Patent US3843882A successfully refreshed from Google Patents.
US3843882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for electrical discharge treatment of a gas flow
Assignee: Individual
•
Filing: 1973-06-21
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Granted: 1974-10-22
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Expires: 1993-06-21
Abstract
Abstract An apparatus for electrical discharge treatment of a gaseous material wherein at least one gas-discharge slot reactor is electrically coupled to the secondary winding of an A.C.-supply transformer through a series combination of a switching circuit controlled by a control means and a rectifier.
Inventors
- 👤 G Presnetsov
- 👤 A Dmitriev
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:03
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/08; B01J19/087; B01J19/088
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
199 words
An apparatus for electrical discharge treatment of a gas flow comprising: at least one gas-discharge slot reactor which has an inlet and an outlet for a gas flow; at least one pair of electrodes for each gas-discharge slot reactor limiting the gas space thereof; a first electrode of said gas-discharge slot reactor connected to earth; a dielectric disposed between each pair of said electrodes; a second electrode of said gas-discharge reactor separated by said dielectric from said first electrode; a switching circuit for each said reactor, connected with said electrodes of said reactor; a rectifier with an input lead and an output lead converting alternating current to direct current and connected to said switching circuit; a control means connected to said switching circuit and alternately switching during operation of said apparatus said second electrode of said reactor to the leads of said rectifier so as to recharge the capacitances of said dielectric and said gas space of said reactor and excite an electrical discharge within said gas space; a transformer the secondary winding of which is connected to the input of said rectifier; and A.C. source the output of which is connected to the primary winding of said transformer.
Claim 2
Independent Claim
199 words
An apparatus for electrical discharge treatment of a gas flow comprising: at least one gas-discharge slot reactor which has an inlet and an outlet for a gas flow; at least one pair of electrodes for each gas-discharge slot reactor limiting the gas space thereof; a first electrode of said gas-discharge slot reactor connected to earth; a dielectric disposed between each pair of said electrodes; a second electrode of said gas-discharge reactor separated by said dielectric from said first electrode; a switching circuit for each said reactor, connected with said electrodes of said reactor; a rectifier with an input lead and an output lead converting alternating current to direct current and connected to said switching circuit; a control means connected to said switching circuit and alternately switching during operation of said apparatus said second electrode of said reactor to the leads of said rectifier so as to recharge the capacitances of said dielectric and said gas space of said reactor and excite an electrical discharge within said gas space; a transformer the secondary winding of which is connected to the input of said rectifier; and A.C. source the output of which is connected to the primary winding of said transformer.
Claim 3
Dependent Claim
90 words
An apparatus as claimed in claim 1 Wherein said switching circuit comprises: a switching element which is connected to said control means and couples the first lead of said rectifier with said second electrode of said reactor; a reactive element which connects the second lead of said rectifier with said second electrode of said reactor, the electrical characteristics of all of said elements being selected such that the charge time constant of said reactor capacitances is at least three times as long as the discharge time constant of said capacitances.
Claim 4
Dependent Claim
37 words
An apparatus as claimed in claim 2 wherein a switching circuit comprises a second reactive element connected between said first lead of said rectifier and said second electrode of said reactor in series with said switching element.
Claim 5
Dependent Claim
33 words
An apparatus as claimed in claim 2 wherein a switching element is connected between said second lead of said rectifier and said second electrode of said reactor in series with said reactive element.
Claim 6
Dependent Claim
34 words
An apparatus as claimed in claim 3 wherein a switching element is connected between said second lead of said rectifier and said second electrode of said reactor in series with said first reactive element.
Claim 7
Dependent Claim
64 words
An apparatus as claimed in claim 1 wherein the switching circuit comprises a first switching element which is connected to said control means and couples said first lead of said rectifier to said second electrode of said reactor; a second switching element which is connected to said control means and couples said second lead of said rectifier to said second electrode of said reactor.
Claim 8
Dependent Claim
24 words
An apparatus as claimed in claim 6 wherein said switching elements are coupled to said second electrode of said reactor through a reactive element.
Claim 9
Dependent Claim
34 words
An apparatus as claimed in claim 6 wherein a reactive element is connected between each of said leads of said rectifier and said second electrode of said reactor in series with said switching element.
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) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |