Patent US3271644A successfully refreshed from Google Patents.
US3271644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power oscillator for an electromechanical vibrating transducer
Assignee: Westinghouse Electric Corp
•
Filing: 1963-10-23
•
Granted: 1966-09-06
•
Expires: 1983-10-23
Abstract
No abstract record available.
Inventors
- 👤 James L Mcshane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:21
CPC Classifications
H; H03; H03B; H03B5/00; H03B5/30; B; B06; B06B; B06B1/00; B06B1/02; B06B1/0207; B06B1/0223; B06B1/0238
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
101 words
IN COMBINATION, A TRANSDUCER HAVING D.C. WINDINGS AND A.C. WINDINGS AND HAVING ELECTRICAL CHARACTERISTICS FUNCTIONALLY RELATED TO THE LOAD TO BE DRIVEN THEREBY; AN LC CIRCUIT INCLUDING A CAPACITOR MEMBER AND AN INDUCTOR MEMBER; A CONSTANT CURRENT SOURCE OPERABLY CONNECTED ACROSS SAID LC CIRCUIT; MEANS RESPONSIVE TO THE ELECTRICAL CHARACTERISTICS OF SAID TRANSDUCER FOR CONTROLLING THE FREQUENCY AT WHICH ENERGY IS INTERCHANGED IN SAID LC CIRCUIT; AN EFFECTIVE A.C. LOAD IMPEDANCE BRANCH INCLUDING A FIRST CAPACITOR AND A SECOND CAPACITOR CONNECTED IN CIRCUIT RELATION WITH THE A.C. TURNS OF SAID TRANSDUCER ACROSS SAID LC CIRCUIT; SAID FIRST CAPACITOR CONNECTED IN SERIES
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) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |