Patent US4025734A successfully refreshed from Google Patents.
Patent US3327313A successfully refreshed from Google Patents.
US3327313A
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US
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Multiple head unit
Assignee: NCR Voyix Corp
•
Filing: 1955-08-23
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Granted: 1967-06-20
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Expires: 1975-08-23
Abstract
No abstract record available.
Inventors
- 👤 Francis A Oliver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:06
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/127; G11B5/29; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49021; Y10T29/49032; Y10T29/49055
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A MAGNETIC TRANSDUCER HEAD UNIT COMPRISING A PLURALITY OF MAGNETIC HEADS EACH MADE UP OF TWO GENERALLY C-SHAPED POLE PIECES POSITIONED IN OPPOSED CONFRONTING RELATIONSHIP AND PRESENTING CONFRONTING LAPPED POLE TIPS ON OPPOSITE SIDES OF A NARROW TRANSDUCING GAP, AND A TWOPIECE BRACKET COMPRISING A FIRST HOUSING MEMBER RECEIVING POLE PIECES ON ONE SIDE OF SAID GAP AND A SECOND HOUSING MEMBER RECEIVING POLE PIECES ON THE OTHER SIDE OF SAID GAP, EACH OF SAID HOUSING MEMBERS PROVIDING, AT EITHER END OF THE HEAD, FACES LAPPED COPLANAR WITH THE POLE TIPS OF THE RESPECTIVE POLE PIECES, THE LAPPED FACE ON AT LEAST ONE OF SAID HOUSING MEMBERS PROJECTING BEYOND THE END OF THE OTHER HOUSING MEMBER.
Claim 2
Dependent Claim
116 words
A MAGNETIC TRANSDUCER HEAD UNIT COMPRISING A PLURALITY OF MAGNETIC HEADS EACH MADE UP OF TWO GENERALLY C-SHAPED POLE PIECES POSITIONED IN OPPOSED CONFRONTING RELATIONSHIP AND PRESENTING CONFRONTING LAPPED POLE TIPS ON OPPOSITE SIDES OF A NARROW TRANSDUCING GAP, AND A TWOPIECE BRACKET COMPRISING A FIRST HOUSING MEMBER RECEIVING POLE PIECES ON ONE SIDE OF SAID GAP AND A SECOND HOUSING MEMBER RECEIVING POLE PIECES ON THE OTHER SIDE OF SAID GAP, EACH OF SAID HOUSING MEMBERS PROVIDING, AT EITHER END OF THE HEAD, FACES LAPPED COPLANAR WITH THE POLE TIPS OF THE RESPECTIVE POLE PIECES, THE LAPPED FACE ON AT LEAST ONE OF SAID HOUSING MEMBERS PROJECTING BEYOND THE END OF THE OTHER HOUSING MEMBER.
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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) | 1970-06-19 | 1970-12-19 | 1971-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-19 | 1974-12-19 | 1975-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-19 | 1978-12-19 | 1979-06-20 | $7700.00 | Window Closed / Lapsed |