US3072750A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flux diverter
Assignee: Individual
•
Filing: 1953-05-18
•
Granted: 1963-01-08
•
Expires: 1973-05-18
Abstract
No abstract record available.
Inventors
- 👤 Leonard D Barry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:31
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/127; G11B5/187; G11B5/23; G11B5/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
IN A MAGNETIC HEAD COMPRISING A MAGNETIC CORE HAVING ADJACENT POLES AND A COIL ON SAID CORE ARRANGED TO OPPOSITELY POLARIZE SAID POLES; A SHIM PIECE SEPARATING SAID POLES AND EXTENDING BEYOND THE SIDE EDGES OF SAID POLES AND ELECTRICALLY GROUNDED BEYOND ONE SIDE EDGE OF THE POLES AND BEYOND THE OTHER SIDE EDGE CONNECTED IN SERIES TO THE COIL WINDING OF THE HEAD SAID SHIM BEING ELECTRICALLY CONDUCTIVE.
Claim 2
Dependent Claim
69 words
IN A MAGNETIC HEAD COMPRISING A MAGNETIC CORE HAVING ADJACENT POLES AND A COIL ON SAID CORE ARRANGED TO OPPOSITELY POLARIZE SAID POLES; A SHIM PIECE SEPARATING SAID POLES AND EXTENDING BEYOND THE SIDE EDGES OF SAID POLES AND ELECTRICALLY GROUNDED BEYOND ONE SIDE EDGE OF THE POLES AND BEYOND THE OTHER SIDE EDGE CONNECTED IN SERIES TO THE COIL WINDING OF THE HEAD SAID SHIM BEING ELECTRICALLY CONDUCTIVE.
References Cited (Backward Citations)
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Cited
US2418542A
Cited
US2539400A
Cited
US2538405A
Cited
US2565191A
Cited
US2615097A
Cited
US2660622A
Cited
US2628285A
Cited
US2628286A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |