US3320599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mounting and actuating apparatus for a magnetic head
Assignee: Unisys Corp
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Filing: 1963-06-07
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Granted: 1967-05-16
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Expires: 1983-06-07
Abstract
No abstract record available.
Inventors
- 👤 Shahbuddin A Billawala
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:48
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/49; G11B5/4969; G11B5/58; G11B5/60; G11B5/6005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
IN A STORAGE APPARATUS INCLUDING A PLURALITY OF DISK SURFACES ROTATING IN A FLUID ATMOSPHERE SO AS TO FORM A FLUID BEARING ADJACENT THERETO, EACH DISC SURFACE INCLUDING A PLURALITY OF CIRCULAR MAGNETIC TRACKS POSITIONED AT DIFFERENT RADIAL POSITIONS THEREON, EACH OF SAID TRACKS ON EACH DISK SURFACE BEING ARRANGED AT THE SAME RADIAL POSITION AS A TRACK ON EACH OF THE OTHER DISK SURFACES, AT LEAST ONE MAGNETIC HEAD FOR EACH OF SAID TRACKS SUPPORTED TO ALLOW ACTUATION ONTO THE FLUID BEARING ADJACENT THE CORRESPONDING TRACK, MEANS FOR EACH OF SAID HEADS COMPRISING A FLUID CHAMBER INCLUDING AN INPUT PORT AND A PLUNGER EXTENDING OUT OF SAID CHAMBER AND ACTUATED BY FLUID PRESSURE IN THE CHAMBER FOR APPLYING A FORCE TO THE CORRESPONDING HEAD FOR MOVING SAME INTO A FLOATING POSITION ON THE ASSOCIATED FLUID BEARING, AND AN ADJUSTABLE PRESSURE REGULATING DEVICE FOR EACH DIFFERENT RADIAL POSITION OF THE HEADS FOR COUPLING A PRESSURE SOURCE TO THE INPUT PORT OF EACH OF THE FLUID CHAMBERS FOR THE HEADS AT CORRESPONDING RADIAL
Claim 2
Dependent Claim
172 words
IN A STORAGE APPARATUS INCLUDING A PLURALITY OF DISK SURFACES ROTATING IN A FLUID ATMOSPHERE SO AS TO FORM A FLUID BEARING ADJACENT THERETO, EACH DISC SURFACE INCLUDING A PLURALITY OF CIRCULAR MAGNETIC TRACKS POSITIONED AT DIFFERENT RADIAL POSITIONS THEREON, EACH OF SAID TRACKS ON EACH DISK SURFACE BEING ARRANGED AT THE SAME RADIAL POSITION AS A TRACK ON EACH OF THE OTHER DISK SURFACES, AT LEAST ONE MAGNETIC HEAD FOR EACH OF SAID TRACKS SUPPORTED TO ALLOW ACTUATION ONTO THE FLUID BEARING ADJACENT THE CORRESPONDING TRACK, MEANS FOR EACH OF SAID HEADS COMPRISING A FLUID CHAMBER INCLUDING AN INPUT PORT AND A PLUNGER EXTENDING OUT OF SAID CHAMBER AND ACTUATED BY FLUID PRESSURE IN THE CHAMBER FOR APPLYING A FORCE TO THE CORRESPONDING HEAD FOR MOVING SAME INTO A FLOATING POSITION ON THE ASSOCIATED FLUID BEARING, AND AN ADJUSTABLE PRESSURE REGULATING DEVICE FOR EACH DIFFERENT RADIAL POSITION OF THE HEADS FOR COUPLING A PRESSURE SOURCE TO THE INPUT PORT OF EACH OF THE FLUID CHAMBERS FOR THE HEADS AT CORRESPONDING RADIAL
References Cited (Backward Citations)
US3051954A
Cited
US3229268A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-15 | 1970-11-14 | 1971-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-15 | 1974-11-14 | 1975-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-15 | 1978-11-14 | 1979-05-16 | $7700.00 | Window Closed / Lapsed |