Patent US3076120A successfully refreshed from Google Patents.
US3076120A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radar displays
Assignee: Decca Ltd
•
Filing: 1960-05-19
•
Granted: 1963-01-29
•
Expires: 1980-05-19
Abstract
No abstract record available.
Inventors
- 👤 Matthews Robert
- 👤 Knowles Philip Neville George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:15
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/04; G01S7/06; G01S7/22; H; H04; H04J; H04J1/00; H04J1/02; H04J1/04; H04J1/045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
IN A RADAR PLAN POSITION INDICATOR DISPLAY HAVING A CATHODE RAY TUBE DISPLAY SCREEN WITH A REPETITIVELY SCANNED RADAR DISPLAY TRACE WHICH IS ANGULARLY ROTATED ON THE SCREEN; ELECTRONIC MARKER GENERATING MEANS FOR PRODUCING A MARKER ON THE DISPLAY SCREEN IN THE INTERVALS BETWEEN THE RADAR DISPLAY SCANS IN A POSITION DETERMINED BY APPLIED CONTROL VOLTAGES, AND TWO VOLTAGE WAVEFORM GENERATING MEANS ARRANGED TO FEED TWO LINEARLY VARYING VOLTAGES TO SAID ELECTRONIC MARKER GENERATING MEANS AS CONTROL VOLTAGES, SAID WAVEFORM GENERATING MEANS EACH INCLUDING MEANS FOR VARYING THE RATE OF CHANGE WITH TIME OF THE OUTPUT VOLTAGE SO THAT THE MARKER IS DISPLAYED IN POSITIONS WHICH ARE DISPLACED SUCCESSIVELY ACROSS THE SCREEN IN A DIRECTION AND AT A RATE DEPENDENT ON THE ADJUSTABLE SETTING OF SAID VOLTAGE WAVEFORM GENERATING MEANS.
Claim 2
Dependent Claim
130 words
IN A RADAR PLAN POSITION INDICATOR DISPLAY HAVING A CATHODE RAY TUBE DISPLAY SCREEN WITH A REPETITIVELY SCANNED RADAR DISPLAY TRACE WHICH IS ANGULARLY ROTATED ON THE SCREEN; ELECTRONIC MARKER GENERATING MEANS FOR PRODUCING A MARKER ON THE DISPLAY SCREEN IN THE INTERVALS BETWEEN THE RADAR DISPLAY SCANS IN A POSITION DETERMINED BY APPLIED CONTROL VOLTAGES, AND TWO VOLTAGE WAVEFORM GENERATING MEANS ARRANGED TO FEED TWO LINEARLY VARYING VOLTAGES TO SAID ELECTRONIC MARKER GENERATING MEANS AS CONTROL VOLTAGES, SAID WAVEFORM GENERATING MEANS EACH INCLUDING MEANS FOR VARYING THE RATE OF CHANGE WITH TIME OF THE OUTPUT VOLTAGE SO THAT THE MARKER IS DISPLAYED IN POSITIONS WHICH ARE DISPLACED SUCCESSIVELY ACROSS THE SCREEN IN A DIRECTION AND AT A RATE DEPENDENT ON THE ADJUSTABLE SETTING OF SAID VOLTAGE WAVEFORM GENERATING MEANS.
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) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |