Patent US3560895A successfully refreshed from Google Patents.
US3560895A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tuned transformer without tuning capacitor
Assignee: Toko Inc
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Filing: 1967-07-10
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Granted: 1971-02-02
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Expires: 1987-07-10
Abstract
Abstract A WINDING FOR CREATING CAPACITANCE IS WOUND PARALLELLY TOGETHER WITH A PART OF A TUNING COIL OF A TUNED TRANSFORMER TO PRODUCE A DISTRIBUTED CAPACITANCE BETWEEN THE TERMINALS OF THE TUNNG COIL, AND POINTS IN THE WINDING AND COIL OF RESPECTIVELY DIFFERENT POTENTIAL ARE CONNECTED TO INCREASE THE DISTRIBUTED CAPACITANCE, WHICH IS SUITABLE COM- BINATION WITH THE INDUCTANCE OF THE TUNING COIL PRODUCES A DESIRED RESONANCE FREQUENCY WITHOUT THE USE OF AN EXTERNAL TUNING CAPACITOR. CONSISTENTLY CONSTANT DISTRIBUTED CAPACITANCE IS OBTAINED IN PRODUCTION.
Inventors
- 👤 Hiromi Matsumoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:09
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/28; H01F27/2823; H01F19/00; H01F19/04; H01F41/00; H01F41/02; H01F41/04; H01F41/06; H01F41/064; H01F41/069; H03; H03H; H03H7/00; H03H7/01; H03H7/0153; H03H7/0161; H03H7/0169; H03H7/0184; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49071
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |