Patent US4924092A successfully refreshed from Google Patents.
US4924092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corona generating system
Assignee: Electro Technic Products Co
•
Filing: 1989-03-03
•
Granted: 1990-05-08
•
Expires: 2009-03-03
Abstract
Abstract A system for creating a uniform corona over a volume of free space. A high frequency electrical corona generator is connected to a first electrode having a corona driving element and a corona emitting element, with the corona driving element being greater in size than the corona emitting element such that corona is emitted from the corona emitting element in a direction away from the corona driving element. A second electrode, essentially identical to the first, is spaced from the first with its corona emitting element oriented toward the corona emitting element of the first electrode. A resonator coil is attached to the second electrode, the coil having resonant frequency the same as a resonant frequency of the corona generator and being situated within an electric field generated by the first electrode.
Inventors
- 👤 Buckley Crist, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:16
CPC Classifications
H; H01; H01T; H01T19/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
217 words
a system for creating a uniform corona over a predetermined volume of free space, comprising a. a high frequency electrical corona generator including means for generating resonant frequencies on the order of 2 MHz and above, b. a first electrode attached to said corona generator, said first electrode having a first corona driving element and a first corona emitting element, with the corona driving element being greater in size than the corona emitting element such that corona is emitted from the corona emitting element is a direction away from the corona driving element, c. a second electrode having a second corona driving element and a second corona emitting element, the second corona driving element being greater in size than the second corona emitting element such that corona is emitted from the second corona emitting element in a direction away therefrom, said second electrode being spaced from said first electrode and having said second corona emitting element oriented such that corona emitted from said second electrode is emitted in a direction toward said first electrode, and d. a resonator coil having one end attached to said second electrode, said resonator coil having a resonant frequency the same as a resonant frequency of said corona generator, said coil being located within an electric field generated by said first electrode.
Claim 2
Independent Claim
217 words
a system for creating a uniform corona over a predetermined volume of free space, comprising a. a high frequency electrical corona generator including means for generating resonant frequencies on the order of 2 MHz and above, b. a first electrode attached to said corona generator, said first electrode having a first corona driving element and a first corona emitting element, with the corona driving element being greater in size than the corona emitting element such that corona is emitted from the corona emitting element is a direction away from the corona driving element, c. a second electrode having a second corona driving element and a second corona emitting element, the second corona driving element being greater in size than the second corona emitting element such that corona is emitted from the second corona emitting element in a direction away therefrom, said second electrode being spaced from said first electrode and having said second corona emitting element oriented such that corona emitted from said second electrode is emitted in a direction toward said first electrode, and d. a resonator coil having one end attached to said second electrode, said resonator coil having a resonant frequency the same as a resonant frequency of said corona generator, said coil being located within an electric field generated by said first electrode.
Claim 3
Dependent Claim
19 words
A system according to claim 1 in which a second end of said coil is connected to a ground.
Claim 4
Dependent Claim
20 words
A system according to claim 2 in which said coil and said corona generator are connected to a common ground.
Claim 5
Dependent Claim
18 words
A system according to claim 1 in which said second electrode is essentially identical to said first electrode.
Claim 6
Dependent Claim
28 words
A system according to claim 4 in which each corona driving element comprises a disc and each corona emitting element comprises a ring circumferentially secured to said disc.
Claim 7
Dependent Claim
18 words
A system according to claim 5 in which said ring includes a taper to a corona emitting edge.
Claim 8
Dependent Claim
15 words
A system according to claim 5 in which said disc and said ring are integral.
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) | 1993-05-07 | 1993-11-06 | 1994-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-07 | 1997-11-06 | 1998-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-07 | 2001-11-06 | 2002-05-08 | $7700.00 | Window Closed / Lapsed |