Patent US3293581A successfully refreshed from Google Patents.
US3293581A
Expired / Lapsed
US
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Wide linear range inductively coupled sensing device
Assignee: JOHN JOYCE Inc
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Filing: 1960-08-10
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Granted: 1966-12-20
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Expires: 1980-08-10
Abstract
No abstract record available.
Inventors
- 👤 Joyce John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:15
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/02; G05D1/021; G05D1/0259; G05D1/0265; H; H01; H01B; H01B11/00; H01B11/02; H01B11/12; H01B11/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
IN COMBINATION, FIRST AND SECOND CIRCUITS, SAID FIRST CIRCUIT INCLUDING A FIRST MEMBER HAVING A MAGNETIC FIELD AT LEAST WHEN CURRENT IS FLOWING THERETHROUGH, SAID SECOND CIRCUIT INCLUDING A CABLE MEMBER EXTENDING IN SPACED RELATION T THE FIELD OF SAID FIRST MEMBER AND TO ITS PATH, SAID CABLE MEMBER INCLUDING A LENGTHWISE CORE COMPRISING A SERIES OF SPACED MAGNETIC PORTIONS, A CONDUCTOR PORTION IN THE FORM OF A COIL ABOUT SAID CORE, AND MEANS INSULATING SAID PORTIONS FROM EACH OTHER, ONE OF SAID MEMBERS BEING MOVABLE RELATIVE TO THE OTHER AND ONE OF SAID CIRCUITS INCLUDING A CURRENT SOURCE, SAID RELATIVE MOVEMENT BEING ATTENDED BY AN INDUCED CURRENT IN THE OTHER CIRCUIT.
Claim 2
Dependent Claim
112 words
IN COMBINATION, FIRST AND SECOND CIRCUITS, SAID FIRST CIRCUIT INCLUDING A FIRST MEMBER HAVING A MAGNETIC FIELD AT LEAST WHEN CURRENT IS FLOWING THERETHROUGH, SAID SECOND CIRCUIT INCLUDING A CABLE MEMBER EXTENDING IN SPACED RELATION T THE FIELD OF SAID FIRST MEMBER AND TO ITS PATH, SAID CABLE MEMBER INCLUDING A LENGTHWISE CORE COMPRISING A SERIES OF SPACED MAGNETIC PORTIONS, A CONDUCTOR PORTION IN THE FORM OF A COIL ABOUT SAID CORE, AND MEANS INSULATING SAID PORTIONS FROM EACH OTHER, ONE OF SAID MEMBERS BEING MOVABLE RELATIVE TO THE OTHER AND ONE OF SAID CIRCUITS INCLUDING A CURRENT SOURCE, SAID RELATIVE MOVEMENT BEING ATTENDED BY AN INDUCED CURRENT IN THE OTHER CIRCUIT.
References Cited (Backward Citations)
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US2651762A
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US2447212A
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US2567394A
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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 |