Patent US3274540A successfully refreshed from Google Patents.
US3274540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High energy sonic and ultra-sonic magnetostriction transducer
Assignee: Individual
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Filing: 1964-12-30
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Granted: 1966-09-20
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Expires: 1984-12-30
Abstract
No abstract record available.
Inventors
- 👤 Leonard J Melhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:28
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/02; B06B1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A TRANSDUCER COMPRISING: A STACK OF INDENTICAL LAMINATIONS OF MAGNETOSTRICTIVE MATERIAL PRESSED TIGHTLY TOGETHER TO FORM A TRANSDUCER CORE, AND AN ELONGATED TUBULAR ELEMENT AXIALLY SPLIT THROUGH ONE SIDE TO FORM A SINGLE TURN COIL, SAID SINGLE TURN COIL SURROUNDING AT LEAST ONE PORTION OF SAID TRANSDUCER CORE.
Claim 2
Dependent Claim
48 words
A TRANSDUCER COMPRISING: A STACK OF INDENTICAL LAMINATIONS OF MAGNETOSTRICTIVE MATERIAL PRESSED TIGHTLY TOGETHER TO FORM A TRANSDUCER CORE, AND AN ELONGATED TUBULAR ELEMENT AXIALLY SPLIT THROUGH ONE SIDE TO FORM A SINGLE TURN COIL, SAID SINGLE TURN COIL SURROUNDING AT LEAST ONE PORTION OF SAID TRANSDUCER CORE.
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) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |