US3331970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sonic transducer
Assignee: Honeywell Inc
•
Filing: 1964-09-29
•
Granted: 1967-07-18
•
Expires: 1984-09-29
Abstract
No abstract record available.
Inventors
- 👤 Dundon Thomas Martin
- 👤 Joseph M R Frappier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:38
CPC Classifications
H; H04; H04R; H04R17/00; G; G10; G10K; G10K9/00; G10K9/12; G10K9/122
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
IN A SONIC TRANSDUCER DEVICE THE COMBINATION COMPRISING: A PIEZOELECTRIC DISC ELEMENT HAVING A GIVEN THICKNESS AND A FIRST DIAMETER; A METALLIC DISC ELEMENT HAVING SUBSTANTIALLY THE SAME THICKNESS AS THE GIVEN THICKNESS AND A SECOND DIAMETER LARGER THAN THE FIRST DIAMETER; THE PIEZOELECTRIC DISC ELEMENT MOUNTED ON THE METALLIC DISC ELEMENT TO DEFINE A TRANSDUCER ASSEMBLY; THE TRANSDUCER ASSEMBLY CONSISTING OF A CENTRAL PORTION OF BOTH ELEMENTS AND A PERIPHERAL PORTION OF ESSENTIALLY THE METALLIC DISC ELEMENT; AND ACOUSTIC LOADING MEANS ACOUSTICALLY COUPLING THE PERIPHERAL PORTION TO THE CENTRAL PORTION TO LOWER THE ACOUSTIC IMPEDANCE OF THE TRANSDUCER ASSEMBLY.
Claim 2
Dependent Claim
100 words
IN A SONIC TRANSDUCER DEVICE THE COMBINATION COMPRISING: A PIEZOELECTRIC DISC ELEMENT HAVING A GIVEN THICKNESS AND A FIRST DIAMETER; A METALLIC DISC ELEMENT HAVING SUBSTANTIALLY THE SAME THICKNESS AS THE GIVEN THICKNESS AND A SECOND DIAMETER LARGER THAN THE FIRST DIAMETER; THE PIEZOELECTRIC DISC ELEMENT MOUNTED ON THE METALLIC DISC ELEMENT TO DEFINE A TRANSDUCER ASSEMBLY; THE TRANSDUCER ASSEMBLY CONSISTING OF A CENTRAL PORTION OF BOTH ELEMENTS AND A PERIPHERAL PORTION OF ESSENTIALLY THE METALLIC DISC ELEMENT; AND ACOUSTIC LOADING MEANS ACOUSTICALLY COUPLING THE PERIPHERAL PORTION TO THE CENTRAL PORTION TO LOWER THE ACOUSTIC IMPEDANCE OF THE TRANSDUCER ASSEMBLY.
References Cited (Backward Citations)
US2167254A
Cited
US2506608A
Cited
US2911484A
Cited
US3058539A
Cited
US3025359A
Cited
US3187300A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |