US3160803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical circuits for sensing the relative position of two parts
Assignee: EMI Ltd
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Filing: 1962-08-09
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Granted: 1964-12-08
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Expires: 1982-08-09
Abstract
No abstract record available.
Inventors
- 👤 White Eric Lawrence Casling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:00
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/182; G05B19/186; B; B23; B23Q; B23Q15/00; H; H02; H02P; H02P5/00; H02P5/46; H02P5/52; H02P5/56; H03; H03M; H03M1/00; G05B2219/00; G05B2219/30; G05B2219/37; G05B2219/37473; G05B2219/45; G05B2219/45215; H03M1/12; H03M1/60; Y; Y02; Y02P; Y02P70/00; Y02P70/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
AN ELECTRICAL CIRCUIT COMPRISING A FIRST SOURCE OF REFERENCE OSCILLATIONS OF A FIRST FREQUENCY, A SECOND SOURCE OF REFERENCE OSCILLATIONS OF A SECOND FREQUENCY DIFFERENT FROM SAID FIRST FREQUENCY, A FIRST CHANNEL INCLUDING A FIRST RESOLVER FOR PHASE MODULATING OSCILLATIONS FROM SAID FIRST SOURCE IN RESPONSE TO THE SETTING OF SAID FIRST RESOLVER, A SECOND CHANNEL INCLUDING A SECOND RESOLVER FOR PHASE MODULATING OSCILLATION FROM SAID SECOND SOURCE IN RESPONSE TO THE SETTING OF SAID SECOND RESOLVER, FREQUENCY DIVIDING MEANS FOR AT LEAST ONE OF SAID PHASE MODULATED OSCILLATIONS SUCH THAT THE FREQUENCIES OF THE OUTPUTS OF SAID CHANNELS ARE EQUAL, AND PHASE SENSITIVE MEANS FOR COMPARING THE PHASES OF THE OUTPUTS OF SAID FREQUENCY DIVIDERS, WHEREBY AN OUTPUT SIGNAL OF SAID PHASE SENSITIVE MEANS REPRESENTS THE RELATIVE SETTINGS OF SAID FIRST AND SECOND RESOLVERS ON DIFFERENT SCALES.
Claim 2
Dependent Claim
138 words
AN ELECTRICAL CIRCUIT COMPRISING A FIRST SOURCE OF REFERENCE OSCILLATIONS OF A FIRST FREQUENCY, A SECOND SOURCE OF REFERENCE OSCILLATIONS OF A SECOND FREQUENCY DIFFERENT FROM SAID FIRST FREQUENCY, A FIRST CHANNEL INCLUDING A FIRST RESOLVER FOR PHASE MODULATING OSCILLATIONS FROM SAID FIRST SOURCE IN RESPONSE TO THE SETTING OF SAID FIRST RESOLVER, A SECOND CHANNEL INCLUDING A SECOND RESOLVER FOR PHASE MODULATING OSCILLATION FROM SAID SECOND SOURCE IN RESPONSE TO THE SETTING OF SAID SECOND RESOLVER, FREQUENCY DIVIDING MEANS FOR AT LEAST ONE OF SAID PHASE MODULATED OSCILLATIONS SUCH THAT THE FREQUENCIES OF THE OUTPUTS OF SAID CHANNELS ARE EQUAL, AND PHASE SENSITIVE MEANS FOR COMPARING THE PHASES OF THE OUTPUTS OF SAID FREQUENCY DIVIDERS, WHEREBY AN OUTPUT SIGNAL OF SAID PHASE SENSITIVE MEANS REPRESENTS THE RELATIVE SETTINGS OF SAID FIRST AND SECOND RESOLVERS ON DIFFERENT SCALES.
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) | 1967-12-08 | 1968-06-08 | 1968-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-08 | 1972-06-08 | 1972-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-08 | 1976-06-08 | 1976-12-08 | $7700.00 | Window Closed / Lapsed |