US5075808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retaining clamp for a disc storage apparatus
Assignee: Toshiba Corp
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Filing: 1989-10-30
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Granted: 1991-12-24
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Expires: 2009-10-30
Abstract
Abstract In the present invention, an improved retaining member for a disc drive is disclosed. The disc drive has a spindle with a plurality of data storage discs mounted on the spindle. The retaining member is in the shape of a ring with a central hole and a plurality of spaced-apart teeth-shaped members positioned circumferentially about the ring and protruding into the central hole. The retaining member is positioned with the spindle through the central hole and substantially abuts one of the data storage discs. The plurality of teeth-shaped members are urged against the side of the spindle.
Inventors
- 👤 James L. Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:24
CPC Classifications
G; G11; G11B; G11B25/00; G11B25/04; G11B17/00; G11B17/02; G11B17/038
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
123 words
In a disc storage apparatus having a spindle with a central axis, a plurality of data storage discs mounted on said spindle, and motor means connected to said spindle for rotating said discs, wherein the improvement comprising: a retaining member in the shape of a ring with a central hole and a plurality of spaced-apart tooth-shaped members positioned circumferentially about said ring protruding into said central hole; said retaining member positioned with said spindle through said central hole, with said retaining member substantially abutting one of said data storage discs, with said plurality of tooth-shaped members urging against a side of said spindle substantially parallel to said central axis thereby clamping said data storage discs by said tooth-shaped members urging against said side.
Claim 2
Dependent Claim
123 words
In a disc storage apparatus having a spindle with a central axis, a plurality of data storage discs mounted on said spindle, and motor means connected to said spindle for rotating said discs, wherein the improvement comprising: a retaining member in the shape of a ring with a central hole and a plurality of spaced-apart tooth-shaped members positioned circumferentially about said ring protruding into said central hole; said retaining member positioned with said spindle through said central hole, with said retaining member substantially abutting one of said data storage discs, with said plurality of tooth-shaped members urging against a side of said spindle substantially parallel to said central axis thereby clamping said data storage discs by said tooth-shaped members urging against said side.
Claim 3
Dependent Claim
12 words
The apparatus of claim 1, wherein said discs are made of glass.
Claim 4
Dependent Claim
119 words
A disc drive comprising: a base; a spindle having an axis; a plurality of data storage discs mounted on said spindle; motor means on said base, connected to said spindle for rotating said discs about said axis; a retaining clamp in the shape of a ring with a central hole and a plurality of spaced-apart tooth-shaped members positioned circumferentially about said ring protruding into said central hole; said retaining clamp positioned with said spindle through said central hole, and substantially abutting one of said data storage discs with said plurality of tooth-shaped members urging against a side of said spindle substantially parallel to said axis thereby clamping said data storage discs by said tooth-shaped members urging against said side.
Claim 5
Dependent Claim
119 words
A disc drive comprising: a base; a spindle having an axis; a plurality of data storage discs mounted on said spindle; motor means on said base, connected to said spindle for rotating said discs about said axis; a retaining clamp in the shape of a ring with a central hole and a plurality of spaced-apart tooth-shaped members positioned circumferentially about said ring protruding into said central hole; said retaining clamp positioned with said spindle through said central hole, and substantially abutting one of said data storage discs with said plurality of tooth-shaped members urging against a side of said spindle substantially parallel to said axis thereby clamping said data storage discs by said tooth-shaped members urging against said side.
Claim 6
Dependent Claim
12 words
The apparatus of claim 3, wherein said discs are made of glass.
Claim 7
Dependent Claim
132 words
In a new use of a retaining member in the shape of a ring with a central hole and a plurality of spaced-apart tooth-shaped members positioned circumferentially about said ring protruding into said central hole, wherein said method comprising: inserting said retaining member over a spindle of a disc drive having a central axis with a plurality of data storage discs mounted therein, with said spindle through said central hole, moving said retaining member in a direction substantially parallel to said central axis to said discs until said retaining member abuts substantially against one of said data storage discs with said plurality of tooth-shaped members urging against a side of said spindle substantially parallel to said central axis thereby clamping said data storage discs by said tooth-shaped members urging against said side.
Claim 8
Dependent Claim
132 words
In a new use of a retaining member in the shape of a ring with a central hole and a plurality of spaced-apart tooth-shaped members positioned circumferentially about said ring protruding into said central hole, wherein said method comprising: inserting said retaining member over a spindle of a disc drive having a central axis with a plurality of data storage discs mounted therein, with said spindle through said central hole, moving said retaining member in a direction substantially parallel to said central axis to said discs until said retaining member abuts substantially against one of said data storage discs with said plurality of tooth-shaped members urging against a side of said spindle substantially parallel to said central axis thereby clamping said data storage discs by said tooth-shaped members urging against said side.
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) | 1994-12-23 | 1995-06-24 | 1995-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-23 | 1999-06-24 | 1999-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-23 | 2003-06-24 | 2003-12-24 | $7700.00 | Window Closed / Lapsed |