US3720932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic recording arrangement utilizing a gas film bearing
Assignee: Individual
•
Filing: 1967-02-13
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Granted: 1973-03-13
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Expires: 1987-02-13
Abstract
Abstract The present disclosure relates to a magnetic recording arrangement utilizing a head assembly which during operation bears on a thin film of gas, such as air, in spaced relationship from a magnetic recording medium. The head itself is positioned at the end of a cantilevered spring arrangement to achieve a very small clearance between the head and the record surface.
Inventors
- 👤 B Keel
- 👤 R Perkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:16
CPC Classifications
G; G11; G11B; G11B17/00; G11B17/32; G11B5/00; G11B5/48; G11B5/58; G11B5/60; G11B5/6005
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
162 words
A magnetic recording arrangement utilizing a gas film to position a head core in spaced relationship from a recording medium when there is relative movement therebetween, comprising: a. a single first slider bearing pad (12) pivotally mounted on a support element (10) about an axis normal to the direction of movement of the recording medium (16) with respect to said first pad, said pad being separated from the recording medium, during relative movement between the pad and the recording medium, by a distance sufficient to cause a load-supporting film therebetween; b. a cantilevered spring (20) joined at one of its ends to said first bearing pad; and c. a second slider bearing pad (18) incorporating said head core, the second slider bearing pad being rigidly and nonpivotally mounted at the other end of said spring and being gas film supported at a distance from said recording medium which is less than the distance between the recording medium and said firsT bearing pad.
Claim 2
Dependent Claim
162 words
A magnetic recording arrangement utilizing a gas film to position a head core in spaced relationship from a recording medium when there is relative movement therebetween, comprising: a. a single first slider bearing pad (12) pivotally mounted on a support element (10) about an axis normal to the direction of movement of the recording medium (16) with respect to said first pad, said pad being separated from the recording medium, during relative movement between the pad and the recording medium, by a distance sufficient to cause a load-supporting film therebetween; b. a cantilevered spring (20) joined at one of its ends to said first bearing pad; and c. a second slider bearing pad (18) incorporating said head core, the second slider bearing pad being rigidly and nonpivotally mounted at the other end of said spring and being gas film supported at a distance from said recording medium which is less than the distance between the recording medium and said firsT bearing pad.
Claim 3
Dependent Claim
162 words
A magnetic recording arrangement utilizing a gas film to position a head core in spaced relationship from a recording medium when there is relative movement therebetween, comprising: a. a single first slider bearing pad (12) pivotally mounted on a support element (10) about an axis normal to the direction of movement of the recording medium (16) with respect to said first pad, said pad being separated from the recording medium, during relative movement between the pad and the recording medium, by a distance sufficient to cause a load-supporting film therebetween; b. a cantilevered spring (20) joined at one of its ends to said first bearing pad; and c. a second slider bearing pad (18) incorporating said head core, the second slider bearing pad being rigidly and non-pivotally mounted at the other end of said spring and being gas film supported at a distance from said recording medium which is less than the distance between the recording medium and said firsT bearing pad.
Claim 4
Dependent Claim
162 words
A magnetic recording arrangement utilizing a gas film to position a head core in spaced relationship from a recording medium when there is relative movement therebetween, comprising: a. a single first slider bearing pad (12) pivotally mounted on a support element (10) about an axis normal to the direction of movement of the recording medium (16) with respect to said first pad, said pad being separated from the recording medium, during relative movement between the pad and the recording medium, by a distance sufficient to cause a load-supporting film therebetween; b. a cantilevered spring (20) joined at one of its ends to said first bearing pad; and c. a second slider bearing pad (18) incorporating said head core, the second slider bearing pad being rigidly and non-pivotally mounted at the other end of said spring and being gas film supported at a distance from said recording medium which is less than the distance between the recording medium and said firsT bearing pad.
Claim 5
Dependent Claim
23 words
A magnetic recording arrangement as set forth in claim 1 wherein the spring is rigidly and non-pivotally joined to said first bearing pad.
Claim 6
Dependent Claim
60 words
A magnetic recording arrangement as set forth in claim 1, wherein said spring is of the cantilevered type and is oriented such that the movement of the recording medium is in a direction from the free end of the spring, which is connected to said second bearing pad, toward the spring end which is joined to said first bearing pad.
Claim 7
Dependent Claim
66 words
A magnetic recording arrangement as set forth in claim 3, wherein said first slider bearing pad includes an extending portion above the plane of the large bottom surface of the pad and said spring is attached to the extending portion directly above the point on the recording medium where an imaginary extension of the bottom surface of the first slider bearing pad would intersect said medium.
Claim 8
Dependent Claim
22 words
A magnetic recording arrangement as set forth in claim 1, wherein said recording medium includes a magnetic oxide surface containing an abrasive.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-12 | 1976-09-11 | 1977-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-12 | 1980-09-11 | 1981-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-12 | 1984-09-11 | 1985-03-13 | $7700.00 | Window Closed / Lapsed |