US3246287A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piezoelectric transformer
Assignee: General Dynamics Corp
•
Filing: 1965-09-21
•
Granted: 1966-04-12
•
Expires: 1985-09-21
Abstract
No abstract record available.
Inventors
- 👤 Howard F Benson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:34
CPC Classifications
H; H10; H10N; H10N30/00; H10N30/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A PIEZOELECTRIC TRANSDUCER ADAPTED FOR USE IN SEAWATER AND LIKE IONIZABLE SOLUTES COMPRISING: A PIEZOELECTRIC DISC HAVING TWO CHARGE-COLLECTING FACES ELECTRICALLY INSULATED FROM EACH OTHER, SAID DISC BEING POSITIONED IN THE CENTER OPENING OF A FLATTENED TOROIDAL PICKOFF COIL, SAID TOROIDAL PICKOFF COIL SURROUNDING A TOROIDAL MAGNETIC CORE, SAID CORE BEING PROVIDED WITH A COATING OF INSULATING MATERIAL, AND INPUT LEADS OPERATIVELY CONNECTED TO SAID COIL WHEREBY UPON IMMERSION OF THE TRANSDUCER IN AN IONIZABLE SOLUTE AND UPON SUBJECTING SAID DISC TO EXTERNAL PRESSURE, THE DISC GENERATED AN ELECTRICAL CHARGE AND THE ENVELOPING IONIZABLE MEDIUM FUNCTIONS LIKE A SINGLE TURN
Claim 2
Dependent Claim
100 words
A PIEZOELECTRIC TRANSDUCER ADAPTED FOR USE IN SEAWATER AND LIKE IONIZABLE SOLUTES COMPRISING: A PIEZOELECTRIC DISC HAVING TWO CHARGE-COLLECTING FACES ELECTRICALLY INSULATED FROM EACH OTHER, SAID DISC BEING POSITIONED IN THE CENTER OPENING OF A FLATTENED TOROIDAL PICKOFF COIL, SAID TOROIDAL PICKOFF COIL SURROUNDING A TOROIDAL MAGNETIC CORE, SAID CORE BEING PROVIDED WITH A COATING OF INSULATING MATERIAL, AND INPUT LEADS OPERATIVELY CONNECTED TO SAID COIL WHEREBY UPON IMMERSION OF THE TRANSDUCER IN AN IONIZABLE SOLUTE AND UPON SUBJECTING SAID DISC TO EXTERNAL PRESSURE, THE DISC GENERATED AN ELECTRICAL CHARGE AND THE ENVELOPING IONIZABLE MEDIUM FUNCTIONS LIKE A SINGLE TURN
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) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |