Patent US5418775A successfully refreshed from Google Patents.
US5418775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressurized disk drive interior for air cooling and dust prevention
Assignee: NSK Ltd
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Filing: 1993-08-30
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Granted: 1995-05-23
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Expires: 2013-08-30
Abstract
Abstract The interior of a casing or housing 8 for an optical disk drive apparatus is divided into a first space S1 where a optical head 3, an optical disk loading mechanism 7 and a means 15 for increasing the pressure to prevent the entrance of dust and dirt into the first space S1 from the outside are positioned and a second space S2 where an electrical equipment section 5, a power supply section 6 and a motor-driven fan 9 for cooling the second space S2 are positioned, whereby it is possible to effectively cool the electrical equipment section 5 and the power supply section 6 in the second space S2, as well as to prevent the optical head 3 in the first space S1 from being contaminated by dust and dirt, so that the operation of this optical disk drive apparatus can be effectively maintained in a stable condition.
Inventors
- 👤 Hideki Okatani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:48
CPC Classifications
G; G11; G11B; G11B33/00; G11B33/14; G11B33/1446; G11B33/1406
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
103 words
An optical disk drive apparatus comprising a housing having an interior, and a main chassis extending through the interior of the housing so that the interior of the housing is divided by means of the main chassis into a first space and a second space stacked vertically with respect to one another, the first space formed to house an optical head, an optical disk loading mechanism, a turn table and a means for increasing the pressure in the first space, and the second space formed to house an electrical equipment section, a power supply section and a means for cooling the second space.
Claim 2
Dependent Claim
103 words
An optical disk drive apparatus comprising a housing having an interior, and a main chassis extending through the interior of the housing so that the interior of the housing is divided by means of the main chassis into a first space and a second space stacked vertically with respect to one another, the first space formed to house an optical head, an optical disk loading mechanism, a turn table and a means for increasing the pressure in the first space, and the second space formed to house an electrical equipment section, a power supply section and a means for cooling the second space.
Claim 3
Dependent Claim
26 words
The optical disk drive apparatus of claim 1, wherein the spindle motor and the mechanism for shifting the optical head are mounted to the main chassis.
Claim 4
Dependent Claim
29 words
The optical disk drive apparatus of claim 2, wherein the spindle motor has a spindle extending through the main chassis, and the turn table is connected to the spindle.
Claim 5
Dependent Claim
31 words
The optical disk drive apparatus of claim 2, wherein the optical head projects from the main chassis and connected through the main chassis to the mechanism for shifting the optical head.
Claim 6
Dependent Claim
34 words
The optical disk drive apparatus of claim 1, wherein the first space is isolated from the second space, and the means for cooling the second space is provided in flow communication with outside air.
Claim 7
Dependent Claim
36 words
The optical disk drive apparatus of claim 1, wherein the means for cooling the second space is provided through the main chassis, so that the first space is placed in flow communication with the second space.
Claim 8
Dependent Claim
131 words
An optical disk drive apparatus for a disk cartridge comprising a housing having an interior, and a main chassis extending through the interior of the housing so that the interior of the housing is divided by means of the main chassis into a first space and a second space stacked vertically with respect to one another, the first space formed to house an optical head, an optical disk loading mechanism, a turn table and a means for increasing the pressure in the first space, the second space formed to house an electrical equipment section, a power supply section and a means for cooling the second space, and wherein said means for increasing the pressure in the first space operates to increase the pressure during insertion and removal of the disk cartridge.
Claim 9
Dependent Claim
131 words
An optical disk drive apparatus for a disk cartridge comprising a housing having an interior, and a main chassis extending through the interior of the housing so that the interior of the housing is divided by means of the main chassis into a first space and a second space stacked vertically with respect to one another, the first space formed to house an optical head, an optical disk loading mechanism, a turn table and a means for increasing the pressure in the first space, the second space formed to house an electrical equipment section, a power supply section and a means for cooling the second space, and wherein said means for increasing the pressure in the first space operates to increase the pressure during insertion and removal of the disk cartridge.
Claim 10
Dependent Claim
41 words
The optical disk drive apparatus of claim 7, further comprising an air filter arranged in said first space, said means for increasing the pressure operating to pass outside air through said air filter into the first space to increase the pressure.
References Cited (Backward Citations)
US4680656A
Cited
US4642715A
Cited
JPH03225691A
Cited
US5301178A
Cited
US5255137A
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US5255256A
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US5303220A
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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) | 1998-05-22 | 1998-11-21 | 1999-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-05-22 | 2002-11-21 | 2003-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-05-22 | 2006-11-21 | 2007-05-23 | $7700.00 | Window Closed / Lapsed |