US4246618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floppy disc drive unit
Assignee: Siemens AG
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Filing: 1979-03-09
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Granted: 1981-01-20
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Expires: 1999-03-09
Abstract
Abstract The invention concerns a floppy disc drive unit in which all the movements are made automatically with the aid of two motors. Using a positioning motor positioning a magnetic head on various tracks of the floppy disc, the floppy disc is automatically drawn into the floppy disc drive unit and ejected therefrom. With the aid of a driving motor provided to drive the floppy disc, the floppy disc is clamped and unclamped and felt pressure pads are lowered and raised automatically.
Inventors
- 👤 Paul Bauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:16
CPC Classifications
G; G11; G11B; G11B17/00; G11B17/32; G11B17/02; G11B17/022; G11B17/028; G11B17/03
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
193 words
A floppy disc drive unit comprising: a frame including means defining a receipt slot for receiving a floppy disc; a reversible positioning motor mounted in said frame, a movably mounted head carrier with a magnetic head supported thereon, said reversible positioning motor operatively coupled to said head carrier to position said magnetic head on various tracks on said disc; movably mounted grasping means for grasping a floppy disc and connecting means releasably coupling said grasping means to said positioning motor to load the floppy disc into and unload the floppy disc from the drive unit; a reversible drive motor mounted in said frame; clamping means mounted in said frame on both sides of said receipt slot, said clamping means connected to and reversibly operated by said drive motor to clamp and unclamp the floppy disc when latched and to rotate the floppy disc for transducing when unlatched; and linkage means moved by said grasping means to first and second positions, said linkage means latching said clamping means in said first position to prevent disc rotation and effect clamping and unlatching said clamping means in said second position to permit disc rotation for transducing.
Claim 2
Dependent Claim
193 words
A floppy disc drive unit comprising: a frame including means defining a receipt slot for receiving a floppy disc; a reversible positioning motor mounted in said frame, a movably mounted head carrier with a magnetic head supported thereon, said reversible positioning motor operatively coupled to said head carrier to position said magnetic head on various tracks on said disc; movably mounted grasping means for grasping a floppy disc and connecting means releasably coupling said grasping means to said positioning motor to load the floppy disc into and unload the floppy disc from the drive unit; a reversible drive motor mounted in said frame; clamping means mounted in said frame on both sides of said receipt slot, said clamping means connected to and reversibly operated by said drive motor to clamp and unclamp the floppy disc when latched and to rotate the floppy disc for transducing when unlatched; and linkage means moved by said grasping means to first and second positions, said linkage means latching said clamping means in said first position to prevent disc rotation and effect clamping and unlatching said clamping means in said second position to permit disc rotation for transducing.
Claim 3
Dependent Claim
58 words
The floppy disc drive unit of claim 1, and further comprising: pressure pads mounted on the side of said receipt slot opposite said magnetic head; and a lever means coupled between said pads and said drive motor for moving said pads into engagement with said floppy disc as said drive motor is operated to clamp the floppy disc.
Claim 4
Dependent Claim
29 words
The floppy disc drive unit of claim 2, wherein: said lever means is coupled to said drive motor via said clamping means and operates simultaneously with said clamping means.
Claim 5
Dependent Claim
53 words
The floppy disc drive unit of claim 1, wherein said grasping means includes a slot and is operated by said positioning motor to a predetermined end position, and: wherein said lever means includes a pin to be received in said slot to lock and unlock said grasping means at said predetermined end position.
Claim 6
Dependent Claim
129 words
A floppy disc drive unit comprising: a reversible positioning motor; a floppy disc loading and unloading means releasably connected to said positioning motor for grasping and loading/unloading a floppy disc; a magnetic head; a movably mounted carriage carrying said magnetic head and connected to and positioned over various tracks on the disc by said positioning motor; clamping means a reversible drive motor to clamp and unclamp a floppy magnetic disc when latched and to rotate the floppy magnetic disc past said magnetic head when unlatched; and sequence control coupling means coupled between said floppy disc loading and unloading means, said carriage and said clamping means, operated in response to the positioning and clamping operations to unlatch said loading and unloading means and said clamping means in a predetermined sequence.
Claim 7
Dependent Claim
129 words
A floppy disc drive unit comprising: a reversible positioning motor; a floppy disc loading and unloading means releasably connected to said positioning motor for grasping and loading/unloading a floppy disc; a magnetic head; a movably mounted carriage carrying said magnetic head and connected to and positioned over various tracks on the disc by said positioning motor; clamping means a reversible drive motor to clamp and unclamp a floppy magnetic disc when latched and to rotate the floppy magnetic disc past said magnetic head when unlatched; and sequence control coupling means coupled between said floppy disc loading and unloading means, said carriage and said clamping means, operated in response to the positioning and clamping operations to unlatch said loading and unloading means and said clamping means in a predetermined sequence.
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) | 1984-01-20 | 1984-07-21 | 1985-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-20 | 1988-07-21 | 1989-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-20 | 1992-07-21 | 1993-01-20 | $7700.00 | Window Closed / Lapsed |