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Patent US3311902A successfully refreshed from Google Patents.
US3311902A
Expired / Lapsed
US
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Air bearing magnetic transducer
Assignee: Unisys Corp
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Filing: 1960-12-21
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Granted: 1967-03-28
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Expires: 1980-12-21
Abstract
No abstract record available.
Inventors
- 👤 Norman J Appleton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:53
CPC Classifications
G; G11; G11B; G11B17/00; G11B17/02; G11B17/021; G11B5/00; G11B5/48; G11B5/54; G11B5/55; G11B5/5521; G11B5/56; G11B5/58; G11B5/60; G11B5/6005
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
115 words
IN A RECORDING APPARATUS; A SLIDER BLOCK HEAD MEMBER WITH A LEADING EDGE AND A TRAILING EDGE ADAPTED FOR USE WITH A BODY HAVING A MOVING RECORD SURFACE CARRYING WITH IT A LAYER OF FLUID; MEMBER POSITIONING MEANS COMPRISING FIRST, SECOND AND THIRD FRAME ELEMENTS, FIRST PIVOT BEARING MEANS COUPLING SAID FIRST FRAME ELEMENT TO SAID MEMBER ON A PIVOT AXIS PARALLEL WITH ITS LEADING AND TRAILING EDGES FOR ADJUSTING THE INCLINATION OF SAID MEMBER WITH THE RECORD SURFACE OF SAID BODY IN RESPONSE TO THE FORCE OF SAID FLUID ON SAID MEMBER; SAID AXIS BEING POSITIONED CLOSER TO THE TRAILING EDGE THAN TO THE LEADING EDGE OF SAID MEMBER; SECOND PIVOT BEARING MEANS COU-
References Cited (Backward Citations)
US2862781A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-27 | 1970-09-26 | 1971-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-27 | 1974-09-26 | 1975-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-27 | 1978-09-26 | 1979-03-28 | $7700.00 | Window Closed / Lapsed |