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US3191913A
Expired / Lapsed
US
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Ultrasonic unit
Assignee: METTLER LOVENA G TRUSTEE TRUST A METTLER FAMILY
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Filing: 1961-05-22
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Granted: 1965-06-29
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Expires: 1981-05-22
Abstract
No abstract record available.
Inventors
- 👤 Hal C Mettler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:24
CPC Classifications
B; B08; B08B; B08B3/00; B08B3/04; B08B3/10; B08B3/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
93 words
IN A MECHANICAL VIBRATORY ENERGY GENERATING APPARATUS THE COMBINATION, COMPRISING: A PIEZOELECTRIC CRYSTAL ELEMENT HAVING DIMENSIONS DETERMINATIVE OF AT LEAST TWO HARMONICALLY RELATED RESONANT MECHANICAL VIBRATORY FREQUENCIES OF THE CRYSTAL, AND MEANS FOR APPLYING AN ENERGIZING SIGNAL TO THE CRYSTAL ELEMENT HAVING AT LEAST TOW FREQUENCY COMPONENTS SUBSTANTIALLY EQUAL TO SAID TWO HARMONICALLY RELATED RESONANT VIBRATORY FREQUENCIES, SAID ENERGIZING MEANS BEING ADAPTED FOR APLYING AN ENERGIZING SIGNAL OF SUFFICIENT POWER AT BOTH OF SAID FREQUENCIES FOR CAUSING THE CRYSTAL ELEMENT TO FORM MECHANICAL VIBRATORY POWER AT BOTH SAID HARMONICALLY RELATED RESONANT VIBRATORY FREQUENCIES.
References Cited (Backward Citations)
CA561627A
Cited
US2495295A
Cited
US2639324A
Cited
US2695357A
Cited
US2891176A
Cited
US2937292A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-28 | 1968-12-28 | 1969-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-28 | 1972-12-28 | 1973-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-28 | 1976-12-28 | 1977-06-29 | $7700.00 | Window Closed / Lapsed |