US3195039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic transducer
Assignee: Northrop Grumman Corp
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Filing: 1960-04-28
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Granted: 1965-07-13
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Expires: 1980-04-28
Abstract
No abstract record available.
Inventors
- 👤 Menno G Koning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:00
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/14; H; H01; H01F; H01F29/00; H01F29/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A TRANSDUCER COMPRISING A CIRCULAR STATOR RING OF MAGNETIC MATERIAL, AT LEAST A PAIR OF EXCITATION COILS WOUND ON SAID RING AT EQUALLY SPACED POINTS, MEANS FOR ENERGIZING SAID EXCITATION COILS TO SET UP OPPOSING MAGNETIC FLUXES IN SAID RING, A ROTOR ELEMENT HAVING AT LEAST A PAIR OF POLE FACES, SAID ROTOR ELEMENT BEING DISPOSED WITHIN SAID STATOR RING AND PROVIDING A RETURN PATH FOR SAID MAGNETIC FLUXES, POINTS OF FLUX REVERSAL BEING ESTABLISHED IN SAID STATOR RING OPPOSITE SAID POLE FACES, EACH SAID POLE FACE HAVING THE SHAPE OF AN ARC OF A CIRCLE CONCENTRIC WITH SAID STATOR RING, AT LEAST A TORQUER WINDING ON SAID ROTOR AND AT LEAST A PICK-OFF COIL WOUND ON SAID STATOR RING BETWEEN SAID EXCITATION COILS.
Claim 2
Dependent Claim
124 words
A TRANSDUCER COMPRISING A CIRCULAR STATOR RING OF MAGNETIC MATERIAL, AT LEAST A PAIR OF EXCITATION COILS WOUND ON SAID RING AT EQUALLY SPACED POINTS, MEANS FOR ENERGIZING SAID EXCITATION COILS TO SET UP OPPOSING MAGNETIC FLUXES IN SAID RING, A ROTOR ELEMENT HAVING AT LEAST A PAIR OF POLE FACES, SAID ROTOR ELEMENT BEING DISPOSED WITHIN SAID STATOR RING AND PROVIDING A RETURN PATH FOR SAID MAGNETIC FLUXES, POINTS OF FLUX REVERSAL BEING ESTABLISHED IN SAID STATOR RING OPPOSITE SAID POLE FACES, EACH SAID POLE FACE HAVING THE SHAPE OF AN ARC OF A CIRCLE CONCENTRIC WITH SAID STATOR RING, AT LEAST A TORQUER WINDING ON SAID ROTOR AND AT LEAST A PICK-OFF COIL WOUND ON SAID STATOR RING BETWEEN SAID EXCITATION COILS.
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) | 1968-07-12 | 1969-01-11 | 1969-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-12 | 1973-01-11 | 1973-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-12 | 1977-01-11 | 1977-07-13 | $7700.00 | Window Closed / Lapsed |