US3293636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic flux responsive sensing device
Assignee: Unimation Inc
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Filing: 1963-07-22
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Granted: 1966-12-20
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Expires: 1983-07-22
Abstract
No abstract record available.
Inventors
- 👤 Maurice J Dunne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:05
CPC Classifications
B; B61; B61H; B61H13/00; B61H13/02; B61H13/04; G; G11; G11B; G11B5/00; G11B5/02; G11B5/10; G11B5/105; G11B5/127; G11B5/33; H; H03; H03M; H03M1/00; H03M1/12; H03M1/22; H03M1/24; H03M1/245; H03M1/28; H03M1/30; H03M1/301
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
A POLARITY SENSITIVE DEVICE FOR SENSING LOW MAGNITUDE MAGNETIC FIELDS OF PREDETERMINED POLARITY, COMPRISING MAGNETIC CORE MEANS INCLUDING A PAIR OF SYMMETRICALLY POSITIONED CORE ELEMENTS, A FEEDBACK WINDING ON EACH OF SAID CORE ELEMENTS, AN ELECTRON CONTROL DEVICE HAVING A CONTROL ELECTRODE AND AN OUTPUT ELECTRODE, MEANS CONNECTING SAID FEEDBACK WINDINGS IN SERIES OPPOSITION TO SAID CONTROL ELECTRODE, MEANS FOR COUPLING ENERGY FROM THE OUTPUT ELECTRODE CIRCUIT OF SAID CONTROL DEVICE TO SAID FEEDBACK WINDINGS, MEANS FOR ESTABLISHING OPPOSITELY DIRECTED MAGNETIC FLUXES LINKING SIAD FEEDBACK WINDINGS SO THAT THE SERIES COMBINATION OF SAID FEEDBACK WINDINGS IS BALANCED AND IS INEFFECTIVE TO PRODUCE SUSTAINED OSCILLATIONS, MEANS DEFINING AN EXTERNAL MAGNETIC FIELD OF PREDETERMINED ORIENTATION, MEANS FOR POSITIONING SAID FIELD DEFINING MEANS IN FLUX LINKING RELATION TO SAID CORE ELEMENTS TO UNBALANCE SAID SERIES COMBINATION OF SAID FEEDBACK WINDINGS IN A DIRECTION DEPENDENT UPON THE ORIENTATION OF SAID MAGNETIC FIELD, AND MEANS RESPONSIVE TO UNBALANCE OF SAID SERIES COMBINATION IN THE POSITIVE FEEDBACK DIRECTION FOR PRODUCING SUSTAINED OSCILLATIONS.
Claim 2
Dependent Claim
166 words
A POLARITY SENSITIVE DEVICE FOR SENSING LOW MAGNITUDE MAGNETIC FIELDS OF PREDETERMINED POLARITY, COMPRISING MAGNETIC CORE MEANS INCLUDING A PAIR OF SYMMETRICALLY POSITIONED CORE ELEMENTS, A FEEDBACK WINDING ON EACH OF SAID CORE ELEMENTS, AN ELECTRON CONTROL DEVICE HAVING A CONTROL ELECTRODE AND AN OUTPUT ELECTRODE, MEANS CONNECTING SAID FEEDBACK WINDINGS IN SERIES OPPOSITION TO SAID CONTROL ELECTRODE, MEANS FOR COUPLING ENERGY FROM THE OUTPUT ELECTRODE CIRCUIT OF SAID CONTROL DEVICE TO SAID FEEDBACK WINDINGS, MEANS FOR ESTABLISHING OPPOSITELY DIRECTED MAGNETIC FLUXES LINKING SIAD FEEDBACK WINDINGS SO THAT THE SERIES COMBINATION OF SAID FEEDBACK WINDINGS IS BALANCED AND IS INEFFECTIVE TO PRODUCE SUSTAINED OSCILLATIONS, MEANS DEFINING AN EXTERNAL MAGNETIC FIELD OF PREDETERMINED ORIENTATION, MEANS FOR POSITIONING SAID FIELD DEFINING MEANS IN FLUX LINKING RELATION TO SAID CORE ELEMENTS TO UNBALANCE SAID SERIES COMBINATION OF SAID FEEDBACK WINDINGS IN A DIRECTION DEPENDENT UPON THE ORIENTATION OF SAID MAGNETIC FIELD, AND MEANS RESPONSIVE TO UNBALANCE OF SAID SERIES COMBINATION IN THE POSITIVE FEEDBACK DIRECTION FOR PRODUCING SUSTAINED OSCILLATIONS.
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) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |