Patent US4940064A successfully refreshed from Google Patents.
US3226701A
Expired / Lapsed
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Rotating flexible magnetic disc assembly
Assignee: D'ELECTRONIQUE ET D'AUTOMAT ISME Ste
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Filing: 1962-08-22
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Granted: 1965-12-28
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Expires: 1982-08-22
Abstract
No abstract record available.
Inventors
- 👤 Masson Claude Marie Edmond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:08
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/58; G11B5/60; G11B5/6005; G11B17/00; G11B17/02; G11B17/021
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A BINARY CODED INFORMATION STORE COMPRISING IN COMBINATION: (1) A FLEXIBLE MAGNETIC DISC FOR THE STORAGE OF INFORMATION THEREON; (2) AN ANNULAR MAGNETIC READ-OUT, READ-IN HEAD CARRIER; (3) MEANS MOUNTING SAID DISC FOR ROTATION ABOUT ITS CENTER ON THE AXIS OF SAID HEAD CARRIER AND IN CLOSE PROXIMITY THERETO, SAID MEANS FURTHER PERMITTING AXIAL MOVEMENT OF THE ENTIRETY OF SAID DISC SIMULTANEOUSLY WITH ITS ROTATION; (4) AND MEANS OPERATIVE DURING ROTATION OF SAID DISC FOR ESTABLISHING A DYNAMIC FLUID PRESSURE URGING SAID DISC TOWARD SAID HEAD CARRIER AND ALSO AN AIR BEARING BETWEEN SAID DISC AND SAID HEAD CARRIER TO PREVENT CONTACT THEREBETWEEN.
Claim 2
Dependent Claim
103 words
A BINARY CODED INFORMATION STORE COMPRISING IN COMBINATION: (1) A FLEXIBLE MAGNETIC DISC FOR THE STORAGE OF INFORMATION THEREON; (2) AN ANNULAR MAGNETIC READ-OUT, READ-IN HEAD CARRIER; (3) MEANS MOUNTING SAID DISC FOR ROTATION ABOUT ITS CENTER ON THE AXIS OF SAID HEAD CARRIER AND IN CLOSE PROXIMITY THERETO, SAID MEANS FURTHER PERMITTING AXIAL MOVEMENT OF THE ENTIRETY OF SAID DISC SIMULTANEOUSLY WITH ITS ROTATION; (4) AND MEANS OPERATIVE DURING ROTATION OF SAID DISC FOR ESTABLISHING A DYNAMIC FLUID PRESSURE URGING SAID DISC TOWARD SAID HEAD CARRIER AND ALSO AN AIR BEARING BETWEEN SAID DISC AND SAID HEAD CARRIER TO PREVENT CONTACT THEREBETWEEN.
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) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |