US3328751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroacoustic transducer
Assignee: Dynamics Corp of America
•
Filing: 1966-03-28
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Granted: 1967-06-27
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Expires: 1986-03-28
Abstract
No abstract record available.
Inventors
- 👤 Massa Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:38
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/02; B06B1/06; B06B1/0607; B06B1/0611; B06B1/0618
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
IN AN ELECTROACOUSTIC TRANSDUCER ASSEMBLY, TRANSDUCER MEANS HAVING OPPOSITE END SURFACES, A WEIGHT MEMBER SECURED AGAINST ONE OF SAID END SURFACES OF SAID TRANSDUCER MEANS, A VIBRATILE PLATE HAVING A RADIATING FACE ON ONE SIDE THEREOF AND HAVING A CENTRAL PORTION ON THE OPPOSITE SIDE THEREOF SECURED GAINST THE OTHER OF SAID END SURFACES OF SAID TRANSDUCER MEANS, A HOLLOW RIGID HOUSING STRUCTURE SURROUNDING SAID TRANSDUCER MEANS AND SAID WEIGHT MEMBER AND HAVING AN OPEN END ADJACENT A PERIPHERAL PORTION OF SAID VIBRATILE PLATE, AND RESILIENT MEANS INTERPOSED BETWEEN SAID OPEN END OF SAID HOUSING STRUCTURE AND SAID PERIPHERAL PORTION OF SAID VIBRATILE PLATE ARRANGED TO FLEXIBLY SEAL SAID HOUSING STRUCTURE TO SAID VIBRATILE PLATE.
Claim 2
Dependent Claim
115 words
IN AN ELECTROACOUSTIC TRANSDUCER ASSEMBLY, TRANSDUCER MEANS HAVING OPPOSITE END SURFACES, A WEIGHT MEMBER SECURED AGAINST ONE OF SAID END SURFACES OF SAID TRANSDUCER MEANS, A VIBRATILE PLATE HAVING A RADIATING FACE ON ONE SIDE THEREOF AND HAVING A CENTRAL PORTION ON THE OPPOSITE SIDE THEREOF SECURED GAINST THE OTHER OF SAID END SURFACES OF SAID TRANSDUCER MEANS, A HOLLOW RIGID HOUSING STRUCTURE SURROUNDING SAID TRANSDUCER MEANS AND SAID WEIGHT MEMBER AND HAVING AN OPEN END ADJACENT A PERIPHERAL PORTION OF SAID VIBRATILE PLATE, AND RESILIENT MEANS INTERPOSED BETWEEN SAID OPEN END OF SAID HOUSING STRUCTURE AND SAID PERIPHERAL PORTION OF SAID VIBRATILE PLATE ARRANGED TO FLEXIBLY SEAL SAID HOUSING STRUCTURE TO SAID VIBRATILE PLATE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-26 | 1970-12-26 | 1971-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-26 | 1974-12-26 | 1975-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-26 | 1978-12-26 | 1979-06-27 | $7700.00 | Window Closed / Lapsed |