US3238484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
D-cores with associated windings for producing high q
Assignee: Cambridge Thermionic Corp
•
Filing: 1963-05-16
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Granted: 1966-03-01
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Expires: 1983-05-16
Abstract
No abstract record available.
Inventors
- 👤 Robert E Dacey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:16
CPC Classifications
H; H01; H01F; H01F17/00; H01F17/04; H01F17/06; H01F17/062; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49071
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
80 words
AN INDUCTIVE DEVICE COMPRISING: ONLY ONE SEMITOROIDAL MAGNETIC CORE MEMBER HAVING DIAMETRICALLY OPPOSITE ENDS; WINDING MEANS ON SAID CORE MEMBER; A SEPARATE RECTANGULARLY PARALLELEPIPEDAL STRAIGHT MAGNETIC BAR MEMBER FOR BRIDGING SAID ENDS OF THE CORE MEMBER AND HAVING FACES FITTING SAID ENDS OF THE CORE MEMBER; AND SAID OPPOSITE ENDS OF SAID CORE MEMBER AND SAID FACES OF THE BAR MEMBER EACH BEING SEPARATED BY A MINIMAL GAP OF UNIFORM THICKNESS SET FOR AN INDUCTANCE VALUE PROVIDING MINIMAL STRAY FLUX.
References Cited (Backward Citations)
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Cited
US1992822A
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US2055175A
Cited
US2195192A
Cited
US2916714A
Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |