US3384816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Angular measurement device
Assignee: Boeing North American Inc
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Filing: 1962-02-13
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Granted: 1968-05-21
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Expires: 1982-02-13
Abstract
No abstract record available.
Inventors
- 👤 Edgar B Romberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:07
CPC Classifications
G; G01; G01P; G01P3/00; G01P3/42; G01P3/44; G01P3/48; G01P3/481
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
IN A CAPACITIVE PICKOFF DEVICE, A HOLLOW CYLINDRICAL MEMBER HAVING A PLURALITY OF TOOTH-LIKE PROJECTIONS FORMED AROUND THE CIRCUMFERENCE OF THE INNER WALL THEREOF, MEANS FOR ROTATABLY SUPPORTING SAID CYLINDRICAL MEMBER, FIRST AND SECOND PAIRS OF SIMILAR RING-SHAPED MEMBERS HAVING A PLURALITY OF SIMILAR TOOTH-LIKE PROJECTIONS FORMED AROUND THE CIRCUMFERENCE OF THE OUTER WALLS THEREOF, MEANS FOR FIXEDLY SUPPORTING SAID RING-SHAPED MEMBERS WITHIN SAID CYLINDRICAL MEMBER AND IN CONCENTRICITY THEREWITH WITH SAID RING-SHAPED MEMBER PROJECTIONS PROXIMATE TO SAID CYLINDRICAL MEMBER PROJECTIONS, A SEPARATE TRANSFORMER CONNECTED TO EACH OF SAID PAIRS OF RING-SHAPED MEMBERS, AN A-C REFERENCE SOURCE CONNECTED BETWEEN SAID TRANSFORMERS AND SAID CYLINDRICAL MEMBER, A DEMODULATOR CONNECTED TO RECEIVE THE OUTPUT OF EACH OF SAID TRANSFORMERS, AND DIGITAL PROCESSING MEANS CONNECTED TO RECEIVE THE OUTPUTS OF SAID DEMODULATORS.
Claim 2
Dependent Claim
129 words
IN A CAPACITIVE PICKOFF DEVICE, A HOLLOW CYLINDRICAL MEMBER HAVING A PLURALITY OF TOOTH-LIKE PROJECTIONS FORMED AROUND THE CIRCUMFERENCE OF THE INNER WALL THEREOF, MEANS FOR ROTATABLY SUPPORTING SAID CYLINDRICAL MEMBER, FIRST AND SECOND PAIRS OF SIMILAR RING-SHAPED MEMBERS HAVING A PLURALITY OF SIMILAR TOOTH-LIKE PROJECTIONS FORMED AROUND THE CIRCUMFERENCE OF THE OUTER WALLS THEREOF, MEANS FOR FIXEDLY SUPPORTING SAID RING-SHAPED MEMBERS WITHIN SAID CYLINDRICAL MEMBER AND IN CONCENTRICITY THEREWITH WITH SAID RING-SHAPED MEMBER PROJECTIONS PROXIMATE TO SAID CYLINDRICAL MEMBER PROJECTIONS, A SEPARATE TRANSFORMER CONNECTED TO EACH OF SAID PAIRS OF RING-SHAPED MEMBERS, AN A-C REFERENCE SOURCE CONNECTED BETWEEN SAID TRANSFORMERS AND SAID CYLINDRICAL MEMBER, A DEMODULATOR CONNECTED TO RECEIVE THE OUTPUT OF EACH OF SAID TRANSFORMERS, AND DIGITAL PROCESSING MEANS CONNECTED TO RECEIVE THE OUTPUTS OF SAID DEMODULATORS.
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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) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |