US4437132A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible magnetic disk device
Assignee: Alps Alpine Co Ltd
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Filing: 1981-10-05
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Granted: 1984-03-13
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Expires: 2001-10-05
Abstract
Abstract A flexible magnetic disk device in which a solenoid is disposed in parallel with the surface of a magnetic disk, and a supporting arm to be turned perpendicularly to the disk surface by the solenoid is juxtaposed to the disk surface, whereby the magnetic disk device can be thinned.
Inventors
- 👤 Motohiro Shimaoka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:26
CPC Classifications
G; G11; G11B; G11B17/00; G11B17/02; G11B17/022; G11B17/028; G11B17/0284; G11B17/0286; G11B17/0288; G11B17/03; G11B17/32
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
110 words
In a flexible magnetic disk device wherein a magnetic head and a loading pad opposing thereto are disposed on a carriage in a manner to hold therebetween a magnetic disk loaded rotatably and to be movable radially of the magnetic disk and wherein the loading pad has its operation cntrolled by a supporting arm which is turned by a solenoid a prescribed amount within a plane perpendicular to the surface of the magnetic disk; the improvement in that said solenoid is disposed with its axis being substantially parallel to the surface of said magnetic disk and that said supporting arm is juxtaposed to the disk surface along with said solenoid.
Claim 2
Dependent Claim
110 words
In a flexible magnetic disk device wherein a magnetic head and a loading pad opposing thereto are disposed on a carriage in a manner to hold therebetween a magnetic disk loaded rotatably and to be movable radially of the magnetic disk and wherein the loading pad has its operation cntrolled by a supporting arm which is turned by a solenoid a prescribed amount within a plane perpendicular to the surface of the magnetic disk; the improvement in that said solenoid is disposed with its axis being substantially parallel to the surface of said magnetic disk and that said supporting arm is juxtaposed to the disk surface along with said solenoid.
Claim 3
Dependent Claim
47 words
A flexible magnetic disk device according to claim 1, wherein a plunger of said solenoid is protruded on a side opposite to said carriage, and said plunger is connected to a plunger mounting portion which is bent downwards from a supporting arm-mounting plate of said supporting arm.
Claim 4
Dependent Claim
21 words
A flexible magnetic disk device according to claim 1, wherein said supporting arm is located so as to surround said solenoid.
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) | 1987-03-13 | 1987-09-12 | 1988-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-13 | 1991-09-12 | 1992-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-13 | 1995-09-12 | 1996-03-13 | $7700.00 | Window Closed / Lapsed |