Patent US3307405A successfully refreshed from Google Patents.
US3307405A
Expired / Lapsed
US
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Ferrimagnetic pressure transducer
Assignee: Lockheed Martin Corp
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Filing: 1964-05-27
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Granted: 1967-03-07
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Expires: 1984-05-27
Abstract
No abstract record available.
Inventors
- 👤 Frank F Stucki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:09
CPC Classifications
G; G01; G01P; G01P15/00; G01P15/02; G01P15/08; G01P15/0885; G01L; G01L23/00; G01L9/00; G01L9/16; Y; Y10; Y10S; Y10S73/00; Y10S73/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A FERRIMAGNETIC TRANSDUCER FOR MEASURING HYDROSTATIC OR UNIDIRECTIONAL PRESSURES COMPRISING A FERRITE CORE HAVING A CURIE TEMPERATURE OF AT LEAST 750*C., WHICH CAUSES SAID CORE TO BE PRESSURE-SENSITIVE, PULSE GENERATING MEANS ELECTRICALLY COUPLED TO SAID CORE FOR ENERGIZING AND DE-ENERGIZING SAID CORE, AND MEANS MAGNETICALLY COUPLED TO SAID CORE FOR MEASURING AN OUTPUT SIGNAL THEREFROM WHICH CORRESPONDS TO THE MAGNITUDE OF PRESSURE EXERTED ON SAID CORE, SAID OUTPUT SIGNAL BEING SUBSTANTIALLY PROPORTIONAL TO THE EXERTED PRESSURE.
Claim 2
Dependent Claim
76 words
A FERRIMAGNETIC TRANSDUCER FOR MEASURING HYDROSTATIC OR UNIDIRECTIONAL PRESSURES COMPRISING A FERRITE CORE HAVING A CURIE TEMPERATURE OF AT LEAST 750*C., WHICH CAUSES SAID CORE TO BE PRESSURE-SENSITIVE, PULSE GENERATING MEANS ELECTRICALLY COUPLED TO SAID CORE FOR ENERGIZING AND DE-ENERGIZING SAID CORE, AND MEANS MAGNETICALLY COUPLED TO SAID CORE FOR MEASURING AN OUTPUT SIGNAL THEREFROM WHICH CORRESPONDS TO THE MAGNITUDE OF PRESSURE EXERTED ON SAID CORE, SAID OUTPUT SIGNAL BEING SUBSTANTIALLY PROPORTIONAL TO THE EXERTED PRESSURE.
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) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |