US3327313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple head unit
Assignee: NCR Voyix Corp
•
Filing: 1955-08-23
•
Granted: 1967-06-20
•
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 09:58
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.
References Cited (Backward Citations)
US2618709A
Cited
US2751440A
Cited
US2769036A
Cited
US2769866A
Cited
US2785232A
Cited
US2756280A
Cited
US2835742A
Cited
US2732275A
Cited
US2928907A
Cited
US2921143A
Cited
US2888522A
Cited
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 |