US3231853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Subaqueous audio-sound transmitter
Assignee: Individual
•
Filing: 1963-12-04
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Granted: 1966-01-25
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Expires: 1983-12-04
Abstract
No abstract record available.
Inventors
- 👤 Frederick M Freis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:07
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
SUBAQUEOUS AUDIO-SOUND TRANSMITTER COMPRISING, A PAIR OF RECESSED HOUSING ELEMENTS SECURED IN AXIALLYOPPOSED RELATIONSHIP, A DIAPHRAGM INTERPOSED BETWEEN THE HOUSING ELEMENTS AND FORMING CHAMBERS BETWEEN THE DIAPHRAGM AND THE INNER RECESSED FACES OF THE RESPECTIVE HOUSING ELEMENTS, ONE OF WHICH CHAMBERS IS FLUID-SEALED A PAIR OF STUD SHAFTS FIXED ON THE RESPECTIVE HOUSING ELEMENTS WITH THE INNER ENDS OF THE SHAFTS CONCENTRICALLY JUXTAPOSED ON OPPOSITE SIDES OF THE DIAPHRAGM, A PAIR OF PERMANENT AXIALLY-MAGNETIZED ANNULI BONDED TO A RESPECTIVE PAIR OF DISKS AND ANCHORED AGAINST THE INNER RECESSED FACES OF THE RESPECTIVE HOUSING ELEMENTS, A PAIR OF VOICE COILS EMBRACING THE INNER ENDS OF THE RESPECTIVE STUDSHAFTS WITHIN THE RESPECTIVE ANNULI AND CABLES EXTENDING OUTWARDLY OF THE RESPECTIVE HOUSING ELEMENTS FOR CONNECTION OF THE VOICE COILS TO A POWER PACK.
Claim 2
Dependent Claim
130 words
SUBAQUEOUS AUDIO-SOUND TRANSMITTER COMPRISING, A PAIR OF RECESSED HOUSING ELEMENTS SECURED IN AXIALLYOPPOSED RELATIONSHIP, A DIAPHRAGM INTERPOSED BETWEEN THE HOUSING ELEMENTS AND FORMING CHAMBERS BETWEEN THE DIAPHRAGM AND THE INNER RECESSED FACES OF THE RESPECTIVE HOUSING ELEMENTS, ONE OF WHICH CHAMBERS IS FLUID-SEALED A PAIR OF STUD SHAFTS FIXED ON THE RESPECTIVE HOUSING ELEMENTS WITH THE INNER ENDS OF THE SHAFTS CONCENTRICALLY JUXTAPOSED ON OPPOSITE SIDES OF THE DIAPHRAGM, A PAIR OF PERMANENT AXIALLY-MAGNETIZED ANNULI BONDED TO A RESPECTIVE PAIR OF DISKS AND ANCHORED AGAINST THE INNER RECESSED FACES OF THE RESPECTIVE HOUSING ELEMENTS, A PAIR OF VOICE COILS EMBRACING THE INNER ENDS OF THE RESPECTIVE STUDSHAFTS WITHIN THE RESPECTIVE ANNULI AND CABLES EXTENDING OUTWARDLY OF THE RESPECTIVE HOUSING ELEMENTS FOR CONNECTION OF THE VOICE COILS TO A POWER PACK.
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) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |