US3155977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resilient recording disk
Assignee: International Business Machines Corp
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Filing: 1959-08-31
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Granted: 1964-11-03
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Expires: 1979-08-31
Abstract
No abstract record available.
Inventors
- 👤 Ralph E Marrs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:39
CPC Classifications
G; G11; G11B; G11B17/00; G11B17/32; G11B5/00; G11B5/48; G11B5/488; G11B5/4886; G11B5/58; G11B5/60; G11B5/6005; G11B5/74; G11B5/82
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
RECORDING APPARATUS COMPRISING A COMPLIABLE ROTATING DISK HAVING A RECORDING MEDIUM ON AT LEAST ONE SURFACE THEREOF, A RIGID GUIDE DISK MEMBER DISPOSED CLOSELY ADJACENT SAID COMPLIABLE DISK TO LIMIT THETRANSVERSE MOVEMENT OF SAID COMPLIABLE DISK, SAID GUIDE DISK MEMBER HAVING AN OPENING THEREIN, A PAIR OF LOADING MEMBERS EXTENDING INTO SAID OPENING AND DISPOSED ADJACENT OPPOSITE SURFACES OF SAID ROTATING DISK FOR PRODUCING A WEDGE OF AIR BETWEEN SAID DISK SURFACE AND EACH OF SAID LOADING MEMBERS TO CONTROL THE POSITION OF SAID DISK RELATIVE TO SAID LOADING MEMBERS, THE SPACING BETWEEN SAID LOADING MEMBERS AND SAID ROTATING DISK DECREASING IN THE DIRECTION OF ROTATION OF SAID ROTATING DISK, AND TRANSDUCER MEANS IN AT LEAST ONE OF SAID LOADING MEMBERS FOR COOPERATING WITH SAID ROTATING DISK.
Claim 2
Dependent Claim
127 words
RECORDING APPARATUS COMPRISING A COMPLIABLE ROTATING DISK HAVING A RECORDING MEDIUM ON AT LEAST ONE SURFACE THEREOF, A RIGID GUIDE DISK MEMBER DISPOSED CLOSELY ADJACENT SAID COMPLIABLE DISK TO LIMIT THETRANSVERSE MOVEMENT OF SAID COMPLIABLE DISK, SAID GUIDE DISK MEMBER HAVING AN OPENING THEREIN, A PAIR OF LOADING MEMBERS EXTENDING INTO SAID OPENING AND DISPOSED ADJACENT OPPOSITE SURFACES OF SAID ROTATING DISK FOR PRODUCING A WEDGE OF AIR BETWEEN SAID DISK SURFACE AND EACH OF SAID LOADING MEMBERS TO CONTROL THE POSITION OF SAID DISK RELATIVE TO SAID LOADING MEMBERS, THE SPACING BETWEEN SAID LOADING MEMBERS AND SAID ROTATING DISK DECREASING IN THE DIRECTION OF ROTATION OF SAID ROTATING DISK, AND TRANSDUCER MEANS IN AT LEAST ONE OF SAID LOADING MEMBERS FOR COOPERATING WITH SAID ROTATING DISK.
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) | 1967-11-03 | 1968-05-04 | 1968-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-03 | 1972-05-04 | 1972-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-03 | 1976-05-04 | 1976-11-03 | $7700.00 | Window Closed / Lapsed |