US3296511A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for the reproduction of ultrasonic oscillations
Assignee: US Philips Corp
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Filing: 1963-09-11
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Granted: 1967-01-03
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Expires: 1983-09-11
Abstract
No abstract record available.
Inventors
- 👤 Burgt Cornelis Martinus Va Der
- 👤 Josephus Hermanus Stephanus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:51
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/445; B; B06; B06B; B06B1/00; B06B1/02; B06B1/0207; B06B1/0223; B06B1/0238; B06B1/0246; B06B1/0253; B06B2201/00; B06B2201/50; B06B2201/55; B06B2201/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
APPARATUS FOR GENERATING ELECTRIC OSCILLATIONS OF A GIVEN FREQUENCY COMPRISING AN AMPLIFYING DEVICE HAVING INPUT AND OUTPUT MEANS, A LOAD CIRCUIT INCLUDING AN ULTRASONIC TRANSDUCER HAVING A NATURAL FREQUENCY OF VIBRATION AT SAID GIVEN FREQUENCY, SAID LOAD CIRCUIT FURTHER COMPRISING A BRIDGE CIRCUIT INTERCONNECTING SAID INPUT MEANS AND SAID OUTPUT MEANS, SAID BRIDGE CIRCUIT COMPRISING FIRST AND SECOND ARMS ONE OF WHICH INCLUDES SAID TRANSDUCER AND THE OTHER OF WHICH INCLUDES IMPEDANCE MEANS HAVING A REACTANCE COMPONENT, SAID BRIDGE CIRCUIT BEING ARRANGED SO THAT AT SAID GIVEN FREQUENCY THE BRIDGE CIRCUIT IS BALANCED BY THE CLAMPED IMPEDANCE OF SAID TRANSDUCER, AND REACTANCE MEANS IN SAID LOAD CIRCUIT FOR TUNING THE LOAD CIRCUIT TO THE NATURAL FREQUENCY OF SAID TRANSDUCER, WHEREBY OSCILLATIONS ARE SUSTAINED IN SAID APPARATUS SUBSTANTIALLY AT SAID GIVEN FREQUENCY DESPITE SUBSTANTIAL VARIATIONS IN THE LOAD CONDITIONS OF THE TRANSDUCER.
Claim 2
Dependent Claim
141 words
APPARATUS FOR GENERATING ELECTRIC OSCILLATIONS OF A GIVEN FREQUENCY COMPRISING AN AMPLIFYING DEVICE HAVING INPUT AND OUTPUT MEANS, A LOAD CIRCUIT INCLUDING AN ULTRASONIC TRANSDUCER HAVING A NATURAL FREQUENCY OF VIBRATION AT SAID GIVEN FREQUENCY, SAID LOAD CIRCUIT FURTHER COMPRISING A BRIDGE CIRCUIT INTERCONNECTING SAID INPUT MEANS AND SAID OUTPUT MEANS, SAID BRIDGE CIRCUIT COMPRISING FIRST AND SECOND ARMS ONE OF WHICH INCLUDES SAID TRANSDUCER AND THE OTHER OF WHICH INCLUDES IMPEDANCE MEANS HAVING A REACTANCE COMPONENT, SAID BRIDGE CIRCUIT BEING ARRANGED SO THAT AT SAID GIVEN FREQUENCY THE BRIDGE CIRCUIT IS BALANCED BY THE CLAMPED IMPEDANCE OF SAID TRANSDUCER, AND REACTANCE MEANS IN SAID LOAD CIRCUIT FOR TUNING THE LOAD CIRCUIT TO THE NATURAL FREQUENCY OF SAID TRANSDUCER, WHEREBY OSCILLATIONS ARE SUSTAINED IN SAID APPARATUS SUBSTANTIALLY AT SAID GIVEN FREQUENCY DESPITE SUBSTANTIAL VARIATIONS IN THE LOAD CONDITIONS OF THE TRANSDUCER.
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) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |