US3180977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversion of rectangular co-ordinates into polar co-ordinates
Assignee: US Philips Corp
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Filing: 1962-07-03
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Granted: 1965-04-27
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Expires: 1982-07-03
Abstract
No abstract record available.
Inventors
- 👤 Brakel Johannes Abraham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:21
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/22; G01; G01R; G01R25/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A CO-ORDINATE COVERTER FOR CONVERTING RETANGULAR CO-ORDINATES INTO POLAR CO-ORDINATES, COMPRISING: A RESONANT CIRCUIT INCLUDING AN INDICATOR AND A CAPACITOR, MEANS FOR EXCITING TWO 90* PHASE-SHIFTED NATURAL OSCILLATIONS OF THE RESONANT CIRCUIT, THE AMPLITUDES OF SAID OSCILLATIONS CORRESPONDING TO RECTANGULAR CO-ORDINATES, A PEAK-VALUE DETECTOR FOR DETECTING THE PEAK VALUE OF THE COMPOSITE OSCILLATION COMPOSED OF SAID TWO OSCILLATIONS, AND A PHASEMEASURING DEVICE FOR MEASURING THE PHASE OF THE COMPOSITE OSCILLATIONS.
Claim 2
Dependent Claim
70 words
A CO-ORDINATE COVERTER FOR CONVERTING RETANGULAR CO-ORDINATES INTO POLAR CO-ORDINATES, COMPRISING: A RESONANT CIRCUIT INCLUDING AN INDICATOR AND A CAPACITOR, MEANS FOR EXCITING TWO 90* PHASE-SHIFTED NATURAL OSCILLATIONS OF THE RESONANT CIRCUIT, THE AMPLITUDES OF SAID OSCILLATIONS CORRESPONDING TO RECTANGULAR CO-ORDINATES, A PEAK-VALUE DETECTOR FOR DETECTING THE PEAK VALUE OF THE COMPOSITE OSCILLATION COMPOSED OF SAID TWO OSCILLATIONS, AND A PHASEMEASURING DEVICE FOR MEASURING THE PHASE OF THE COMPOSITE OSCILLATIONS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-26 | 1968-10-26 | 1969-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-26 | 1972-10-26 | 1973-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-26 | 1976-10-26 | 1977-04-27 | $7700.00 | Window Closed / Lapsed |