US3320409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic plotting device
Assignee: Unisys Corp
•
Filing: 1963-01-30
•
Granted: 1967-05-16
•
Expires: 1983-01-30
Abstract
No abstract record available.
Inventors
- 👤 Boyd T Larrowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:59
CPC Classifications
G; G06; G06K; G06K15/00; G06K15/22; G06G; G06G7/00; G06G7/12; G06G7/30; G09; G09G; G09G1/00; G09G1/06; G09G1/08; G09G1/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
195 words
A DEVICE FOR DRAWING A STRAIGHT LINE ON A PLOTTING SURFACE COMPRISING A PLURALITY OF PAIRS OF CONVERTERS, THE CONVERTER PAIRS STORING IN DIGITAL NOTATION THE X AND Y COORDINATES ON SAID SURFACE WHICH DEFINE THE INITIAL AND TERMINAL POINTS OF THE LINE, EACH CONVERTER STORING A DIFFERENT ONE OF THE COORDINATES OF ONE OF THE END POINTS, MEANS FOR CAUSING THE CONVERTERS WHICH STORE THE X AND Y COORDINATES OF THE INITIAL POINT OF THE LINE TO PRODUCE AN OUTPUT WHICH DECREASES LINEARLY FROM THE ANALOG OF THE STORED DIGITAL QUANTITIES TO ZERO IN A PREDETERMINED TIME, MEANS FOR SIMULTANEOUSLY CAUSING THE CONVERTERS WHICH STORE THE X AND Y COORDINATES OF THE TERMINAL POINT OF THE LINE TO PRODUCE AN OUTPUT WHICH INCREASES LINEARLY FROM ZERO TO THE ANALOG OF THE STORED DIGITAL QUANTITIES, MEANS FOR SUMMING THE ANALOG OUTPUTS FROM THE CONVERTERS WHICH STORE THE X COORDINATES, MEANS FOR SUMMING THE ANALOG OUTPUTS FROM THE CONVERTERS WHICH STORE THE Y COORDINATES, AND MEANS CONNECTED TO SAID SUMMING MEANS AND UTILIZING THE OUTPUTS THEREOF TO CONTROL THE TRANSFER OF A DRAWING MEANS ANALOG SAID PLOTTING SURFACE FROM SAID INITIAL POINT TO SAID TERMINAL POINT.
Claim 2
Independent Claim
195 words
A DEVICE FOR DRAWING A STRAIGHT LINE ON A PLOTTING SURFACE COMPRISING A PLURALITY OF PAIRS OF CONVERTERS, THE CONVERTER PAIRS STORING IN DIGITAL NOTATION THE X AND Y COORDINATES ON SAID SURFACE WHICH DEFINE THE INITIAL AND TERMINAL POINTS OF THE LINE, EACH CONVERTER STORING A DIFFERENT ONE OF THE COORDINATES OF ONE OF THE END POINTS, MEANS FOR CAUSING THE CONVERTERS WHICH STORE THE X AND Y COORDINATES OF THE INITIAL POINT OF THE LINE TO PRODUCE AN OUTPUT WHICH DECREASES LINEARLY FROM THE ANALOG OF THE STORED DIGITAL QUANTITIES TO ZERO IN A PREDETERMINED TIME, MEANS FOR SIMULTANEOUSLY CAUSING THE CONVERTERS WHICH STORE THE X AND Y COORDINATES OF THE TERMINAL POINT OF THE LINE TO PRODUCE AN OUTPUT WHICH INCREASES LINEARLY FROM ZERO TO THE ANALOG OF THE STORED DIGITAL QUANTITIES, MEANS FOR SUMMING THE ANALOG OUTPUTS FROM THE CONVERTERS WHICH STORE THE X COORDINATES, MEANS FOR SUMMING THE ANALOG OUTPUTS FROM THE CONVERTERS WHICH STORE THE Y COORDINATES, AND MEANS CONNECTED TO SAID SUMMING MEANS AND UTILIZING THE OUTPUTS THEREOF TO CONTROL THE TRANSFER OF A DRAWING MEANS ANALOG SAID PLOTTING SURFACE FROM SAID INITIAL POINT TO SAID TERMINAL POINT.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-15 | 1970-11-14 | 1971-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-15 | 1974-11-14 | 1975-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-15 | 1978-11-14 | 1979-05-16 | $7700.00 | Window Closed / Lapsed |