Patent US1965273A successfully refreshed from Google Patents.
US3277435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deck velocity ultrasonic hydrophones
Assignee: Individual
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Filing: 1963-02-18
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Granted: 1966-10-04
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Expires: 1983-02-18
Abstract
No abstract record available.
Inventors
- 👤 John H Thompson
- 👤 Robert H Whittaker
- 👤 Robert A Lester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:58
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/02; B06B1/06; B06B1/0644; B06B1/0662; B06B1/0681; B06B1/0685
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
AN UNDERWATER TRANSDUCER CHARACTERIZED BY HIGH SENSITIVITY COMPRISING CRYSTAL SUPPORTING MEANS COMPOSED OF PLIABLE MATERIAL AND HAVING A CENTRALLY DISPOSED FILLED WITH A VISCOUS FLUID, PRESSURE RESPONSIVE MEANS FORMED WITH AND DISPOSED ON ONE END OF SAID SUPPORTING MEANS A CERAMIC CRYSTAL ELEMENT DISPOSED IN SAID PRESSURE INTIMATE SPACED RELATION WITH RESPECT TO SAID PRESSURE RESPONSIVE MEANS, MEANS COMPOSED OF SOUND ABSORBING MATERIAL DISPOSED WITHIN SAID RECESS FOR COVERING ONE SURFACE OF THE CRYSTAL ELEMENT, MEANS COMPOSED OF PLASTIC MATERIAL DISPOSED IN THE RECESS IN ENGAGEMENT WITH SAID COVERING MEANS, BASE MEANS SUPPORTED ON THE SUPPORTING MEANS, TUBULAR MEANS ENCLOSING THE SUPPORTING MEANS AND FITTED ONTO SAID BASE FOR COMPRESSING THE SUPPORTING MEANS AN AMOUNT SUFFICIENT TO SEAL THE TRANSDUCER ASSEMBLY, AND A PAIR OF ELECTRICAL LEADS CONNECTED TO THE CRYSTAL ELEMENT FOR ESTABLISHING AN ELECTRICAL CONNECTION BETWEEN THE CRYSTAL ELEMENT AND THE EXTERIOR OF THE BASE MEANS.
Claim 2
Dependent Claim
148 words
AN UNDERWATER TRANSDUCER CHARACTERIZED BY HIGH SENSITIVITY COMPRISING CRYSTAL SUPPORTING MEANS COMPOSED OF PLIABLE MATERIAL AND HAVING A CENTRALLY DISPOSED FILLED WITH A VISCOUS FLUID, PRESSURE RESPONSIVE MEANS FORMED WITH AND DISPOSED ON ONE END OF SAID SUPPORTING MEANS A CERAMIC CRYSTAL ELEMENT DISPOSED IN SAID PRESSURE INTIMATE SPACED RELATION WITH RESPECT TO SAID PRESSURE RESPONSIVE MEANS, MEANS COMPOSED OF SOUND ABSORBING MATERIAL DISPOSED WITHIN SAID RECESS FOR COVERING ONE SURFACE OF THE CRYSTAL ELEMENT, MEANS COMPOSED OF PLASTIC MATERIAL DISPOSED IN THE RECESS IN ENGAGEMENT WITH SAID COVERING MEANS, BASE MEANS SUPPORTED ON THE SUPPORTING MEANS, TUBULAR MEANS ENCLOSING THE SUPPORTING MEANS AND FITTED ONTO SAID BASE FOR COMPRESSING THE SUPPORTING MEANS AN AMOUNT SUFFICIENT TO SEAL THE TRANSDUCER ASSEMBLY, AND A PAIR OF ELECTRICAL LEADS CONNECTED TO THE CRYSTAL ELEMENT FOR ESTABLISHING AN ELECTRICAL CONNECTION BETWEEN THE CRYSTAL ELEMENT AND THE EXTERIOR OF THE BASE MEANS.
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) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |