Patent FR1373803A successfully refreshed from Google Patents.
US3257516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined instrument and transducer motor cavities for acoustic instrument
Assignee: Knowles Electronics LLC
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Filing: 1962-06-25
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Granted: 1966-06-21
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Expires: 1982-06-25
Abstract
No abstract record available.
Inventors
- 👤 Knowles Hugh Shaler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:32
CPC Classifications
H; H04; H04R; H04R25/00; H04R25/60; H04R25/604; H04R25/48; H04R2460/00; H04R2460/11; H04R25/45; H04R25/456
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
147 words
IN COMBINATION WITH A HOUSING HAVING A SUBSTANTIALLY SEALED CAVITY HAVING A SOUND PORT THROUGH THE HOUSING, AN ELECTROACOUSTIC TRANSDUCER ASSEMBLY MOVABLY DISPOSED IN SAID CAVITY SO AS TO FORM AN INTERSPACE THEREAROUND, SAID TRANSDUCER ASSEMBLY COMPRISING A DIAPHRAGM, A WALL SUBSTANTIALLY SEALED TO THE PERIPHERY OF THE DIAPHRAGM TO FORM A FRONT CAVITY ON ONE SIDE THEREOF, A MOTOR MOUNTED ON THE OTHER SIDE OF THE DIAPHRAGM AND DRIVINGLY CONNECTED THERETO, THE SPACE OCCUPIED BY THE MOTOR BEING IN COMMUNICATION WITH THE SEALED CAVITY OF THE HOUSING, A SOUND PORT INTO THE FRONT CAVITY OF THE TRANSDUCER ASSEMBLY, A DUCT CONNECTING THE SOUND PORTS OF THE HOUSING AND THE FRONT CAVITY TO EACH OTHER; AND FLEXIBLE MEANS DISPOSED IN THE INTERSPACE FOR MAINTAINING THE CAVITY OF THE HOUSING AT A SUBSTANTIALLY CONSTANT VOLUME DURING MOVEMENTS OF THE TRANSDUCER ASSEMBLY RELATIVE TO THE WALLS OF THE CAVITY.
Claim 2
Dependent Claim
147 words
IN COMBINATION WITH A HOUSING HAVING A SUBSTANTIALLY SEALED CAVITY HAVING A SOUND PORT THROUGH THE HOUSING, AN ELECTROACOUSTIC TRANSDUCER ASSEMBLY MOVABLY DISPOSED IN SAID CAVITY SO AS TO FORM AN INTERSPACE THEREAROUND, SAID TRANSDUCER ASSEMBLY COMPRISING A DIAPHRAGM, A WALL SUBSTANTIALLY SEALED TO THE PERIPHERY OF THE DIAPHRAGM TO FORM A FRONT CAVITY ON ONE SIDE THEREOF, A MOTOR MOUNTED ON THE OTHER SIDE OF THE DIAPHRAGM AND DRIVINGLY CONNECTED THERETO, THE SPACE OCCUPIED BY THE MOTOR BEING IN COMMUNICATION WITH THE SEALED CAVITY OF THE HOUSING, A SOUND PORT INTO THE FRONT CAVITY OF THE TRANSDUCER ASSEMBLY, A DUCT CONNECTING THE SOUND PORTS OF THE HOUSING AND THE FRONT CAVITY TO EACH OTHER; AND FLEXIBLE MEANS DISPOSED IN THE INTERSPACE FOR MAINTAINING THE CAVITY OF THE HOUSING AT A SUBSTANTIALLY CONSTANT VOLUME DURING MOVEMENTS OF THE TRANSDUCER ASSEMBLY RELATIVE TO THE WALLS OF THE CAVITY.
Claim 3
Dependent Claim
57 words
AN ISOLATOR COMPRISING A SLEEVE, A SHOCK MOUNT DISPOSED AROUND THE SLEEVE, AN INTERNAL DUCT EXTENDING ALONG THE INSIDE OF THE SHOCK MOUNT, AND AN OPENING INTO THE DUCT THROUGH THE WALL OF THE SLEEVE NEAR ONE END OF THE SHOCK MOUNT AND AN EXTERNAL OPENING INTO THE DUCT NEAR THE OTHER END OF THE SHOCK MOUNT.
Claim 4
Dependent Claim
57 words
AN ISOLATOR COMPRISING A SLEEVE, A SHOCK MOUNT DISPOSED AROUND THE SLEEVE, AN INTERNAL DUCT EXTENDING ALONG THE INSIDE OF THE SHOCK MOUNT, AND AN OPENING INTO THE DUCT THROUGH THE WALL OF THE SLEEVE NEAR ONE END OF THE SHOCK MOUNT AND AN EXTERNAL OPENING INTO THE DUCT NEAR THE OTHER END OF THE SHOCK MOUNT.
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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) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |