US3239826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transducer apparatus
Assignee: EIDP Inc
•
Filing: 1962-04-03
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Granted: 1966-03-08
•
Expires: 1982-04-03
Abstract
No abstract record available.
Inventors
- 👤 Edward W Yetter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:05
CPC Classifications
H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/0302; H01F1/0306; G; G01; G01K; G01K1/00; G01K1/02; G01K1/024; G01K7/00; G01K7/36; G01K7/38; G01L; G01L9/00; G01L9/16; H01F1/0009
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
A TRANSDUCER APPARATUS RESPONSIVE TO TEMPERATURE, PRESSURE AND MAGNETIC FIELD COMPRISING AN ELECTRICAL INDUCTOR PROVIDED WITH A CORE CONSISTING AT LEAST IN PART OF A SUBSTANCE HAVING A CURIE POINT AT A PREDETERMINED TEMPERATURE AND WHICH DISPLAYS A CHANGE IN PERMEABILITY WITH RETENTION OF CRYSTAL SYMMETRY BELOW THAT TEMPERATURE CHARACTERIZED IN THAT THE MAGNETIC STATE REVERTS FROM PARAMAGNETIC OR ANTIFERROMAGNETIC ON THE ONE HAND TO FERROMAGNETIC OR FERRIMAGNETIC ON THE OTHER CONCOMITANT WITH A FIRST ORDER TRANSITION FROM ONE SOLID STATE PHASE TO A SECOND SOLID STATE PHASE AND AN ELECTRICAL CONDUCTOR WRAPPED AROUND SAID CORE, SAID CORE BEING EXPOSED TO THE ENVIRONMENT EVINCING CHANGE IN TEMPERATURE, PRESSURE AND MAGNETIC FIELD, POWERING MEANS IN CIRCUIT WITH SAID CONDUCTOR DELIVERING AN ELECTRICAL CURRENT THERETHROUGH, AND MEANS RESPONSIVE TO THE VARIANCE OF SAID ELECTRICAL CURRENT AS A FUNCTION OF THE INDUCTANCE POSSESSED BY SAID INDUCTOR IN TRAVERSAL OF SAID FIRST-ORDER TRANSITION FOR INDICATING THE VARIATION IN EXISTING TEMPERATURE, PRESSURE, AND MAGNETIC FIELD STATE OF SAID ENVIRONMENT.
Claim 2
Dependent Claim
164 words
A TRANSDUCER APPARATUS RESPONSIVE TO TEMPERATURE, PRESSURE AND MAGNETIC FIELD COMPRISING AN ELECTRICAL INDUCTOR PROVIDED WITH A CORE CONSISTING AT LEAST IN PART OF A SUBSTANCE HAVING A CURIE POINT AT A PREDETERMINED TEMPERATURE AND WHICH DISPLAYS A CHANGE IN PERMEABILITY WITH RETENTION OF CRYSTAL SYMMETRY BELOW THAT TEMPERATURE CHARACTERIZED IN THAT THE MAGNETIC STATE REVERTS FROM PARAMAGNETIC OR ANTIFERROMAGNETIC ON THE ONE HAND TO FERROMAGNETIC OR FERRIMAGNETIC ON THE OTHER CONCOMITANT WITH A FIRST ORDER TRANSITION FROM ONE SOLID STATE PHASE TO A SECOND SOLID STATE PHASE AND AN ELECTRICAL CONDUCTOR WRAPPED AROUND SAID CORE, SAID CORE BEING EXPOSED TO THE ENVIRONMENT EVINCING CHANGE IN TEMPERATURE, PRESSURE AND MAGNETIC FIELD, POWERING MEANS IN CIRCUIT WITH SAID CONDUCTOR DELIVERING AN ELECTRICAL CURRENT THERETHROUGH, AND MEANS RESPONSIVE TO THE VARIANCE OF SAID ELECTRICAL CURRENT AS A FUNCTION OF THE INDUCTANCE POSSESSED BY SAID INDUCTOR IN TRAVERSAL OF SAID FIRST-ORDER TRANSITION FOR INDICATING THE VARIATION IN EXISTING TEMPERATURE, PRESSURE, AND MAGNETIC FIELD STATE OF SAID ENVIRONMENT.
References Cited (Backward Citations)
US1586877A
Cited
US2991414A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |