US3309654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acoustic apparatus
Assignee: General Dynamics Corp
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Filing: 1965-09-02
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Granted: 1967-03-14
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Expires: 1985-09-02
Abstract
No abstract record available.
Inventors
- 👤 Harry B Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:53
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/02; B06B1/06; B06B1/0607; B06B1/0611; B06B1/0618; G; G01; G01S; G01S1/00; G01S1/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A TRANSDUCER COMPRISING (A) A BACK MEMBER HAVING A MASS, (B) A PISTON, (C) A COLUMN OF MATERIAL EXHIBITING ELECTROMECHANICAL TRANSDUCING ACTION, (D) SAID COLUMN OF MATERIAL BEING DISPOSED BETWEEN SAID PISTON AND BACK MEMBER FOR VIBRATION IN A DIRECTION LONGITUDINALLY OF SAID COLUMN TO DEFINE A FIRST MECHANICAL MESH HAVING A RESONANT FREQUENCY FR, AND (E) MEANS FOR BIASING SAID COLUMN AND PISTON FOR FLEXURAL VIBRATION DEFINING A SECOND MECHANICAL MESH CLOSELY COUPLED TO SAID FIRST MESH AND HAVING A RESONANT FREQUENCY OF ABOUT 2FR.
Claim 2
Dependent Claim
86 words
A TRANSDUCER COMPRISING (A) A BACK MEMBER HAVING A MASS, (B) A PISTON, (C) A COLUMN OF MATERIAL EXHIBITING ELECTROMECHANICAL TRANSDUCING ACTION, (D) SAID COLUMN OF MATERIAL BEING DISPOSED BETWEEN SAID PISTON AND BACK MEMBER FOR VIBRATION IN A DIRECTION LONGITUDINALLY OF SAID COLUMN TO DEFINE A FIRST MECHANICAL MESH HAVING A RESONANT FREQUENCY FR, AND (E) MEANS FOR BIASING SAID COLUMN AND PISTON FOR FLEXURAL VIBRATION DEFINING A SECOND MECHANICAL MESH CLOSELY COUPLED TO SAID FIRST MESH AND HAVING A RESONANT FREQUENCY OF ABOUT 2FR.
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) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |