Patent US1257873A successfully refreshed from Google Patents.
Patent US3914791A successfully refreshed from Google Patents.
US3914791A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Memory unit flying pad linkage
Assignee: Vrc California Inc
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Filing: 1974-01-28
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Granted: 1975-10-21
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Expires: 1994-01-28
Abstract
Abstract A disc drive information storage unit is disclosed having a fixed operative position head mount coupled flying pad and a linear motor responsive reciprocative head mount coupled flying pad and in which both the reciprocative flying pad and the fixed flying pad are landed, positioned and unlanded by a lateral and vertical movement with respect to a medium and the fixed flying pad is landed and positioned or unlanded in response to a landing or unlanding motion, respectively, of the reciprocative head mount. A linkage includes a pivotally base coupled reciprocative head mount responsive first element coupled to a pivotally base coupled fixed head mount motion imparting second element. The fixed head mount is biased towards the medium by a constant force spring while a stop element limits the travel of the fixed head mount and coupled flying pad beyond an operative position. In operation, a landing directed motion of the reciprocative head mount allows a rotation of the first element, a counter rotation of the second element and a landing and operative positioning of the fixed flying pad as biased by the spring and limited by the stop element. An unlanding motion of the reciprocative head mount induces an opposite rotation and counter rotation of the first and second elements and unlands the fixed flying pad.
Inventors
- 👤 Robert F Stebe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:39
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/54; G11B5/58; G11B5/60
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
108 words
In an information storage system in which a medium is movable with respect to a plurality of flying pads, the combination therewith comprising: first head mount means coupled to a base for positioning a first flying pad means over a first portion of the medium; second head mount means coupled to the base spatially separated from the first means for positioning a second flying pad means over a second portion of the medium; and means providing a motion relative to the first head mount means for causing a lateral motion of the second head mount means in response to a lateral travel of the first head mount means.
Claim 2
Dependent Claim
108 words
In an information storage system in which a medium is movable with respect to a plurality of flying pads, the combination therewith comprising: first head mount means coupled to a base for positioning a first flying pad means over a first portion of the medium; second head mount means coupled to the base spatially separated from the first means for positioning a second flying pad means over a second portion of the medium; and means providing a motion relative to the first head mount means for causing a lateral motion of the second head mount means in response to a lateral travel of the first head mount means.
Claim 3
Dependent Claim
88 words
The invention as set forth in claim 1 and in which said means providing a motion relative to the first head mount means comprises: first coupling means pivotally attached to the base for providing a movement in response to a movement of the first head mount means; second coupling means pivotally attached to the base remote from the location of a pivotal attachment of the first coupling means for causing a motion to the second head mount means in response to the movement of the first coupling means.
Claim 4
Dependent Claim
79 words
The invention as set forth in claim 1 and further comprising: motor means coupled to the first head mount means for imparting a linear motion thereto; a positioning system coupled to the motor means for causing the motor means to position the first flying pad means over a selected location of the first portion; and wherein the first portion comprises a substantial plurality of concentric data storage tracks; and the second portion comprises at least one data storage track.
Claim 5
Dependent Claim
115 words
The invention as set forth in claim 3 and in which: the means responsive to the first head mount means comprises a first element pivotally mounted to the base for providing a rotational motion in response to a limited travel of the first head mount means and a second element pivotally mounted on the base for imparting a motion to the second head mount means in response to the rotational motion; biasing means coupled between the base and the second head mount means for urging the second flying pad means towards the second portion; and stop means coupled to the base for limiting the travel of the second flying pad means beyond the second portion.
Claim 6
Dependent Claim
117 words
An information storage system comprising: first flying pad means coupled to a base for communicating with a multi-track operative region of a movable magnetic medium, the first flying pad means movable through the multi-track operative region; second flying pad means coupled to the base remote from the first flying pad means for communicating with a fixed operative region; means providing a linear motion for moving the first flying pad means to a landed relationship with the medium; and means responsive to the linear motion including a rotatable linkage operatively coupled between the first and second flying pad means for landing the second flying pad means and moving the second flying pad means over the fixed operative region.
Claim 7
Dependent Claim
117 words
An information storage system comprising: first flying pad means coupled to a base for communicating with a multi-track operative region of a movable magnetic medium, the first flying pad means movable through the multi-track operative region; second flying pad means coupled to the base remote from the first flying pad means for communicating with a fixed operative region; means providing a linear motion for moving the first flying pad means to a landed relationship with the medium; and means responsive to the linear motion including a rotatable linkage operatively coupled between the first and second flying pad means for landing the second flying pad means and moving the second flying pad means over the fixed operative region.
Claim 8
Dependent Claim
41 words
The invention as set forth in claim 5 and in which the second flying pad means is advanced with respect to the first flying pad means such that the second flying pad means lands prior to the first flying pad means.
Claim 9
Dependent Claim
57 words
The invention as set forth in claim 6 and further comprising: stop means coupled to the base for limiting the travel of the second flying pad means beyond the fixed operative region; and biasing means coupled between the base and the second flying pad means for urging the second flying pad means towards the fixed operative region.
Claim 10
Dependent Claim
230 words
An information storage system in which a plurality of flying pads communicate with a magnetic surface and comprising: a base; a first head mount movably coupled to the base and responsive to a linear motor; a second head mount movably coupled to the base remote from the first head mount; a first linkage element pivotally attached to the base responsive to a motion of the first head mount; a second linkage element pivotally attached to the base responsive to the first linkage element for imparting a motion to the second head mount; a constant force biasing means coupled between the base and the second head mount; stop means coupled to the base for limiting the travel of the second head mount; a first arm supporting a first flying pad coupled to the first head mount and having an inclined surface bearing on an element mounted on the base for causing a distance between the flying pad and the magnetic surface to change in relation to lateral travel; and a second arm supporting a second flying pad coupled to the second head mount and having an inclined surface bearing on an element mounted on the base for causing a distance between the associated flying pad and the magnetic surface to change in relation to lateral travel in advance of the change in distance of the flying pad of the first arm.
Claim 11
Dependent Claim
230 words
An information storage system in which a plurality of flying pads communicate with a magnetic surface and comprising: a base; a first head mount movably coupled to the base and responsive to a linear motor; a second head mount movably coupled to the base remote from the first head mount; a first linkage element pivotally attached to the base responsive to a motion of the first head mount; a second linkage element pivotally attached to the base responsive to the first linkage element for imparting a motion to the second head mount; a constant force biasing means coupled between the base and the second head mount; stop means coupled to the base for limiting the travel of the second head mount; a first arm supporting a first flying pad coupled to the first head mount and having an inclined surface bearing on an element mounted on the base for causing a distance between the flying pad and the magnetic surface to change in relation to lateral travel; and a second arm supporting a second flying pad coupled to the second head mount and having an inclined surface bearing on an element mounted on the base for causing a distance between the associated flying pad and the magnetic surface to change in relation to lateral travel in advance of the change in distance of the flying pad of the first arm.
Claim 12
Dependent Claim
64 words
The invention as set forth in claim 8 and in which: the second head mount is attached to a table having bearing means for slideably coupling the table to the base and in which the stop means comprises an element adjustably coupled to the table and having an eccentric circumferential surface, a travel of which is limited by a plate extending from the base.
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) | 1978-10-20 | 1979-04-21 | 1979-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-20 | 1983-04-21 | 1983-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-20 | 1987-04-21 | 1987-10-21 | $7700.00 | Window Closed / Lapsed |