US3308423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroacoustic transducer
Assignee: Dynamics Corp of America
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Filing: 1963-12-30
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Granted: 1967-03-07
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Expires: 1983-12-30
Abstract
No abstract record available.
Inventors
- 👤 Jr Frank Massa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:16
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
208 words
THE IMPROVEMENT OF AN ALTERNATING ELECTROACOUSTIC TRANSDUCER COMPRISING A SEALED HOUSING STRUCTURE, INCLUDING TWO VIBRATILE END PORTIONS SEPARATED BY A COMPLAINT MEMBER, A MASSIVE FIRST MAGNETIC MEANS ADAPTED TO BE SPACED FROM SAID FIRST END PORTION FOR TRANSLATORY VIBRATION RELATIVE THERETO, A MASSIVE SECOND MAGNETIC MEANS ADAPTED TO BE SPACED FROM SAID SECOND END PORTION FOR TRANSLATORY VIBRATION RELATIVE THERETO, A THIRD MAGNETIC MEANS RIGIDLY SECURED TO SAID FIRST END PORTION AND POSITIONED IN OPERABLE RELATION TO SAID FIRST MAGNETIC MEANS, A FOURTH MAGNETIC MEANS SECURED TO SAID SECOND END PORTION AND POSITIONED IN OPERABLE RELATION TO SAID SECOND MAGNETIC MEANS, ALTERNATING CURRENT COIL GENERATING MEANS ATTACHED TO EACH OF SAID THIRD AND SAID FOURTH MAGNETIC MEANS AND OPERATIVELY ASSOCIATED WITH EACH OF SAID MAGNETIC MEANS, TERMINAL MEANS FOR SUPPLYING ALTERNATING ELECTRICAL CURRENT TO SAID COIL MEANS, FREQUENCY DETERMINING SPRING ELEMENTS ATTACHED BETWEEN SAID FIRST AND THIRD MAGNETIC MEANS AND FREQUENCY DETERMINING SPRING ELEMENTS ATTACHED BETWEEN SAID SECOND AND SAID FOURTH MAGNETIC MEANS TO HOLD SAID ATTACHED PAIRS OF MAGNETIC MEANS IN OPERABLE RELATIONSHIP TO EACH OTHER WHEREBY TRANSLATORY VIBRATION OF SAID FIRST AND SAID SECOND END PORTION OF SAID SEALED HOUSING STRUCTURE WILL BE OF THE SAME PHASE WHENEVER ALTERNATING CURRENT IS APPLIED TO THE CURRENT COILS.
Claim 2
Dependent Claim
208 words
THE IMPROVEMENT OF AN ALTERNATING ELECTROACOUSTIC TRANSDUCER COMPRISING A SEALED HOUSING STRUCTURE, INCLUDING TWO VIBRATILE END PORTIONS SEPARATED BY A COMPLAINT MEMBER, A MASSIVE FIRST MAGNETIC MEANS ADAPTED TO BE SPACED FROM SAID FIRST END PORTION FOR TRANSLATORY VIBRATION RELATIVE THERETO, A MASSIVE SECOND MAGNETIC MEANS ADAPTED TO BE SPACED FROM SAID SECOND END PORTION FOR TRANSLATORY VIBRATION RELATIVE THERETO, A THIRD MAGNETIC MEANS RIGIDLY SECURED TO SAID FIRST END PORTION AND POSITIONED IN OPERABLE RELATION TO SAID FIRST MAGNETIC MEANS, A FOURTH MAGNETIC MEANS SECURED TO SAID SECOND END PORTION AND POSITIONED IN OPERABLE RELATION TO SAID SECOND MAGNETIC MEANS, ALTERNATING CURRENT COIL GENERATING MEANS ATTACHED TO EACH OF SAID THIRD AND SAID FOURTH MAGNETIC MEANS AND OPERATIVELY ASSOCIATED WITH EACH OF SAID MAGNETIC MEANS, TERMINAL MEANS FOR SUPPLYING ALTERNATING ELECTRICAL CURRENT TO SAID COIL MEANS, FREQUENCY DETERMINING SPRING ELEMENTS ATTACHED BETWEEN SAID FIRST AND THIRD MAGNETIC MEANS AND FREQUENCY DETERMINING SPRING ELEMENTS ATTACHED BETWEEN SAID SECOND AND SAID FOURTH MAGNETIC MEANS TO HOLD SAID ATTACHED PAIRS OF MAGNETIC MEANS IN OPERABLE RELATIONSHIP TO EACH OTHER WHEREBY TRANSLATORY VIBRATION OF SAID FIRST AND SAID SECOND END PORTION OF SAID SEALED HOUSING STRUCTURE WILL BE OF THE SAME PHASE WHENEVER ALTERNATING CURRENT IS APPLIED TO THE CURRENT COILS.
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) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |