Patent US4468372A successfully refreshed from Google Patents.
US4468372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hygienic air purifying device
Assignee: ELIZABETH K HARICH CO-TRUSTEES OF QUALIFIED MARITAL TRUST
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Filing: 1981-09-30
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Granted: 1984-08-28
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Expires: 2001-09-30
Abstract
Abstract A fan draws an air stream or path, contaminated with bacteria, fungi, or viruses into a hygienic treatment device. The device includes a perforated cartridge initially confronting the air stream and carrying a plurality of silicate pellets therein. The pellets are impregnated with a germicidal agent before emplacement in the cartridge. A stack of parallel, spaced plates separated by phenolic wafers are positioned closely adjacent and slightly downstream from the cartridge. A voltage of at least 4,000 volts is supplied to the stack of metallic plates. The moving air stream generates a siphoning action on the pellets to better withdraw the germicidal agent therefrom. The germicidal agent, which is preferably a grapefruit seed extract, destroys the bacteria, fungi, and viruses, and causes airborne particles to become positively charged. The contaminated airborne particles are then collected by the negatively charged plates in the stack.
Inventors
- 👤 Reuben E. Seifert, deceased
- 👤 Jakob Harich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:36
CPC Classifications
F; F24; F24F; F24F8/00; F24F8/10; F24F8/192; A; A61; A61L; A61L9/00; A61L9/01; A61L9/015; A61L9/04; A61L9/12; A61L9/122; A61L9/16; Y; Y02; Y02A; Y02A50/00; Y02A50/20
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
223 words
A hygienic air purifying device for use in cleaning an air stream contaminated with bacteria, fungi, and/or virus, as well as with other airborne particles, said device comprising: (a) an enclosure having an air inlet at one end and an air outlet at the other end; (b) a fan for creating a path for an air stream through said enclosure; (c) a cartridge mounted in said path and having a plurality of openings therein for allowing passage of the air stream therethrough; (d) a plurality of pellets carried by said cartridge, said pellets being impregnated with a germicidal agent, said germicidal agent being characterized by both an ability to be siphoned into said air stream and neutralize said bacteria, fungi, and/or viruses and an ability to induce an electrical charge on airborne particles entrained in said air stream; said germicidal agent being the primary source of the electrical charge to said airborne particles; (e) collecting means positioned downstream from said pellets, said collecting means having an electrical charge applied thereto, opposite in polarity to that induced on said airborne particles by said germicidal agent, for collecting and removing charged airborne particles from said air stream; whereby bacteria and other germ agents are neutralized by said germicidal agent, and airborne particles are collected from said air stream as it passes through said purifying device.
Claim 2
Dependent Claim
223 words
A hygienic air purifying device for use in cleaning an air stream contaminated with bacteria, fungi, and/or virus, as well as with other airborne particles, said device comprising: (a) an enclosure having an air inlet at one end and an air outlet at the other end; (b) a fan for creating a path for an air stream through said enclosure; (c) a cartridge mounted in said path and having a plurality of openings therein for allowing passage of the air stream therethrough; (d) a plurality of pellets carried by said cartridge, said pellets being impregnated with a germicidal agent, said germicidal agent being characterized by both an ability to be siphoned into said air stream and neutralize said bacteria, fungi, and/or viruses and an ability to induce an electrical charge on airborne particles entrained in said air stream; said germicidal agent being the primary source of the electrical charge to said airborne particles; (e) collecting means positioned downstream from said pellets, said collecting means having an electrical charge applied thereto, opposite in polarity to that induced on said airborne particles by said germicidal agent, for collecting and removing charged airborne particles from said air stream; whereby bacteria and other germ agents are neutralized by said germicidal agent, and airborne particles are collected from said air stream as it passes through said purifying device.
Claim 3
Dependent Claim
15 words
The apparatus according to claim 1 where said germicidal agent is FDA CRMCS No. 1R0013919.
Claim 4
Dependent Claim
32 words
The apparatus according to claim 1 wherein said collecting means comprises a stack of spaced, parallel metallic plates connected to a voltage source through a transformer and separated by a dielectric wafer.
Claim 5
Dependent Claim
27 words
The apparatus according to claim 3 wherein said transformer is of such size as to effect a voltage from the secondary winding of at least 4000 volts.
Claim 6
Dependent Claim
34 words
The apparatus according to claim 4 wherein said fan and the dimension of said enclosure are of such size as to be capable of generating an air flow of 45-50 cubic feet per minute.
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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) | 1987-08-28 | 1988-02-27 | 1988-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-28 | 1992-02-27 | 1992-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-28 | 1996-02-27 | 1996-08-28 | $7700.00 | Window Closed / Lapsed |