US5034032A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air cleaner and air filter
Assignee: SHIRAISHI KATSUMUNE
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Filing: 1989-06-05
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Granted: 1991-07-23
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Expires: 2009-06-05
Abstract
Abstract An air cleaner and an air filter for removing charged ozone in the air includes an air filter having a carbon filter for adsorbing charged ozone in an air path of the air cleaner and converting ozone adsorbed in the carbon filter to oxygen and carbon dioxide by a chemical reaction. A positive voltage is applied to the carbon filter.
Inventors
- 👤 Kunio Yikai
- 👤 Hiroaki Kanazawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:57
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/02; B01; B01D; B01D46/00; B01D50/00; B03C3/04; B03C3/14; B03C3/155; F; F24; F24F; F24F8/00; F24F8/80
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
136 words
An air cleaner comprising a case body, an air inlet in said case body, an air outlet in said case body, an air path in said case body for communication of air between said air outlet and said air inlet, at least one fan mounted within said air path in order to suck air from said air inlet and exhaust it from said air outlet, a carbon filter body mounted in said air path, a source of voltage having a positive terminal mounted in said case body, said source of voltage comprising means for applying a positive voltage substantially from 6 to 24 volts between said positive terminal and a ground, and means for connecting said carbon filter body between said positive terminal and said ground for impressing said positive voltage to said carbon filter body.
Claim 2
Dependent Claim
136 words
An air cleaner comprising a case body, an air inlet in said case body, an air outlet in said case body, an air path in said case body for communication of air between said air outlet and said air inlet, at least one fan mounted within said air path in order to suck air from said air inlet and exhaust it from said air outlet, a carbon filter body mounted in said air path, a source of voltage having a positive terminal mounted in said case body, said source of voltage comprising means for applying a positive voltage substantially from 6 to 24 volts between said positive terminal and a ground, and means for connecting said carbon filter body between said positive terminal and said ground for impressing said positive voltage to said carbon filter body.
Claim 3
Dependent Claim
155 words
An air cleaner comprising a case body, an air inlet in said case body, an air outlet in said case body, an air path in said case body for communication of air between said air outlet and said air inlet, at least one fan mounted within said air path in order to suck air from said air inlet and exhaust it from said air outlet, means for electrically charging ozone mounted in said air path, a carbon filter body mounted in said air path downstream from said electrifying apparatus in said air path, a source of voltage having a positive terminal mounted in said case body, said source of voltage comprising means for applying a positive voltage substantially from 6 to 24 volts between said positive terminal and a ground, and means for connecting said carbon filter body between said positive terminal and said ground for impressing said positive voltage to said carbon filter body.
Claim 4
Dependent Claim
155 words
An air cleaner comprising a case body, an air inlet in said case body, an air outlet in said case body, an air path in said case body for communication of air between said air outlet and said air inlet, at least one fan mounted within said air path in order to suck air from said air inlet and exhaust it from said air outlet, means for electrically charging ozone mounted in said air path, a carbon filter body mounted in said air path downstream from said electrifying apparatus in said air path, a source of voltage having a positive terminal mounted in said case body, said source of voltage comprising means for applying a positive voltage substantially from 6 to 24 volts between said positive terminal and a ground, and means for connecting said carbon filter body between said positive terminal and said ground for impressing said positive voltage to said carbon filter body.
Claim 5
Dependent Claim
173 words
An air cleaner comprising a case body, an air inlet in said case body, an air outlet in said case body, an air path in said case body for communication of air between said air outlet and said air inlet, at least one fan mounted within said air path in order to suck air from said air inlet and exhaust it from said air outlet, a dust removing filter mounted removably in said case body in order to screen said air inlet to be able to keep air flow passing therethrough, a carbon filter body mounted removably in said air path which is able to keep air flow passing therethrough, a source of a voltage having a positive terminal mounted in said case body, said source of voltage comprising means for applying a positive voltage substantially from 6 to 24 volts between said positive terminal and a ground, and means for connecting said carbon filter body between said positive terminal and said ground for impressing said positive voltage to said carbon filter body.
Claim 6
Dependent Claim
173 words
An air cleaner comprising a case body, an air inlet in said case body, an air outlet in said case body, an air path in said case body for communication of air between said air outlet and said air inlet, at least one fan mounted within said air path in order to suck air from said air inlet and exhaust it from said air outlet, a dust removing filter mounted removably in said case body in order to screen said air inlet to be able to keep air flow passing therethrough, a carbon filter body mounted removably in said air path which is able to keep air flow passing therethrough, a source of a voltage having a positive terminal mounted in said case body, said source of voltage comprising means for applying a positive voltage substantially from 6 to 24 volts between said positive terminal and a ground, and means for connecting said carbon filter body between said positive terminal and said ground for impressing said positive voltage to said carbon filter body.
Claim 7
Dependent Claim
78 words
An air cleaner comprising a filter mount provided in a duct, a carbon filter body mounted removably in said filter mount and insulated from said duct and positioned to be able to keep air flow passing therethrough, a source of a low direct voltage substantially from 6 to 24 volts connected to apply said voltage as a positive voltage to said carbon filter body, and means for passing air through said filter while said voltage is applied thereto.
Claim 8
Dependent Claim
78 words
An air cleaner comprising a filter mount provided in a duct, a carbon filter body mounted removably in said filter mount and insulated from said duct and positioned to be able to keep air flow passing therethrough, a source of a low direct voltage substantially from 6 to 24 volts connected to apply said voltage as a positive voltage to said carbon filter body, and means for passing air through said filter while said voltage is applied thereto.
Claim 9
Dependent Claim
61 words
An air filter comprising a carbon filter body having a number of fine holes allowing the passage of air therethrough, a source of a low direct voltage substantially from 6 to 24 volts connected to apply said voltage as a positive voltage to said carbon filter body, and means for passing air through said filter while said voltage is applied thereto.
Claim 10
Dependent Claim
61 words
An air filter comprising a carbon filter body having a number of fine holes allowing the passage of air therethrough, a source of a low direct voltage substantially from 6 to 24 volts connected to apply said voltage as a positive voltage to said carbon filter body, and means for passing air through said filter while said voltage is applied thereto.
Claim 11
Dependent Claim
62 words
An air filter comprising a carbon filter body made from fibrous carbon or activated carbon allowing the passage of air therethrough, a source of a low direct voltage substantially from 6 to 24 volts connected to apply said voltage as a positive voltage to said carbon filter body, and means for passing air through said filter while said voltage is applied thereto.
Claim 12
Dependent Claim
62 words
An air filter comprising a carbon filter body made from fibrous carbon or activated carbon allowing the passage of air therethrough, a source of a low direct voltage substantially from 6 to 24 volts connected to apply said voltage as a positive voltage to said carbon filter body, and means for passing air through said filter while said voltage is applied thereto.
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) | 1994-07-22 | 1995-01-21 | 1995-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-22 | 1999-01-21 | 1999-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-22 | 2003-01-21 | 2003-07-23 | $7700.00 | Window Closed / Lapsed |