US3138796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three-dimensional display apparatus
Assignee: Individual
•
Filing: 1958-09-03
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Granted: 1964-06-23
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Expires: 1978-09-03
Abstract
No abstract record available.
Inventors
- 👤 Edward L Withey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:10
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/04; G01S7/06; G01S7/20; G01R; G01R13/00; G01R13/20; G01R13/206
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
196 words
A RADAR-OPERATED POSITION INDICATING SYSTEM HAVING, IN COMBINATION, A CATHODE RAY STORAGE TUBE HAVING A STORAGE SCREEN, A WRITING GUN AND A READING GUN, AN ALTITUDE COMPUTER, A RADAR UNIT TO FURNISH SIGNALS TO THE COMPUTER AND RANGE X- AND Y-DEFLECTION SIGNALS TO THE WRITING GUN, SAID SIGNALS CORRESPONDING TO AIRCRAFT POSITIONS, THE COMPUTER HAVING A CIRCUIT TO PRODUCE A SIGNAL CONNECTED TO SAID WRITING GUN TO PRODUCE A CHARGE ON SAID SCREEN WHICH IS VARIABLE IN MAGNITUDE AS A FUNCTION OF THE ALTITUDE OF THE AIRCRAFT, A DISPLAY TUBE HAVING A DISPLAY GUN, A SCREEN OSCILLATING SUBSTANTIALLY IN A DIRECTION NORMAL TO ITS SURFACE AND A Z-PICKUP DEVICE OPERATED BY MOVEMENT OF THE OSCILLATING SCREEN, A SWEEP GENERATOR SYNCHRONOUSLY OPERATING THE SWEEP CIRCUITS OF THE READING AND DISPLAY GUNS, AND A Z-GATE CIRCUIT CONNECTED TO RECEIVE A SIGNAL FROM THE READING GUN CORRESPONDING TO THE AMPLITUDE OF THE CHARGE STORED ON THE STORAGE SCREEN, TO RECEIVE A SIGNAL FROM THE Z-PICKUP DEVICE WHICH VARIES AS A FUNCTION OF THE POSITION OF THE OSCILLATING SCREEN, AND TO GATE THE BEAM OF THE DISPLAY TUBE AT THE MOMENT WHEN THE RECEIVED SIGNALS ARE IN A PREDETERMINED RELATIONSHIP.
Claim 2
Dependent Claim
196 words
A RADAR-OPERATED POSITION INDICATING SYSTEM HAVING, IN COMBINATION, A CATHODE RAY STORAGE TUBE HAVING A STORAGE SCREEN, A WRITING GUN AND A READING GUN, AN ALTITUDE COMPUTER, A RADAR UNIT TO FURNISH SIGNALS TO THE COMPUTER AND RANGE X- AND Y-DEFLECTION SIGNALS TO THE WRITING GUN, SAID SIGNALS CORRESPONDING TO AIRCRAFT POSITIONS, THE COMPUTER HAVING A CIRCUIT TO PRODUCE A SIGNAL CONNECTED TO SAID WRITING GUN TO PRODUCE A CHARGE ON SAID SCREEN WHICH IS VARIABLE IN MAGNITUDE AS A FUNCTION OF THE ALTITUDE OF THE AIRCRAFT, A DISPLAY TUBE HAVING A DISPLAY GUN, A SCREEN OSCILLATING SUBSTANTIALLY IN A DIRECTION NORMAL TO ITS SURFACE AND A Z-PICKUP DEVICE OPERATED BY MOVEMENT OF THE OSCILLATING SCREEN, A SWEEP GENERATOR SYNCHRONOUSLY OPERATING THE SWEEP CIRCUITS OF THE READING AND DISPLAY GUNS, AND A Z-GATE CIRCUIT CONNECTED TO RECEIVE A SIGNAL FROM THE READING GUN CORRESPONDING TO THE AMPLITUDE OF THE CHARGE STORED ON THE STORAGE SCREEN, TO RECEIVE A SIGNAL FROM THE Z-PICKUP DEVICE WHICH VARIES AS A FUNCTION OF THE POSITION OF THE OSCILLATING SCREEN, AND TO GATE THE BEAM OF THE DISPLAY TUBE AT THE MOMENT WHEN THE RECEIVED SIGNALS ARE IN A PREDETERMINED RELATIONSHIP.
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) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |