Patent US3198489A successfully refreshed from Google Patents.
US3198489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compound ultrasonic transducer and mounting means therefor
Assignee: Birtcher Corp
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Filing: 1962-02-16
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Granted: 1965-08-03
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Expires: 1982-02-16
Abstract
No abstract record available.
Inventors
- 👤 Horace T Finch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:42
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/02; B06B1/06; B06B1/0607; B06B1/0611; B06B1/0618
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
AN ULTRASONIC CLEANING APPARATUS INCLUDING A TRANSDUCER COMPRISING: A RELATIVELY THIN FLAT PLATE OF POLARIZABLE FERROELECTRIC CERAMIC MATERIAL AND A METAL RESONATOR HAVING SUBSTANTIALLY IDENTICAL AND PARALLEL MAJOR PLANAR SURFACES, THE AREAS OF WHICH ARE COEXTENSIVE WITH THE AREAS OF THE PLANAR SURFACES OF SAID PLATE, ONE OF SAID PLANAR SURFACES OF SAID PLATE BEING ADHESIVELY BONDED TO ONE OF SAID PLANAR SURFACES OF SAID RESONATOR, A CONTAINER HAVING A RECEIVING APERTURE FOR ONE END OF SAID RESONATOR, AND MEANS EFFECTING A RESILIENT SEALED SUPPORTING CONNECTION BETWEEN SAID RESONATOR AND THE PERIPHERY OF SAID APERTURE.
Claim 2
Dependent Claim
95 words
AN ULTRASONIC CLEANING APPARATUS INCLUDING A TRANSDUCER COMPRISING: A RELATIVELY THIN FLAT PLATE OF POLARIZABLE FERROELECTRIC CERAMIC MATERIAL AND A METAL RESONATOR HAVING SUBSTANTIALLY IDENTICAL AND PARALLEL MAJOR PLANAR SURFACES, THE AREAS OF WHICH ARE COEXTENSIVE WITH THE AREAS OF THE PLANAR SURFACES OF SAID PLATE, ONE OF SAID PLANAR SURFACES OF SAID PLATE BEING ADHESIVELY BONDED TO ONE OF SAID PLANAR SURFACES OF SAID RESONATOR, A CONTAINER HAVING A RECEIVING APERTURE FOR ONE END OF SAID RESONATOR, AND MEANS EFFECTING A RESILIENT SEALED SUPPORTING CONNECTION BETWEEN SAID RESONATOR AND THE PERIPHERY OF SAID APERTURE.
References Cited (Backward Citations)
US2514080A
Cited
US2498737A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |