US4967295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Humidity regulating apparatus for magnetic disk drive
Assignee: Mitsubishi Electric Corp
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Filing: 1988-06-08
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Granted: 1990-10-30
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Expires: 2008-06-08
Abstract
Abstract Apparatus for regulating the humidity inside a semi-sealed, partly air-permeable container for a magnetic disk drive. An opening provided in the semi-sealed container is sealed by an insulated humidity regulating element which includes a hydrogen ion conductor (which may be a solid electrolyte) and porous film-like first and second electrodes that are bonded to respective surfaces of both sides of the hydrogen ion conductor. A DC voltage is impressed across both electrodes to regulate the humidity.
Inventors
- 👤 Shiro Yamauchi
- 👤 Naotake Rito
- 👤 Nobuyoshi Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:16
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/26; B01D53/32; B01D53/326; G; G11; G11B; G11B33/00; G11B33/14; G11B33/1446; G11B33/1453
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
145 words
A humidity regulating apparatus comprising: a semi-sealed partly air-permeable container having an opening in a walled thereof; a hydrogen ion conductor provided in the opening, aid conductor comprising a solid electrolyte and having an inner surface facing an interior of said container and an outer surface facing toward outside air; a first porous film-like electrode that is bonded to the inner surface of said hydrogen ion conductor; a second porous film-like electrode that is bonded to the outer surface of said hydrogen ion conductor; insulating material for electrically insulating said hydrogen ion conductor, and said first and second electrodes from said semisealed type container, said insulating material sealing said opening; and a first power supply for impressing a first DC voltage across said first and second electrodes so as to induce an electrolytic reaction in said hydrogen ion conductor for regulating humidity within said container.
Claim 2
Dependent Claim
145 words
A humidity regulating apparatus comprising: a semi-sealed partly air-permeable container having an opening in a walled thereof; a hydrogen ion conductor provided in the opening, aid conductor comprising a solid electrolyte and having an inner surface facing an interior of said container and an outer surface facing toward outside air; a first porous film-like electrode that is bonded to the inner surface of said hydrogen ion conductor; a second porous film-like electrode that is bonded to the outer surface of said hydrogen ion conductor; insulating material for electrically insulating said hydrogen ion conductor, and said first and second electrodes from said semisealed type container, said insulating material sealing said opening; and a first power supply for impressing a first DC voltage across said first and second electrodes so as to induce an electrolytic reaction in said hydrogen ion conductor for regulating humidity within said container.
Claim 3
Dependent Claim
33 words
A humidity regulating apparatus as claimed in claim 1, further including: a heater embedded in the hydrogen ion conductor; and a second power supply for impressing a second DC voltage across said heater.
Claim 4
Dependent Claim
23 words
A humidity regulating apparatus as claimed in claim 1, wherein the first electrode is the anode and the second electrode is the cathode.
Claim 5
Dependent Claim
15 words
A humidity regulating apparatus as claimed in claim 3, wherein said power supply is variable.
Claim 6
Dependent Claim
19 words
A humidity regulating apparatus as claimed in claim 1 wherein the hydrogen ion conductor is a solid polymer electrolyte.
Claim 7
Dependent Claim
19 words
A humidity regulating apparatus as claimed in claim 5, wherein the solid polymer electrolyte is an ion exchange resin.
Claim 8
Dependent Claim
19 words
A humidity regulating apparatus as claimed in claim 1, wherein the hydrogen ion conductor is an inorganic solid electrolyte.
Claim 9
Dependent Claim
18 words
A humidity regulating apparatus as claimed in claim 7, wherein the inorganic solid electrolyte is a β-alumina substitute.
References Cited (Backward Citations)
US3547348A
Cited
US3840176A
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JPS5238909A
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US4307425A
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US4620248A
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US4642715A
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US4685303A
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US4684510A
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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) | 1993-10-29 | 1994-04-30 | 1994-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-29 | 1998-04-30 | 1998-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-29 | 2002-04-30 | 2002-10-30 | $7700.00 | Window Closed / Lapsed |