US3072805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Autopolarization of electrostrictive transducers
Assignee: ACOUSTICA ASSOCIATES Inc
•
Filing: 1958-11-13
•
Granted: 1963-01-08
•
Expires: 1978-11-13
Abstract
No abstract record available.
Inventors
- 👤 Stanley R Rich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:38
CPC Classifications
H; H01; H01G; H01G7/00; H01G7/02; H04; H04R; H04R17/00; H10; H10N; H10N30/00; H10N30/80; H10N30/802
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
AUTOPOLARIZATION CIRCUIT FOR A PREPOLARIZED ELECTROSTRICTIVE ELECTROMECHANICAL TRANSDUCER HAVING AN INHERENT SELF-CAPACITANCE COMPRISING, SAID TRANSDUCER, A SOURCE OF ALTERNATING ELECTRIC DRIVING ENERGY COUPLED THERETO BY A CAPACITOR, AND SUBSTANTIALLY UNIDIRECTIONAL RECTIFIER MEANS CONNECTED ACROSS SAID TRANSDUCER POLED TO HAVE ITS HIGHER RESISTANCE DURING FLOW OF DRIVING ENERGY IN THE DIRECTION TENDING TO CHARGE SAID TRANSDUCER IN THE SENSE WHICH AIDS THE PREPOLARIZATION THEREOF, WHEREBY SAID CIRCUIT PASSES TO SAID TRANSDUCER SUBSTANTIALLY THE ENTIRE ALTERNATING DRIVING ENERGY AND SIMULTANEOUSLY SAID RECTIFIER MEANS CAUSES CHARGING OF SAID SELF-CAPACITANCE WITH A UNIDIRECTIONAL BIAS VOLTAGE DERIVED FROM SAID SOURCE AND PROPORTIONAL IN AMPLITUDE TO THE PEAK AMPLITUDE OF THE ALTERNATING DRIVING VOLTAGE.
Claim 2
Dependent Claim
108 words
AUTOPOLARIZATION CIRCUIT FOR A PREPOLARIZED ELECTROSTRICTIVE ELECTROMECHANICAL TRANSDUCER HAVING AN INHERENT SELF-CAPACITANCE COMPRISING, SAID TRANSDUCER, A SOURCE OF ALTERNATING ELECTRIC DRIVING ENERGY COUPLED THERETO BY A CAPACITOR, AND SUBSTANTIALLY UNIDIRECTIONAL RECTIFIER MEANS CONNECTED ACROSS SAID TRANSDUCER POLED TO HAVE ITS HIGHER RESISTANCE DURING FLOW OF DRIVING ENERGY IN THE DIRECTION TENDING TO CHARGE SAID TRANSDUCER IN THE SENSE WHICH AIDS THE PREPOLARIZATION THEREOF, WHEREBY SAID CIRCUIT PASSES TO SAID TRANSDUCER SUBSTANTIALLY THE ENTIRE ALTERNATING DRIVING ENERGY AND SIMULTANEOUSLY SAID RECTIFIER MEANS CAUSES CHARGING OF SAID SELF-CAPACITANCE WITH A UNIDIRECTIONAL BIAS VOLTAGE DERIVED FROM SAID SOURCE AND PROPORTIONAL IN AMPLITUDE TO THE PEAK AMPLITUDE OF THE ALTERNATING DRIVING VOLTAGE.
References Cited (Backward Citations)
US1928503A
Cited
US2358391A
Cited
US2592703A
Cited
US2624853A
Cited
US2659829A
Cited
US2600172A
Cited
US2540841A
Cited
US2678373A
Cited
FR1091147A
Cited
US2794921A
Cited
US2819442A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |