Patent US3229268A successfully refreshed from Google Patents.
US3229268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detachable electromagnetic air bearing transducer
Assignee: Unisys Corp
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Filing: 1961-04-28
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Granted: 1966-01-11
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Expires: 1981-04-28
Abstract
No abstract record available.
Inventors
- 👤 Erik R Solyst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:17
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/10; G11B5/127; G11B5/17; G11B5/48; G11B5/50; G11B5/58; G11B5/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A DEMOUNTABLE ELECTROMAGNETIC MEMORY STORAGE MODULE COMPRISING: (A) AN ELECTROMAGNETIC TRANSDUCER INCLUDING ONE OR MORE READ-WRITE HEADS, (B) MEANS FOR SUPPORTING SAID TRANSDUCER ADJACENT TO AND IN OPERATIVE RELATIONSHIP RELATIVE TO A MOVABLE RECORD MEMBER, (C) SAID TRANSDUCER SUPPORTING MEANS INCLUDING AN ELONGATED, FLEXIBLE DIELECTRIC MEMBER ATTACHED AT ITS OPPOSITE ENDS TO SAID SUPPORTING MEANS PERMITTING SAID TRANSDUCER TO UNDULATE RELATIVE TO SAID RECORD MEMBER IN A PLURALITY OF DIRECTIONS ABOUT A PAIR OF AXES SUBSTANTIALLY AT RIGHT ANGLES TO ONE ANOTHER, (D) ELECTRICAL CIRCUIT MEANS MOUNTED INTEGRALLY WITH SAID FLEXIBLE MEMBER AND OPERABLY ASSOCIATED WITH RESPECTIVE READ-WRITE HEADS, (E) BIASING MEANS FOR SAID TRANSDUCER, INCLUDING MEANS BIASING SAID TRANSDUCER TOWARD THE SURFACE OF SAID
Claim 2
Dependent Claim
115 words
A DEMOUNTABLE ELECTROMAGNETIC MEMORY STORAGE MODULE COMPRISING: (A) AN ELECTROMAGNETIC TRANSDUCER INCLUDING ONE OR MORE READ-WRITE HEADS, (B) MEANS FOR SUPPORTING SAID TRANSDUCER ADJACENT TO AND IN OPERATIVE RELATIONSHIP RELATIVE TO A MOVABLE RECORD MEMBER, (C) SAID TRANSDUCER SUPPORTING MEANS INCLUDING AN ELONGATED, FLEXIBLE DIELECTRIC MEMBER ATTACHED AT ITS OPPOSITE ENDS TO SAID SUPPORTING MEANS PERMITTING SAID TRANSDUCER TO UNDULATE RELATIVE TO SAID RECORD MEMBER IN A PLURALITY OF DIRECTIONS ABOUT A PAIR OF AXES SUBSTANTIALLY AT RIGHT ANGLES TO ONE ANOTHER, (D) ELECTRICAL CIRCUIT MEANS MOUNTED INTEGRALLY WITH SAID FLEXIBLE MEMBER AND OPERABLY ASSOCIATED WITH RESPECTIVE READ-WRITE HEADS, (E) BIASING MEANS FOR SAID TRANSDUCER, INCLUDING MEANS BIASING SAID TRANSDUCER TOWARD THE SURFACE OF SAID
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |