Patent US3654534A successfully refreshed from Google Patents.
US3654534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air neutralization
Assignee: Individual
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Filing: 1971-02-09
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Granted: 1972-04-04
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Expires: 1991-02-09
Abstract
Abstract A gas such as common air may be treated so as to be electrically ''''neutralized'''' by passing the gas through the space between charged electrodes. These electrodes are changed by an AC current having a sinusiodal wave form which creates a field having an intensity in the space of at least 8 microamps per square inch. The gas being treated is passed through this space at a rate such that the gas is between the electrodes during a complete cycle of the AC current or during an even multiple of such a complete cycle. As the gas passes through the electrodes, various charges carried by or within the gas are removed from it.
Inventors
- 👤 Ronald S Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:43
CPC Classifications
A; A61; A61L; A61L9/00; A61L9/16; A61L9/22
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
103 words
An apparatus for treating a gas so as to neutralize electric charges, which apparatus comprises: treatment means including electrodes separated by a dielectric and an air space, means for applying an AC current at a power level sufficient to create a field between said electrodes in said air space having an intensity of at least 8 microamps per square inch, and means for moving a gas through said air space at a rate such that the gas is moved between said electrodes so as to be subjected to said field for a complete cycle of said AC current or an even multiple thereof.
Claim 2
Independent Claim
103 words
An apparatus for treating a gas so as to neutralize electric charges, which apparatus comprises: treatment means including electrodes separated by a dielectric and an air space, means for applying an AC current at a power level sufficient to create a field between said electrodes in said air space having an intensity of at least 8 microamps per square inch, and means for moving a gas through said air space at a rate such that the gas is moved between said electrodes so as to be subjected to said field for a complete cycle of said AC current or an even multiple thereof.
Claim 3
Dependent Claim
100 words
An apparatus as claimed in claim 1 wherein: said air space is from one thirty-second to three-sixteenths inch thick, said AC current has a sinusiodal wave form of less than 5 percent total harmonic, the frequency of said AC current is from about 30 to 90 cycles per second, the intensity of said field is from about 8 to about 12 microamps per square inch, the dielectric constant of said dielectric is at least 5, said dielectric being an isotropic material, and said current creates a voltage gradient across said air space of from 80 to 100 volts per mil.
Claim 4
Dependent Claim
87 words
An apparatus as claimed in claim 1 wherein: said air space is about one-sixteenth inch thick, said AC current has a sinusiodal wave form of less than 5 percent total harmonic content, said AC current is a 60 cycles per second current, the intensity of said field is about 10 microamps per square inch, the dielectric constant of said dielectric is at least 5, said dielectric is an isotropic material, and said current creates a voltage gradient across said air space of about 95 volts per mil.
Claim 5
Dependent Claim
97 words
A process for treating a gas so as to neutralize electric charges which comprises: passing a gas to Be treated through an air space between two electrodes separated by a dielectric and said air space while applying an AC current to said electrodes so as to create a field within said air space having an intensity of at least 8 microamps per square inch, said gas being passed through said space at a rate such that said gas is between said electrodes within said field during a complete cycle of said current or an even multiple thereof.
Claim 6
Dependent Claim
97 words
A process for treating a gas so as to neutralize electric charges which comprises: passing a gas to Be treated through an air space between two electrodes separated by a dielectric and said air space while applying an AC current to said electrodes so as to create a field within said air space having an intensity of at least 8 microamps per square inch, said gas being passed through said space at a rate such that said gas is between said electrodes within said field during a complete cycle of said current or an even multiple thereof.
Claim 7
Dependent Claim
87 words
A process as claimed in claim 4 wherein: said air space is from one-thirty-second to three-sixteenths inch thick, said AC current has the sinusiodal wave form of less than 5 percent total harmonic, the frequency of said AC current is from about 30 to 90 cycles per second, the intensity of said field is from about 8 to 12 microamps per square inch, said dielectric is an isotropic material, said current creates a voltage gradient across said air space of from 80 to 100 volts per mil.
Claim 8
Dependent Claim
87 words
A process as claimed in claim 4 wherein: said air space is about one-sixteenth inch thick, said AC current has a sinusiodal wave form of less than 5 percent total harmonic content, said AC current is a 60 cycles per second current, the intensity of said field is about 10 microamps per square inch, the dielectric constant of said dielectric is at least 5, said dielectric is an isotropic material, and said current creates a voltage gradient across said air space of about 95 volts per mil.
References Cited (Backward Citations)
US1388112A
Cited
US1934704A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-04 | 1975-10-04 | 1976-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-04 | 1979-10-04 | 1980-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-04 | 1983-10-04 | 1984-04-04 | $7700.00 | Window Closed / Lapsed |