Patent US3450865A successfully refreshed from Google Patents.
US3450865A
Expired / Lapsed
US
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Methods and devices for generating a curve
Assignee: Renault SA
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Filing: 1963-01-29
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Granted: 1969-06-17
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Expires: 1983-01-29
Abstract
No abstract record available.
Inventors
- 👤 Lucien Peras
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:54
CPC Classifications
G; G06; G06K; G06K15/00; G06K15/22; B; B23; B23B; B23B3/00; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/41; G05B19/4105
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
AN APPARATUS FOR GENERATING A CURVE CORRESPONDING TO A CURVE UPON WHICH A NUMBER OF DATA CORRESPONDING TO ELEMENTARY ARCS OF THE CURVE ARE DERIVED IN THE FORM OF COORDINATES OF A LIMITED NUMBER OF POINTS PLOTTED ON THE CURVE, SAID APPARATUS COMPRISING MEANS SUCCESSIVELY RECORDING IN A DIGITAL SYSTEM THE DATA OF SAID ELEMENTARY ARCS, TRACING MEANS, AN ANALOG COMPUTER CONTROLLING SAID TRACING MEANS, AND FEEDING MEANS FEEDING SAID DATA FOR EACH ELEMENTARY ARC FROM SAID RECORDING MEANS TO SAID ANALOG COMPUTER WHICH GENERATES THE MAGNITUDES REPRESENTING THE COORDINATES OF SUCCESSIVE POINTS OF SAID ELEMENTARY ARC FROM A PARAMETRIC EQUATION OF AN INTERPOLATION CURVE SUCH THAT THE TERMS OF SAID EQUATION COMPRISE THE DATA OF THE POINTS DEFINING SAID ELEMENTARY ARC, MEANS FOR AUTOMATICALLY SENSING AND MEASURING THE DATA OF THE POINT ATTAINED BY SAID TRACING MEANS UPON COMPLETION OF ITS TRACING AND ELEMENTARY ARC AND MEASURING THESE DATA WITH VALUES CONSTITUTING THE THEORETICAL DATA, AND COMPENSATING MEANS COUPLING TO SAID ANALOG COMPUTER THE DIFFERENCE SIGNAL RESULTING FROM SAID LAST MENTIONED MEANS FOR COMPENSATING THE GENERATION OF THE NEXT ELEMENTARY ARC.
Claim 2
Independent Claim
182 words
AN APPARATUS FOR GENERATING A CURVE CORRESPONDING TO A CURVE UPON WHICH A NUMBER OF DATA CORRESPONDING TO ELEMENTARY ARCS OF THE CURVE ARE DERIVED IN THE FORM OF COORDINATES OF A LIMITED NUMBER OF POINTS PLOTTED ON THE CURVE, SAID APPARATUS COMPRISING MEANS SUCCESSIVELY RECORDING IN A DIGITAL SYSTEM THE DATA OF SAID ELEMENTARY ARCS, TRACING MEANS, AN ANALOG COMPUTER CONTROLLING SAID TRACING MEANS, AND FEEDING MEANS FEEDING SAID DATA FOR EACH ELEMENTARY ARC FROM SAID RECORDING MEANS TO SAID ANALOG COMPUTER WHICH GENERATES THE MAGNITUDES REPRESENTING THE COORDINATES OF SUCCESSIVE POINTS OF SAID ELEMENTARY ARC FROM A PARAMETRIC EQUATION OF AN INTERPOLATION CURVE SUCH THAT THE TERMS OF SAID EQUATION COMPRISE THE DATA OF THE POINTS DEFINING SAID ELEMENTARY ARC, MEANS FOR AUTOMATICALLY SENSING AND MEASURING THE DATA OF THE POINT ATTAINED BY SAID TRACING MEANS UPON COMPLETION OF ITS TRACING AND ELEMENTARY ARC AND MEASURING THESE DATA WITH VALUES CONSTITUTING THE THEORETICAL DATA, AND COMPENSATING MEANS COUPLING TO SAID ANALOG COMPUTER THE DIFFERENCE SIGNAL RESULTING FROM SAID LAST MENTIONED MEANS FOR COMPENSATING THE GENERATION OF THE NEXT ELEMENTARY ARC.
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) | 1972-06-16 | 1972-12-16 | 1973-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-16 | 1976-12-16 | 1977-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-16 | 1980-12-16 | 1981-06-17 | $7700.00 | Window Closed / Lapsed |