US3328752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extended frequency range pressure balanced hydrophone
Assignee: Individual
•
Filing: 1965-12-20
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Granted: 1967-06-27
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Expires: 1985-12-20
Abstract
No abstract record available.
Inventors
- 👤 Claude C Sims
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:47
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/02; B06B1/06; B06B1/0644; B06B1/0655; G; G01; G01S; G01S1/00; G01S1/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
AN ELECTROACOUSTIC TRANSDUCER WHICH COMPRISES: AN ELONGATED CYLINDRICAL TRANSDUCER ELEMENT ELECTRICALLY RESPONSIVE TO INCIDENT PRESSURE, AN ELONGATED CYLINDRICAL MEMBER FORMING A CHAMBER ABOUT SAID ELECTRICALLY RESPONSIVE ELEMENT COAXIAL THEREWITH, A COMPRESSIBLE FLUID FILLING WITHIN SAID CHAMBER, SURROUNDING SAID ELECTRICALLY RESPONSIVE ELEMENT AND WITHIN SAID ELECTRICALLY RESPONSIVE ELEMENT, AN END CAP ON EACH OF SAID ELECTRICALLY RESPONSIVE ELEMENT, AN APERTURE IN ONE OF SAID END CAPS COAXIAL WITH SAID ELECTRICALLY RESPONSIVE ELEMENTS, A SOLID ELONGATED PLUNGER POSITIONED RELATIVE TO SAID ELECTRICALLY RESPONSIVE ELEMENT COAXIAL THEREWITH, SAID PLUNGER EXTENDING THROUGH SAID APERTURE IN SAID END CAP IN SAID ELECTRICALLY RESPONSIVE ELEMENT INTO THE AREA CONFINED BY SAID ELECTRICALLY RESPONSIVE ELEMENT, AND AN EXTENSIBLE SUPPORT, SUPPORTING SAID PLUNGER FOR AXIAL MOVEMENT WITHIN SAID APERTURE RELATIVE TO SAID TRANSDUCER ELEMENT.
Claim 2
Dependent Claim
126 words
AN ELECTROACOUSTIC TRANSDUCER WHICH COMPRISES: AN ELONGATED CYLINDRICAL TRANSDUCER ELEMENT ELECTRICALLY RESPONSIVE TO INCIDENT PRESSURE, AN ELONGATED CYLINDRICAL MEMBER FORMING A CHAMBER ABOUT SAID ELECTRICALLY RESPONSIVE ELEMENT COAXIAL THEREWITH, A COMPRESSIBLE FLUID FILLING WITHIN SAID CHAMBER, SURROUNDING SAID ELECTRICALLY RESPONSIVE ELEMENT AND WITHIN SAID ELECTRICALLY RESPONSIVE ELEMENT, AN END CAP ON EACH OF SAID ELECTRICALLY RESPONSIVE ELEMENT, AN APERTURE IN ONE OF SAID END CAPS COAXIAL WITH SAID ELECTRICALLY RESPONSIVE ELEMENTS, A SOLID ELONGATED PLUNGER POSITIONED RELATIVE TO SAID ELECTRICALLY RESPONSIVE ELEMENT COAXIAL THEREWITH, SAID PLUNGER EXTENDING THROUGH SAID APERTURE IN SAID END CAP IN SAID ELECTRICALLY RESPONSIVE ELEMENT INTO THE AREA CONFINED BY SAID ELECTRICALLY RESPONSIVE ELEMENT, AND AN EXTENSIBLE SUPPORT, SUPPORTING SAID PLUNGER FOR AXIAL MOVEMENT WITHIN SAID APERTURE RELATIVE TO SAID TRANSDUCER ELEMENT.
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) | 1970-06-26 | 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 |