MEANS TO ROTATE SAID MOUNTING MEANS ABOUT A VERTICAL AXIS THROUGH AT LEAST HALF THE ANGLE OF SAID PATTERN AT THE BASE THEREOF, AND INDICATOR MEANS FOR PRESENTING SIDE BY SIDE ON A CATHODE-RAY TUBE AFTER DETECTION AND SUBSTANTIALLY EQUAL AMOUNTS OF AMPLIFICATION PULSES OF MICROWAVE ENERGY RECEIVED BY TWO ADJACENT ANTENNAS OF SAID ARRAY.
Claim 2
Dependent Claim
123 words
A DIRECTION-FINDING RADIO RECEIVER FOR DETERMINING THE BEARING OF MICROWAVE RADIO SIGNALS OF THE PULSED TYPE, SAID RECEIVER COMPRISING A PLURALITY OF MICROWAVE RECEIVING ANTENNAS HAVING SIMILAR DIRECTIVITY CHARACTERISTICS, MEANS TO MOUNT SAID ANTENNAS IN A FAN-SHAPED ARRAY IN SUCH RELATIVE POSITIONS THAT THE AXIS OF THE HORIZONTAL PATTERN OF EACH IS SUBSTANTIALLY TANGENT TO THE PATTERN OF THE ADJACENT ANTENNA IN SAID ARRAY AT THE BASE THEREOF, MEANS TO ROTATE SAID MOUNTING MEANS ABOUT A VERTICAL AXIS THROUGH AT LEAST HALF THE ANGLE OF SAID PATTERN AT THE BASE THEREOF, AND INDICATOR MEANS FOR PRESENTING SIDE BY SIDE ON A CATHODE-RAY TUBE AFTER DETECTION AND SUBSTANTIALLY EQUAL AMOUNTS OF AMPLIFICATION PULSES OF MICROWAVE ENERGY RECEIVED BY TWO ADJACENT ANTENNAS OF SAID ARRAY.
References Cited (Backward Citations)
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US2422122A
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US2487759A
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US2448041A
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US2449978A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-01 | 1973-03-03 | 1973-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-01 | 1977-03-03 | 1977-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-01 | 1981-03-03 | 1981-09-02 | $7700.00 | Window Closed / Lapsed |