Patent US3284727A successfully refreshed from Google Patents.
US3284727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circular poled transducer
Assignee: International Business Machines Corp
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Filing: 1963-06-21
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Granted: 1966-11-08
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Expires: 1983-06-21
Abstract
No abstract record available.
Inventors
- 👤 Kenneth A Carlson
- 👤 Donald R Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:01
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/30; H03H9/36; B; B06; B06B; B06B1/00; B06B1/02; B06B1/06; B06B1/0644; B06B1/0655; G; G10; G10K; G10K11/00; G10K11/18; G10K11/24; H03H9/02; H03H9/125; H03H9/13; H03H9/133; Y; Y10; Y10T; Y10T29/00; Y10T29/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A SIGNAL DELAY APPARATUS COMPRISING, AN ELONGATED SOLID TRANSMITTING FIBER, A TOROID OF FERROELECTRIC CERAMIC MATERIAL HAVING A RADIAL SLOT THEREIN, SAID TOROID CONNECTED TO ONE END OF SAID FIBER IN SURROUNDING RELATION, A FIRST ELECTRODE CONNECTED TO THE INNER SURFACE OF SAID TOROID AND SAID FIBER, A SECOND ELECTRODE CONNECTED TO THE OUTER SURFACE OF SAID TOROID, MEANS FOR PASSING AN ELECTRICAL SIGNAL BETWEEN SAID ELECTRODES TO ESTABLISH TORSIONAL WAVES IN SAID FIBER, AND ANOTHER TOROID OF FERROELECTRIC CERAMIC MATERIAL HAVING A RADIAL SLOT AND ELECTRODES CONNECTED ABOUT THE INNER AND OUTER SURFACES THEREOF ENGAGING THE OPPOSITE END OF SAID FIBER IN SURROUNDING RELATION FOR RECEIVING SAID TORSIONAL WAVES AND RECONVERTING THEM TO DELAYED ELECTRICAL SIGNALS.
Claim 2
Dependent Claim
117 words
A SIGNAL DELAY APPARATUS COMPRISING, AN ELONGATED SOLID TRANSMITTING FIBER, A TOROID OF FERROELECTRIC CERAMIC MATERIAL HAVING A RADIAL SLOT THEREIN, SAID TOROID CONNECTED TO ONE END OF SAID FIBER IN SURROUNDING RELATION, A FIRST ELECTRODE CONNECTED TO THE INNER SURFACE OF SAID TOROID AND SAID FIBER, A SECOND ELECTRODE CONNECTED TO THE OUTER SURFACE OF SAID TOROID, MEANS FOR PASSING AN ELECTRICAL SIGNAL BETWEEN SAID ELECTRODES TO ESTABLISH TORSIONAL WAVES IN SAID FIBER, AND ANOTHER TOROID OF FERROELECTRIC CERAMIC MATERIAL HAVING A RADIAL SLOT AND ELECTRODES CONNECTED ABOUT THE INNER AND OUTER SURFACES THEREOF ENGAGING THE OPPOSITE END OF SAID FIBER IN SURROUNDING RELATION FOR RECEIVING SAID TORSIONAL WAVES AND RECONVERTING THEM TO DELAYED ELECTRICAL SIGNALS.
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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) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |