Patent US5218613A successfully refreshed from Google Patents.
Patent US3114907A successfully refreshed from Google Patents.
US3114907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-color, two persistence radar display systems
Assignee: Raytheon Co
•
Filing: 1958-07-01
•
Granted: 1963-12-17
•
Expires: 1978-07-01
Abstract
No abstract record available.
Inventors
- 👤 Alvin S Luftman
- 👤 Harold M Asquith
- 👤 John A Buckbee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:08
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/28; G01S7/2806
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
A RADAR DISPLAY SYSTEM COMPRISING A RADAR TRANSMITTER HAVING A ROTATABLE DIRECTIONAL ANTENNA, A RADAR RECEIVER, A STORAGE TUBE HAVING A STORAGE SURFACE ADAPTED TO BE SCANNED BY AN ELECTRON BEAM, MEANS FOR IMPRESSING THE OUTPUT OF SAID RECEIVER UPON THE INPUT CIRCUIT OF SAID STORAGE TUBE, MEANS FOR SWEEPING THE ELECTRON BEAM OF SAID STORAGE TUBE TO CAUSE SAID RECEIVER OUTPUT SIGNALS TO BE RECORDED IN SAID TUBE AS A PICTURE ON WHICH MOVING OBJECTS PRODUCE TRACKS, A CATHODE RAY DISPLAY TUBE HAVING A DISPLAY SCREEN ADAPTED TO PROVIDE A FIRST COLOR OF SHORT PERSISTENCE AND A SECOND COLOR LONG PERSISTENCE, SAID CATHODE RAY DISPLAY TUBE COUPLED TO THE OUTPUT CIRCUIT OF SAID STORAGE TUBE, MEANS FOR APPLYING SAID RECEIVER OUTPUT SIGNALS TO SAID CATHODE RAY DISPLAY TUBE DURING THE TIME SAID SIGNALS ARE BEING RECORDED IN SAID STORAGE TUBE, SWEEP GENERATOR MEANS FOR PERIODICALLY READING OUT SAID RECORDED SIGNALS FROM SAID STORAGE TUBE, AND MEANS FOR IMPRESSING SAID RECORDED SIGNALS ON THE INPUT CIRCUIT OF SAID CATHODE RAY DISPLAY TUBE.
Claim 2
Dependent Claim
172 words
A RADAR DISPLAY SYSTEM COMPRISING A RADAR TRANSMITTER HAVING A ROTATABLE DIRECTIONAL ANTENNA, A RADAR RECEIVER, A STORAGE TUBE HAVING A STORAGE SURFACE ADAPTED TO BE SCANNED BY AN ELECTRON BEAM, MEANS FOR IMPRESSING THE OUTPUT OF SAID RECEIVER UPON THE INPUT CIRCUIT OF SAID STORAGE TUBE, MEANS FOR SWEEPING THE ELECTRON BEAM OF SAID STORAGE TUBE TO CAUSE SAID RECEIVER OUTPUT SIGNALS TO BE RECORDED IN SAID TUBE AS A PICTURE ON WHICH MOVING OBJECTS PRODUCE TRACKS, A CATHODE RAY DISPLAY TUBE HAVING A DISPLAY SCREEN ADAPTED TO PROVIDE A FIRST COLOR OF SHORT PERSISTENCE AND A SECOND COLOR LONG PERSISTENCE, SAID CATHODE RAY DISPLAY TUBE COUPLED TO THE OUTPUT CIRCUIT OF SAID STORAGE TUBE, MEANS FOR APPLYING SAID RECEIVER OUTPUT SIGNALS TO SAID CATHODE RAY DISPLAY TUBE DURING THE TIME SAID SIGNALS ARE BEING RECORDED IN SAID STORAGE TUBE, SWEEP GENERATOR MEANS FOR PERIODICALLY READING OUT SAID RECORDED SIGNALS FROM SAID STORAGE TUBE, AND MEANS FOR IMPRESSING SAID RECORDED SIGNALS ON THE INPUT CIRCUIT OF SAID CATHODE RAY DISPLAY TUBE.
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) | 1966-12-16 | 1967-06-17 | 1967-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-16 | 1971-06-17 | 1971-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-16 | 1975-06-17 | 1975-12-17 | $7700.00 | Window Closed / Lapsed |