US3209078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic head equipped with a hall generator
Assignee: Siemens and Halske AG
•
Filing: 1960-12-20
•
Granted: 1965-09-28
•
Expires: 1980-12-20
Abstract
No abstract record available.
Inventors
- 👤 Neumann Helmut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:40
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/127; G11B5/33; G11B5/37
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A MAGNETIC HEAD FOR COOPERATION WITH A MOVABLE MAGNETIC RECORD CARRIER, COMPRISING A HALL GENERATOR DISPOSED BETWEEN PROXIMATE SURFACES OF TWO FERRITE MEMBERS OF BLOCK FORM, A GENERALLY U-SHAPED POLE STRUCTURE MADE OF TWO IRON STRIPS OF HIGH PERMEABLITY JOINED TOGETHER AND FORMING AT THE CORRESPONDING JOINT A MAGNETIC GAP WHICH IS ENGAGED BY THE RECORD CARRIER, THE DIRECTION OF MOTION OF SAID RECORD CARRIER COINCIDING WITH THE DIRECTION OF ROLLING OF SAID STRIPS DURING THEIR FABRICATION, THE LEGS OF SAID POLE STRUCTURE OPERABLY STRADDLING THE FERRITE MEMBERS AND CONTACTING IN LOW RELUCTANCE RELATIONSHIP DISTAL SURFACE OF SAID MEMBERS REMOTE FROM SAID HALL GENERATOR.
Claim 2
Dependent Claim
104 words
A MAGNETIC HEAD FOR COOPERATION WITH A MOVABLE MAGNETIC RECORD CARRIER, COMPRISING A HALL GENERATOR DISPOSED BETWEEN PROXIMATE SURFACES OF TWO FERRITE MEMBERS OF BLOCK FORM, A GENERALLY U-SHAPED POLE STRUCTURE MADE OF TWO IRON STRIPS OF HIGH PERMEABLITY JOINED TOGETHER AND FORMING AT THE CORRESPONDING JOINT A MAGNETIC GAP WHICH IS ENGAGED BY THE RECORD CARRIER, THE DIRECTION OF MOTION OF SAID RECORD CARRIER COINCIDING WITH THE DIRECTION OF ROLLING OF SAID STRIPS DURING THEIR FABRICATION, THE LEGS OF SAID POLE STRUCTURE OPERABLY STRADDLING THE FERRITE MEMBERS AND CONTACTING IN LOW RELUCTANCE RELATIONSHIP DISTAL SURFACE OF SAID MEMBERS REMOTE FROM SAID HALL GENERATOR.
References Cited (Backward Citations)
US2683774A
Cited
US2866011A
Cited
US2907834A
Cited
US2861135A
Cited
US2978545A
Cited
GB846260A
Cited
US3041414A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |