Patent US3346841A successfully refreshed from Google Patents.
US3346841A
Expired / Lapsed
US
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Magnetostrictive acoustic transducers
Assignee: PRAKLA GES fur PRAKTISCHE LAGE
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Filing: 1967-02-28
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Granted: 1967-10-10
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Expires: 1987-02-28
Abstract
No abstract record available.
Inventors
- 👤 Weichart Helmut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:37
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/02; B06B1/06; B06B1/0644; B06B1/0655; B06B1/08; G; G01; G01V; G01V1/00; G01V1/16; G01V1/20; G01V1/201
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A MAGNETOSTRICTIVE ACOUSTIC TRANSDUCER COMPRISING IN COMBINATION: A SUPPORT HAVING A CENTRAL AXIS, A LONGITUDINAL EXTENSION PARALLEL TO SAID AXIS AND OF A LIMITED DIAMETER PERPENDICULAR TO SAID AXIS, AT LEAST ONE PIECE OF MAGNETOSTRICTIVE MATERIAL OF SUBSTANTIALLY ARCHED CONFIGURATION MOUNTED ON SAID SUPPORT, SAID PIECE EXTENDING OVER A LIMITED ARC AROUND SAID AXIS, SAID ARCHED PIECE HAVING AN OPENING THE DIAMETER OF WHICH IS LARGER THAN SAID LIMITED DIAMETER OF SAID SUPPORT, SAID PIECE HAVING OPPOSED END PORTIONS, AT LEAST ONE PIECE OF FERROMAGNETIC MATERIAL HAVING OPPOSED ENDS WHICH CLOSELY ENGAGE SAID OPPOSED END PORTIONS OF SAID MAGNETOSTRICTIVE PIECE, THEREBY FORMING A CLOSED MAGNETOSTRICTIVE CIRCUIT, AND A PLURRALITY OF CONDUCTOR WINDINGS COILED AROUND SAID PIECE OF MAGNETOSTRICTIVE MATERIAL,
Claim 2
Dependent Claim
119 words
A MAGNETOSTRICTIVE ACOUSTIC TRANSDUCER COMPRISING IN COMBINATION: A SUPPORT HAVING A CENTRAL AXIS, A LONGITUDINAL EXTENSION PARALLEL TO SAID AXIS AND OF A LIMITED DIAMETER PERPENDICULAR TO SAID AXIS, AT LEAST ONE PIECE OF MAGNETOSTRICTIVE MATERIAL OF SUBSTANTIALLY ARCHED CONFIGURATION MOUNTED ON SAID SUPPORT, SAID PIECE EXTENDING OVER A LIMITED ARC AROUND SAID AXIS, SAID ARCHED PIECE HAVING AN OPENING THE DIAMETER OF WHICH IS LARGER THAN SAID LIMITED DIAMETER OF SAID SUPPORT, SAID PIECE HAVING OPPOSED END PORTIONS, AT LEAST ONE PIECE OF FERROMAGNETIC MATERIAL HAVING OPPOSED ENDS WHICH CLOSELY ENGAGE SAID OPPOSED END PORTIONS OF SAID MAGNETOSTRICTIVE PIECE, THEREBY FORMING A CLOSED MAGNETOSTRICTIVE CIRCUIT, AND A PLURRALITY OF CONDUCTOR WINDINGS COILED AROUND SAID PIECE OF MAGNETOSTRICTIVE MATERIAL,
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-09 | 1971-04-10 | 1971-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-09 | 1975-04-10 | 1975-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-09 | 1979-04-10 | 1979-10-10 | $7700.00 | Window Closed / Lapsed |