US3234491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transducer having coil sections of varying inside and outside diameter
Assignee: WM Ainsworth and Sons Inc
•
Filing: 1959-12-04
•
Granted: 1966-02-08
•
Expires: 1979-12-04
Abstract
No abstract record available.
Inventors
- 👤 Baur Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:13
CPC Classifications
G; G01; G01G; G01G7/00; G01G7/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
AN INDUCTANCE SENSITIVE TRANSDUCER COMPRISING A PAIR OF COILS DISPOSED IN AXIAL RELATION, EACH SAID COIL INCLUDING TWO RADIALLY OFFSET SECTIONS WITH THE SECTIONS ADJACENT THE OPPOSITE COIL HAVING A GREATER INSIDE AND OUTSIDE DIAMETER THAN THE SECTIONS REMOTE FROM THE OPPOSITE COIL; A PROBE DISPOSED CENTRALLY WITHIN SAID COILS, SAID PROBE AND COILS BEING MOUNTED FOR RELATIVE AXIAL MOVEMENT BETWEEN; AND MEANS FOR SUPPLYING A HIGH FREQUENCY ALTERNATING CURENT TO SAID COILS, THROUGH SEPARATE LEADS TO THE OUTER END OF EACH COIL AND A COMMON LEAD TO THE INNER END OF BOTH COILS.
Claim 2
Dependent Claim
94 words
AN INDUCTANCE SENSITIVE TRANSDUCER COMPRISING A PAIR OF COILS DISPOSED IN AXIAL RELATION, EACH SAID COIL INCLUDING TWO RADIALLY OFFSET SECTIONS WITH THE SECTIONS ADJACENT THE OPPOSITE COIL HAVING A GREATER INSIDE AND OUTSIDE DIAMETER THAN THE SECTIONS REMOTE FROM THE OPPOSITE COIL; A PROBE DISPOSED CENTRALLY WITHIN SAID COILS, SAID PROBE AND COILS BEING MOUNTED FOR RELATIVE AXIAL MOVEMENT BETWEEN; AND MEANS FOR SUPPLYING A HIGH FREQUENCY ALTERNATING CURENT TO SAID COILS, THROUGH SEPARATE LEADS TO THE OUTER END OF EACH COIL AND A COMMON LEAD TO THE INNER END OF BOTH COILS.
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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) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |