US3140462A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transducer
Assignee: Individual
•
Filing: 1961-06-28
•
Granted: 1964-07-07
•
Expires: 1981-06-28
Abstract
No abstract record available.
Inventors
- 👤 Gordon B Hayes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:35
CPC Classifications
H; H03; H03D; H03D11/00; H03D11/02; G; G01; G01H; G01H11/00; G01H11/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
63 words
A LOW FREQUENCY HYDROPHONE COMPRISING A CAVITY RESONATOR WHEREIN A PORTION OF THE CAVITY ENVELOPE IS VIBRATILE AND RESONANT AT A FREQUENCY BELOW 500 CYCLES PER SECOND AND ACTUATABLE BY WATER-BORNE SOUND PRESSURE, AND MEANS FOR SUPPLING ELECTROMAGNETIC ENERGY TO SAID RESONATOR AND FOR DETECTING THE MODULATION OF THAT ENERGY BY SOUND PRESSURE BELOW 500 CYCLES PER SECOND IMPINGING ON SAID VIBRATILE 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) | 1967-07-07 | 1968-01-06 | 1968-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-07 | 1972-01-06 | 1972-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-07 | 1976-01-06 | 1976-07-07 | $7700.00 | Window Closed / Lapsed |