US3266038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radar systems
Assignee: Plessey Overseas Ltd
•
Filing: 1964-02-13
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Granted: 1966-08-09
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Expires: 1984-02-13
Abstract
No abstract record available.
Inventors
- 👤 Milne Kenneth
- 👤 Flounders John Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:56
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/22; G; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A RADAR SYSTEM COMPRISING A TRANSMITTER FEEDING A DIRECTIONAL AERIAL, THE TRANSMITTER PRODUCING PULSES OF RADIO FREQUENCY ENERGY THE FREQUENCY OF WHICH VARIES MONOTONICALLY DURING EACH PULSE, AND THE AERIAL BEING SUCH THAT THE DIRECTION OF THE RADIATED BEAM DEPENDS ON THE FREQUENCY OF THE SIGNAL AND CHANGES THROUGH AT LEAST SEVERAL BEAM WIDTHS DURING EACH PULSE, AND A RECEIVER INCLUDING AN EQUALISER HAVING A DELAY SUBSTANTIALLY MATCHING THE TOTAL TRANSMITTER AND AERIAL DELAY AT ALL RADIATED FREQUENCIES SO THAT ALL THE RADIATED FREQUENCIES ARRIVE SIMULTANEOUSLY AT THE OUTPUT OF THE EQUALIZER.
Claim 2
Dependent Claim
92 words
A RADAR SYSTEM COMPRISING A TRANSMITTER FEEDING A DIRECTIONAL AERIAL, THE TRANSMITTER PRODUCING PULSES OF RADIO FREQUENCY ENERGY THE FREQUENCY OF WHICH VARIES MONOTONICALLY DURING EACH PULSE, AND THE AERIAL BEING SUCH THAT THE DIRECTION OF THE RADIATED BEAM DEPENDS ON THE FREQUENCY OF THE SIGNAL AND CHANGES THROUGH AT LEAST SEVERAL BEAM WIDTHS DURING EACH PULSE, AND A RECEIVER INCLUDING AN EQUALISER HAVING A DELAY SUBSTANTIALLY MATCHING THE TOTAL TRANSMITTER AND AERIAL DELAY AT ALL RADIATED FREQUENCIES SO THAT ALL THE RADIATED FREQUENCIES ARRIVE SIMULTANEOUSLY AT THE OUTPUT OF THE EQUALIZER.
References Cited (Backward Citations)
US3029429A
Cited
US3099833A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |