Patent US3166997A successfully refreshed from Google Patents.
US3166997A
Expired / Lapsed
US
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Hydrostatic film disc stabilizer and spacer
Assignee: International Business Machines Corp
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Filing: 1961-06-28
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Granted: 1965-01-26
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Expires: 1981-06-28
Abstract
No abstract record available.
Inventors
- 👤 Casper L Barcia
- 👤 Henri A Khoury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:34
CPC Classifications
G; G11; G11B; G11B17/00; G11B17/02; G11B17/022; G11B17/028; G11B17/0284; F; F16; F16C; F16C32/00; F16C32/06; F16C32/0681; F16C32/0692; G11B17/32; G11B21/00; G11B21/16; G11B21/20; G11B5/00; G11B5/48; G11B5/58; G11B5/60; G11B5/6005; G11B7/00; G11B7/08; G11B7/09; G11B7/0908
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
APPARATUS FOR STABILIZING A FELXIBLE DISC AT AT LEAST ONE RADIAL POINT COMPRISING, IN COMBINATION, A PLANE CIRCULAR RECORD DISCO OF FLEXIBLE MATERIAL, MEANS FOR ROTATING SAID DISC, A PAIR OF ELEMENTS HAVING OPPOSING AIR BEARING SURFACES POSITIONED AT SAID RADIAL POINT ADJACENT TO OPPOSITE SIDE OF SAID DISC, EACH SAID ELEMENT HAVING AN EXTERNAL AIR SUPPLY AND A PLURALITY OF ORIFICES DIRECTING AIR FROM SAID OPPOSED SURFACES AGAINST SAID DISC AND EACH SAID ELEMENT HAVING A CENTRAL APERTURE ASSOCIATED WITH RECORD TRANSDUCER MEANS.
Claim 2
Dependent Claim
84 words
APPARATUS FOR STABILIZING A FELXIBLE DISC AT AT LEAST ONE RADIAL POINT COMPRISING, IN COMBINATION, A PLANE CIRCULAR RECORD DISCO OF FLEXIBLE MATERIAL, MEANS FOR ROTATING SAID DISC, A PAIR OF ELEMENTS HAVING OPPOSING AIR BEARING SURFACES POSITIONED AT SAID RADIAL POINT ADJACENT TO OPPOSITE SIDE OF SAID DISC, EACH SAID ELEMENT HAVING AN EXTERNAL AIR SUPPLY AND A PLURALITY OF ORIFICES DIRECTING AIR FROM SAID OPPOSED SURFACES AGAINST SAID DISC AND EACH SAID ELEMENT HAVING A CENTRAL APERTURE ASSOCIATED WITH RECORD TRANSDUCER MEANS.
References Cited (Backward Citations)
FR1211792A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-01-26 | 1968-07-27 | 1969-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-26 | 1972-07-27 | 1973-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-26 | 1976-07-27 | 1977-01-26 | $7700.00 | Window Closed / Lapsed |